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Sunday, January 24, 2010

Smart Money Asset Allocation Review

Recent market volatility marked the first serious drop since November last year. It is timely to review how smart investors have prepared and reacted to such a change. The following analysis is based on ValidFi's real time asset allocation analysis tool for mutual funds.

First, let's take a look at several best performing moderate asset allocation funds in the last 3 years.

The following are beta (asset exposure) changes of the stock market (using Vanguard Total Stock Market Index VTSMX as the proxy) for moderate allocation funds Janus Balance (JABAX), FPA Crescent (FPACX), Waddell & Reed Asset Strategy (WYASX) and Ivy Asset Strategy (WASYX). Notice also the beta reduction does not mean the manager actually makes a physical asset reduction in his portfolio. It could mean that his portfolio has been positioned defensively (such as more heavily in defensive sectors such as consumer staples). Same is true for beta increase also.

jabax_1202010

fpacx_01202010

wyasx_01202010

wasyx_01202010

Taking into account S&P 500 index (SPY)'s 2% year to date drop, one could see that all of these funds have reduced their exposure to equity somewhat. Notice further that other than FPACX, the other three funds reduced their exposure right at the beginning of year. Such a move apparently reveals the year end asset rebalancing. It seems to be very prudent and timely to make such reductions (or a rebalancing act). Also, notice both Waddell & Reed and Ivy made drastic reductions on days 1/14 and 1/15.
On the other hand, if we look at funds with under exposure going to the new year, such as Vanguard Wellesley Income (VWINX) and GMO Benchmark-Free Allocation (GBMFX), these funds actually increased their equity exposures during this correction period:

vwinx_01202010

gbmfx_01202010

Currently, ValidFi's Guru Asset Allocation Clone with Diversified Bonds portfolio has the following asset mix: 25% short term bond allocation (SHY and CSJ), 7.41% high yield bond (HYG or JNK) and the rest is in stocks (SPY, EFA, EEM), REIT (IYR or ICF) and gold GLD.

holdingpiechart_P_Guru_Asset_Allocation_Clone_with_Diversified_Bonds

All in all, from the above, we could infer that smart money managers do not expect a drastic stock market melt down (at least at this moment) while they are making timely move to adjust their asset exposure to the right mix. One should definitely reduce equity exposure if he/she has over exposure to this asset. On the other hand, for those whose equity exposure has been under the target allocation,  it might be prudent to gradually increase the allocation.

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Sunday, November 29, 2009

A Well Balanced Wealth Management Investment Strategy

Inflation and deflation are the two most important factors for a well designed wealth management investment strategy. Inflation destroys the long term purchasing power while deflation reduces the effectiveness of the capitalism's basic profit machine. A well designed long term strategy thus needs to have a well balanced hedge in both economic cycles. Harry Browne's permanent portfolio is designed over various major asset classes to tackle this problem. A more actively managed strategy is Doug Roberts' Follow the Fed Strategy. In this article, we will discuss this well balanced strategy ValidFi maintains in some detail.

This strategy is simply based on the fed monetary policy to follow the Fed. Research shows that big caps behave better than small caps when money is tight while small caps outperform big caps when money is easy. Similar relationship is also found in gold and Treasury bonds. Gold is doing better than Treasury bonds when the Fed's money policy is easy, and vice versa. Switching between large and small stocks, gold and Treasury bonds depends on the Fed's monetary policy.

To lower the risk still further, simple intermediate government notes are added to the portfolio. Thus this strategy allocates assets equally among large/small stocks, gold/Treasury bonds and intermediate government notes.

1. Determine whether money is tight or easy
  • The indicator we use is T-bill -12 month  value minus Inflation - 12 month value, as described in the Barrons' articles. If the former is larger than the latter, then Fed's money policy is tight.
  • The T-bill - 12m is the trailing 12 - month compound return using the last twelve monthly T - bill's values.
  • Similarly the Inflation -12m measures the trailing 12-month compound return using the last 12- month inflation values. Inflation is calculated as the change in CPI index between this month and last month divided by last month's CPI index.
  • We can also compare the above indicator value with the 64-day simple moving average value of the indicator. If the former is larger than the latter, then the Fed's tight, and vice versa.
2. Portfolios
A conservative model portfolio would be simply allocating 1/3 each to large/small cap equity,  gold/long term treasury and intermediate treasury notes.
  • If money is tight, the portfolio is composed of:

    • 33.33% in large stocks
    • 33.33% in Treasury bonds
    • 33.33% in intermediate treasury notes


  • If money is easy, the portfolio is made up of:

    • 33.33% in small stocks
    • 33.33% in gold
    • 33.33% in intermediate treasury notes

3.  Switching frequency
The strategy adjusts portfolios every month according to the money status.
  • If short-term T-bill rate remains higher/lower than inflation, no adjustment is made to the portfolio because money remains tight/easy.
  • Similarly, if the indicator value stays above/below 0, or it's higher/lower than the 64-day simple moving average value of the indicator, no adjustment needs to be done to the portfolio.
  • However, if the money status changes, for example, money is tight right now while it was easy last time, investors must adjust the portfolio accordingly. In this case, portfolios should be switched to the other type so that investors can achieve higher returns while remaining lower risks.
We have found that using the 64-day simple moving average performs much better than  simply basing on whether the indicator's value is positive or negative.

The following table compares the performance between the conservative portfolio and the permanent portfolio (PRPFX) from 1/1/1997 to 11/27/2009.


Last 1 Years
Last 3 Years
Last 5 Years
Since 1/1/97 to 11/27/09
Roberts Portfolio Annualized Return
22.3%
7.4%
9.4%
9.9%
PRPFX Annualized Return
28.7%
7.3%
8.5%
8.46%
Roberts Portfolio Sharpe Ratio
1.7
0.5
0.68
0.77
PRPFX Sharpe Ratio
1.66
0.41
0.54
0.65

Doug Roberts' strategy is one of those well balanced long term strategies adopted by wealth managers to preserve capital and purchasing power while achieving reasonable growth. At the moment, the strategy decides that "money is easy" (which is obviously true) and invests in both small cap and gold.

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Sunday, November 22, 2009

Low Risk yet Reasonable Return Strategies Using Long Term Stock Market Timing Indicators

What? Are you Madoff? These days, anything related to 'low risk' or 'steady' returns generates skepticism. It is very understandable and perfectly reasonable for investors to have such a feeling, given what have happened in the financial industries.

However, if an investor does follow sound and safe investment principles consistently and disciplinarily, yes, Virginia, there is a hope! In the following, we will show how one could achieve a 10% return in the past 9 years by simply incorporating Buffett or Shiller long term stock market timing indicators in your investing.
The idea is simply that, when the stock market is significantly undervalued, one should fully invest in the stock market; when the stock market is significantly overvalued, one should sell the stocks and fully invest in bonds using some fixed income strategies. The proxy to invest in stock market is Wilshire 500 total return index while the strategies for fixed income investment are Alpha Dynamics for Multi Sector Bonds. This strategy evaluates 32 multi-sector bond mutual funds every quarter based on their trailing one year's Alphas and then select top 3 three funds for next quarter investment. The quarterly rebalancing frequency allows investors to avoid the short term redemption fee charged by brokerages or fund companies. It switches to Cash (13 week treasury bill) when none of the funds has positive 1 year alpha.

The following table illustrates the performances for the two portfolios from 12/31/2000 to 11/20/2009.


Annualized Return
Standard Deviation
Maximum Drawdown
Buffett Indicator based Bond as Cash
12.73%
1.21
11%
Shiller Indicator based Bond As Cash
10.38%
11.1%
20%
Wilshire 5000 Total Return
-0.58%
22.2%
56.6%

A portfolio with much longer history (from 12/31/1990 to 11/20/2009) using Shiller's metric and alpha based high yield bond fund quarterly switch strategy shows a similar result (9.75% annualized return).

The above are just some of examples to show that if one is patient enough and avoids the hype in a long term period, he/she will be rewarded with  low risk reasonable returns.

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Sunday, November 15, 2009

John Hussman's Peak PE Ratio as a Long Term Stock Market Indicator

John Hussman, manager of Hussman Strategy Growth Fund (HSGFX) proposed price to peak 10 year average earnings as a long term stock market valuation gauge. Compared with the normal one year price to earning ratio, Price to Peak Earnings would eliminate short term noise. This is similar to Shiller's Cyclically Adjusted Price Earning ratio (CAPE10) and Warren Buffett's stock market GNP/GDP metric. In his weekly commentary on Dec 5, 2005, titled as 'Earnings Revert to the Mean, Stocks Will Struggle', he proposed a simplistic method: "buy when Price to Peak Earnings is lower than 15 and sell when it exceeds 19.5". John Hussman has been using this as the valuation yardstick to manage the Hussman Strategic Growth Fund HSGFX.
It is interesting to examine how effective using such a metric as a long term stock market timing indicator. Similar to the Warren Buffett's stock market GNP/GDP metric and Shiller's CAPE, the following strategy characterizes the stock market valuation into the following five categories based on the ratio of the current Peak PEs to the long term average Peak PEs:
  • Significantly Overvalued (SO): such as if the ratio >= 150%
  • Modestly Overvalued (MO): such as if   117% <=  ratio < 150%
  • Fairly Valued (FV): such as if 83% <= ratio < 117%
  • Modestly Undervalued (MU): such as if 67% <= ratio < 83%
  • Significantly Undervalued (SU): such as if ratio < 67%
These five categories are determined by four valuation parameters (such as 150%, 117%, 83% and 67% in the above). At each rebalancing (adjusting) period (such as weekly or monthly), the strategy decides at what region the US stock market valuation is and then does the following rebalancing:
  • SO: 0% in stock, 100% in cash.
  • MO: 25% in stock, 75% in cash.
  • FV: 50% in stock, 50% in cash
  • MU: 75% in stock, 25% in cash
  • SU: 100% in stock, 0% in cash
The stock market exposure is through buying Wilshire 5000 total return index (^DWC) or it could be set by users. Users could adjust the valuation parameters to get an effect like only buying at significantly undervalued (SU) level and selling at significantly overvalued (SO) level. Some of model portfolios of this strategy are:
  • SO: >=150%, MO: [117%, 150%), FV: [83%, 117%), MU: [67%, 83%), SU: <67%
  • SO: >=150%, MO, FV, MU: [67%, 150%), SU: <67%
A model portfolio called P Hussman Peak PE Market Timing Strategy Buy 15 Sell 19.5 Weekly is also maintained to live monitor the strategy suggested in 'Earnings Revert to the Mean, Stocks Will Struggle'.
The following table compares the performance of the three long term stock market indicators. All of the portfolios are based on 'buy at significantly undervalued and sell at significantly overvalued' strategy.


12/31/1970 to 11/13/2009
Buffet GNP Metric Annualized Return
9.74%
Shiller CAPE10 Annualized Return
6.9%
Hussman Peak PE Annualized Return
8.02%
Wiilshire 5000 Total Return Annualized Return
6.9%
Buffet GNP Metric Sharpe Ratio
0.53
Shiller CAPE10 Sharpe Ratio
0.25
Hussman Peak PE Sharpe Ratio
0.33
Wilshire 5000 Total Return Sharpe Ratio
0.15

All of the strategies have achieved better returns and much higher Sharpe ratios compared with Wilshire 5000 total return index.

On Friday 11/13/2009, Both Buffett and Hussman metrics indicated the market was fairly valued: Buffet Total Stock Market Valuation to GNP ratio was 78.6% while Hussman's Peak PE10 to the long term Peak PE10 average was 1.04 (current peak PE 10 was 12.4 and the long term average was 11.9). Shiller CAPE10 to its long term average indicates the market was 22% overvalued.  It should be noted that John Hussman has been very cautious recently, pointing out the uniqueness of the current economic situation. Interested readers should read his latest weekly commentary here.

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Sunday, October 25, 2009

Robert Shiller's Cyclically Adjusted Price Earning Ratio as a Long Term Timing Indicator

 (Correction: this article is corrected version from the previous one published on 10/23/2009. In the previous artilce, we used nominal PE10 instead of real PE 10, that resulted in higher PE10 ratio, which is incorrect).
Yale Professor Robert Shiller has devised and maintained a so called "Cyclically Adjusted Price Earning Ratio" (CAPE10) as an alternative to the popular PE ratio to value the US stock market. CAPE10 is defined as the ratio of price to the average of last 10 year trailing S&P 500 annual earnings. In his now famous book titled as "Irrational Exuberance", Shiller popularized this ratio as a long term stock market valuation metric.  As it stands on last Friday October 30, 2009, the current CAPE10 is 18.88 while the long term average CAPE10 (since year 1881) is 16.38. This implies that the current US stock market is 16% over valued.

It is interesting to examine how effective using such a metric as a long term stock market timing indicator. Similar to the Warren Buffett's stock market metric, ValidFi implements and maintains a live strategy called Shiller Cyclically Adjusted PE 10 Stock Market Timing Strategy. One of its model portfolios buys stocks only when this ratio is deemed to be significantly under valued (the current CAPE10 is 33% lower than the long term CAPE10 average) and goes into cash when such as ratio signals significant over valued (if the current CAPE10 is 50% higher than its long term average). The stock market exposure is through buying Wilshire 5000 total return index (^DWC).

From 12/31/1970 to 11/2/2009, the weekly adjusted portfolio achieves 6.8% annualized return and standard deviation 11.9% compared with Wilshire 5000 total return's annualized return 6.77% and standard deviation 19.5%.  Such a portfolio was in cash from 5/12/1995 all the way to 2/20/2009! See the following chart:





It is hard to believe that an average investor would have such patience to stay out of the stock market for such a long time, especially during the bull markets. However, a prudent investor would utilize such an indicator to carefully manage the risk during over valued periods.

Some readers might ask that since Shiller's indicator is a long term indicator, what strategies one could use during the long time periods when it is out of stock market. We will have follow up articles on how to combine such a long term indicator and some safe strategies to achieve safe and more reasonable returns.

Interested readers could find the up to date information of both Shiller and Buffett indicators on ValidFi's 360 Degree Market View page.

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Monday, October 5, 2009

PIMCO's Global Multi-Asset Fund PGMAX Reduced Equity Exposure Recently

Recent Barron's article: seeking safe returns in a perilous world revealed PIMCO's  newly introduced global multi-asset fund PGMAX and their asset allocation guidelines: based on risk factor allocation instead of traditional asset pigeonholes.

It is interesting to see that ValidFi's Realtime Asset Allocation tool revealed that PGMAX recently reduced its equity exposure (click to enlarge the chart): 


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Gurus' Asset Allocation in the Recent Market Whipsaw

Entering October, one saw the markets trembled a little bit. It's time to review several well known asset allocators' positions.
Top performing asset allocation fund Leuthold Core Investment LCORX (19.4% YTD return up to 10/2/2009) made a noticeable reduction in its equity exposure: from almost 100%  to 71%. That is quite significant, even if one takes the recent market drop into consideration. See the following chart:

LCORX_10022009

The other top performing fund Janus Balanced (JABAX) (17.1% YTD return up to 10/2/2009) has been steady after some equity reduction at the end of September: its equity exposure has been around 50%. See the following chart:

JABAX_10022009

Waddell & Reed Asset Strategy Y (WYASX) (17% YTD return up to 10/2/2009) has increased its international equity exposure significantly since early September:

WYASX_10022009

The above is derived from ValidFi's innovative Realtime Asset Allocation (RAA) analysis tool. The actual percentage of allocation might not be that accurate. However, the tool is doing a reasonable job to identify the allocation trend and its change. For the equity exposures mentioned above, we would like to clarify that they represent an estimated Beta correlation with the equity index (represented by Vanguard Total Stock Market Index VTSMX). It does not represent the actual asset allocation but instead  represents how close the asset (equity) portion is related to the stock market index VTSMX. For example, a fund could have a 100% Beta on the equity portion but its actual equity allocation is 70%, that would mean that this fund's equity portion's beta is 1.4  (100%/70%).

The takeaway from the above is that we are in a period of uncertainty. In such a period, it is crucial to be consistent with strategies you are using and position your portfolio accordingly.

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Tuesday, September 29, 2009

Time to Rebalance Your Portfolios

Portfolio rebalancing is perhaps the only 'free' lunch once you have set a strategic portfolio allocation based on your risk profile. Numerous articles have been published to study the pros and cons of portfolio rebalancing. The key factors behind portfolio rebalancing are:
  • Risk and return control: when certain assets have appreciated too much, you would like to "take some money off the table" by selling portions of assets to bring back to your preset allocation targets. When certain assets have gone down too much, you would like to "buy cheap" so that you could take the "on sale" opportunity.
  • Psychological feeling: when your portfolio allocation is out of balance, the over weight or under weight will give you uneasy feeling. Such a feeling is best described as the urge to do something in behavioral finance. Investors so often want to do something about their investment and most of time, they venture into markets without a clear guideline on their portfolio allocation. By the time they realize, their portfolio is out of whack and very often, they also lose money. Portfolio rebalancing with target allocations fixed is a sensible safe guideline to curb such "random" behavior.
As stock and other assets have appreciated so much recently (see the following table), the uneasy feeling on a looming correction is on everyone's mind. Now that we are approaching the end of third quarter,  it is time to have a checkup on your portfolios. 
Major Asset Performance
as of 9/25/2009, sorted by 13 weeks performance

Description
Symbol
1 Week
4 Weeks
13 Weeks
26 Weeks
52 Weeks
US Equity REITs
VNQ
-5.38%
3.39%
33.72%
71.82%
-29.51%
International REITs
RWX
-3.54%
3.64%
22.04%
58.26%
-11.72%
Emerging Market Stks
VWO
-1.94%
6.28%
18.57%
56.09%
10.61%
International Developed Stks
EFA
-2.43%
2.22%
18.04%
45.45%
-6.10%
Frontier Market Stks
FRN
-1.31%
5.61%
17.89%
60.39%
-5.25%
US Stocks
VTI
-2.40%
1.79%
15.16%
30.68%
-11.42%
US High Yield Bonds
JNK
0.84%
5.94%
13.83%
38.80%
10.95%
Emerging Mkt Bonds
PCY
0.04%
3.72%
13.43%
26.74%
22.77%
International Treasury Bonds
BWX
0.05%
2.95%
6.49%
13.47%
10.91%
Municipal Bonds
MUB
0.47%
2.58%
5.93%
7.20%
10.80%
US Credit Bonds
CFT
1.06%
1.62%
5.54%
15.49%
16.50%
Gold
GLD
-1.69%
3.33%
5.10%
6.96%
11.96%
Total US Bonds
BND
0.46%
0.81%
2.29%
4.33%
7.13%
Intermediate Treasuries
IEF
1.10%
0.93%
1.89%
-2.87%
6.96%
Mortgage Back Bonds
MBB
0.31%
0.62%
1.57%
2.06%
7.93%
Treasury Bills
SHV
-0.02%
-0.01%
-0.03%
0.07%
0.60%
Commodities
GSG
-2.24%
-5.34%
-2.92%
12.76%
-47.54%
The most popular rebalancing method is to periodically rebalance monthly, quarterly or annually rebalancing. For people who would like to be more active, opportunistic rebalancing strategy proposed by Gobind Daryanani from TD Ameritrade Institutional has shown to be effective if proper parameters are chosen. The opportunistic rebalancing method examines a portfolio periodically (such as biweekly). For those assets whose allocations are out of certain preset threshold (such as 20% more or less than the target percentage), these assets are rebalanced back to their target allocation percentages. For example, an asset with 30% target allocation would be rebalanced back to its 30% target if its allocation is over 36% or under 24%.  The following table compares the performances of three methods: no rebalancing, annual rebalancing, quarter rebalancing and opportunistic rebalancing (monthly check and 20% band) on a Roger Gibson Five Asset Portfolio.

Annualized  Return
Last 5 Years
Last 3 Years
Last 1 Year
Since 12/31/1997
Opportunistic Rebalancing Monthly 20% Band
3.39%
-3.35%
-15.67%
5.61%
Roger Gibson Annual Rebalancing
2.37%
-4.4%
-17.6%
5.41%
Roger Gibson Quarterly Rebalancing
3.09%
-3.7%
-16.15%
5.31%
Roger Gibson Monthly Rebalancing
2.35%
-4.65%
-17.84%
4.92%
Roger Gibson No Rebalancing
1.69%
-5.85%
-18.77%
4.17%
It should be noted that there are various parameters to be set for the opportunistic rebalancing method. Some of them are not as good as even a periodical rebalancing. However, rebalancing in some way definitely helps to improve your portfolio performance. Interested readers could further compare the risk (standard deviation and maximum drawdown) for these portfolios (and their various settings) from here.
It is also interesting to apply timing techniques to portfolio rebalancing.  In our previous article we showed that applying timing to a diversified portfolio could reduce risk and enhance return. Using this in a portfolio rebalancing manner deserves a separate serious study.

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Saturday, September 19, 2009

Buffett Stock Market Indicator: Simple Yet Effective

In his 2001 Fortune magazine article, Warren Buffett used the ratio of the market value of all US publically traded securities to Gross National Product (GNP) as a yardstick to measure the stock market valuation. He stated that  

"The ratio has certain limitations in telling you what you need to know. Still, it is probably the best single measure of where valuations stand at any given moment".

He further went on to say

"If the percentage relationship falls to the 70% or 80% area, buying stocks is likely to work very well for you. If the ratio approaches 200%--as it did in 1999 and a part of 2000--you are playing with fire".

Such a simple yet elegant metric (we call it Buffett Stock Market Indicator) could be implemented in several ways. At the moment, ValidFi maintains a strategy called Warren Buffett Total Stock Market Value to GNP Ratio Strategy. This strategy characterizes the stock market valuation into the following five categories: 

  • Significantly Overvalued (SO): such as if the ratio >= 115%.
  • Modestly Overvalued (MO): such as if   90% <=  ratio < 115%.
  • Fairly Valued (FV): such as if 75% <= ratio < 90%.
  • Modestly Undervalued (MU): such as if 50% <= ratio < 75%.
  • Significantly Undervalued (SU): such as if ratio < 50%

These five categories are determined by four valuation parameters (such as 115%, 90%, 75% and 50% in the above). At each rebalancing (adjusting) period (such as weekly or monthly), the strategy decides at what category the US stock market valuation is and then does the following rebalancing:

  • SO: 0% in stock, 100% in cash.
  • MO: 25% in stock, 75% in cash.
  • FV: 50% in stock, 50% in cash.
  • MU: 75% in stock, 25% in cash.
  • SU: 100% in stock, 0% in cash.

The stock market exposure is through buying Wilshire 5000 total return index (^DWC) or it could be set by users. Users could adjust the valuation parameters to get an effect such as only buying at significantly undervalued (SU) level and selling at significantly overvalued (SO) level. Some of model portfolios of this strategy are:

  • SO: >=115%, MO: [90%, 115%), FV: [75%, 90%), MU: [50%, 75%), SU: <50%.
  • SO: >=115%, MO, FV, MU: [50%, 115%), SU: <50%.

The total US stock market valuation is based on Wilshire 5000 index while the GNP is based on Federal Reserve's quarterly released number. From 12/31/1980 to 9/18/2009, the weekly adjusted portfolio achieves 8.648% annualized return and standard deviation 12.2% compared with Wilshire 5000 total return's annualized return 7.4% and standard deviation 17.5%.

It is even more amazing if an investor opted to invest only when the market was significantly undervalued and went to cash when the market became significantly overvalued. Such a strategy would keep an investor in cash from 2/27/1998 to 3/6/2009: avoiding the last two bubbles altogether!  The following figure shows the transactions:

image

Such a portfolio achieves annualized return 9.71% with standard deviation 11.4% from 12/31/1980 to 9/18/2009. There are only 3 transactions during this whole 29+ year period.

On last Friday (9/18/2009), the Buffett Indicator stood at 77.5%,  valuing the US stock market as Fairly Valued if one uses the 5 categories above.

Along with Buffett Indicator, ValidFi recently introduced various financial, economic and sentiment indicators. Interested readers could find up to date information of these indicators on ValidFi's 360 Degree Market View page.

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Wednesday, September 16, 2009

Market Timing Strategies Based on Financial and Sentiment Indicators

Market timing strategies have been controversial: academics published many studies in this subject and most of them concluded that it is useless to pursue market timing. On the other hand, practitioners have been using this for many years (explicitly or implicitly). In a paper published by Neuhier and Schlusche in Feb. 2009, titled as Data Snooping and Market-Timing Rule Performance, the study examined stock market timing strategies based on various combinations of financial and sentiment indicators. The paper's conclusion is mostly negative on those strategies based on historical simulation during the period from 1981 to 2007. With the recent market upheavals, it is interesting to revisit these strategies by including the period since 2007 to now.

The basic idea behind these strategies is to remain invested in the stock market when expected returns are high and switch to cash investments when the market is expected to underperform. Investors long securities but temporarily exit the market and switch to holding cash in bad times based on certain timing indicators. By avoiding exposure to stock market during the weakest months and being long during the rest of the time, one would hope to reduce risk and achieve a reasonable return. The key to measure the performance of these strategies should include the risk factors such as maximum drawdown (measured as the maximum from a peak to a following trough percentage), standard deviation and Sharpe ratio (the so called risk adjusted return).

ValidFi recently released various stock market timing strategies based on the description from the paper. These strategies and their model portfolios are now lively monitored on validfi.com. These strategies employ the following indicators:
  • Financial indicators
    • Earning to price: essentially this is the S&P 500 PE ratio.
    • Dividend yield: this indicator is tracking S&P 500 companies' aggregate dividend yields in the past 12 months.
    • Dividend payout ratio: S&P 500 dividend payout ratio.
    • Bond to equity: the relative bond yield and earning yield relationship. The so called Fed model is one version of this.
  • Interest rate indicators
    • Long term interest rate: based on long term Treasury bond yield. This indicator is sensitive to long term inflation expectation.
    • Short term interest rate: based on short term Treasury bill yield.
    • Maturity spread: the difference between long term and short term bond yields.
    • Credit spread: the difference between high yield (junk) bond and the investment grade corporate bond yield. The bigger the spread, the higher investors' risk appetite is.
    • Expected inflation: difference between nominal and real interest rate.
  • Sentiment indicators
    • CBOE equity put/call ratio: the short term total equity put volume over the short term total equity call volume.
    • CBOE S&P 500 implied volatility VIX: the implied volatility of short term option contracts on S&P 500 index. This indicator is also called 'fear factor'.
In these strategies, several threshold values of the indicators are considered. They are either a historical value, such as the moving average or a certain percentile or a fixed number. Other parameters include delay days (number of days waited to take an equity position after a switching signal) and waiting days (minimum number of days to keep a position after switching).  The model portfolios have various parameter settings. In general, we find using SMA30 or SMA120 (30 or 120 days Simple Moving Average) are the most natural ways to set the parameters even though they might not be the best parameters.

The following table illustrates the performance of these strategies with the best parameter settings. From the table, one could see that financial indicator long term interest rate, interest rate indicator credit spread and the sentiment indicator put/call ratio have the best Sharpe ratios in the period monitored. The long term interest rate, being sensitive to the economic condition, surprisingly has an excellent predictive effect since 1963. On the other hand, the expected inflation based strategy has quite a bit under performance. We believe it might be due to the inaccurate estimate methodology used.
Table 1: The Best Performance Portfolio of Each Market Timing Strategy
(From start date to 9/9/2009)
Timing on S&P 500 Index
Timing
Timing
Buy and Hold S&P 500 Index (dividend is not reinvested)
Buy and Hold
Buy and Hold
Indicator
Parameters
AR
Sharpe
Start Date
AR
Sharpe
Long Term Interest Rate
SMA30, 5, 5
9.58%
0.481
4/1/1987
5.78%
0.148
Short Term Interest Rate
SMA30,1,1
4.82%
0.081
1/1/1963
6.16%
0.142
Maturity Spread
SMA30, 5, 5
3.37%
-0.041
1/1/1963
6.16%
0.142
Earning to Price
SMA30, 1, 1
6.27%
0.271
1/1/1990
5.60%
0.158
Dividend Yield
SMA30, 1, 1
3.26%
0.053
1/1/1990
5.60%
0.158
Bond to Equity
SMA30, 1, 1
6.54%
0.253
1/1/1990
5.60%
0.158
Dividend Payout Ratio
SMA120, 5, 5
6.57%
0.307
1/1/1990
5.60%
0.158
Credit Spread
SMA30, 1, 1
8.53%
0.404
1/1/1997
2.66%
0.019
VIX
SMA30, 5, 5
4.17%
0.137
1/1/1991
6.29%
0.201
Expected Inflation
SMA30, 1, 1
1.72%
0.004
1/1/2003
2.44%
0.035
Put/Call Ratio
SMA30, 5, 5
7.54%
0.377
1/1/2004
-1.28%
-0.137
Learning
256, 256
5.85%
0.237
1/1/1990
5.60%
0.158
Voting
0.6, 1 month
4.22%
0.107
1/1/1990
5.60%
0.158

In addition to the live strategies mentioned above, ValidFi also maintains a 360 degree market view page to monitor various indicators and most asset classes trends.

This article only serves as an introduction to the above strategies. We will have more follow up articles to discuss individual strategies in more detail.

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Tuesday, September 8, 2009

Recent Gurus' Asset Allocations

With summer fading away, we now suddenly find ourselves in September, one of the worst months for the stock market. It is thus a good time to check up your portfolio and make necessary adjustments if it is necessary.

In the previous article, we introduced ValidFi's Guru Asset Allocation Watch and strategies. The Guru Asset Allocation Clone strategy applies ValidFi's proprietary algorithm to detect a mutual fund's asset exposure and utilizes the derived information to make necessary asset allocation decision for each month. The risk adjusted performance of the strategy is fairly impressive for the past ten years. Readers could examine one of its model portfolios for more information.

The portfolio recently made a noticeable asset allocation change on August 31st. 2009. The following table compares its August and September allocations (notice that the funds used to represent the asset classes could be replaced by ETFs such as SPY, EFA, IYR, TIP, CIU or CFT, BWX, EEM, HYG or JNK and BND or AGG).

Asset August Allocation September Allocation
VBMFX 0.00% 0.00%
VFISX 20.47% 0.00%
VWEHX 0.56% 2.31%
VEIEX 3.50% 5.08%
TGBAX 10.25% 0.00%
VFICX 15.09% 46.52%
VIPSX 10.80% 27.98%
VGSIX 0.03% 0.06%
GLD 0.00% 0.00%
VGTSX 2.96% 1.96%
VFINX 36.34% 16.08%
Stock Exposure 42.83% 23.18%

From the above table, the most noticeable changes are:
  • Total stock exposure: reduced from 42.83% to 23.18%
  • Fixed income allocation: big increase to Investment Grade Corporate Bond (VFICX) and Inflation Protected Treasury Bond (VIPSX)
The September allocation is very defensive.

Let us further examine the recent allocation moves for several top performing allocation funds.
The following picture illustrates Vanguard Wellesley Income Fund (VWINX). We could see the fund made noticeable reduction in equity exposure during August.

VWINX_AA_092009

The other top allocation fund, GMO Benchmark-Free Allocation GBMFX has the following allocation trend:

GBMFX_092009

Again, the fund made equity reduction during the August time frame.

Readers are encouraged to take advantage of the ValidFi's Real Time Asset Allocation tool to find out asset allocation trends of your favorite funds. It is free but requires a registration during its Beta testing period.
To summarize, several great asset allocation investors have made a very defensive move. Even if you don't want to change your asset allocation right now, it pays to keep an eye on this.


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Wednesday, September 2, 2009

Benefiting from Simple Hedging Techniques (Part II)

In the previous article, we discuss a simple hedging technique. In this part, we will discuss more effective ways to hedge.
A natural way to improve hedging technique is to use timing indicators as the guide to hedge or unhedge. Moving averages are one of the simplest and effective indicators. Using moving averages, one could start to short the chosen index ETF when the indicator gives a sell signal and then buy back the ETF when the indicator gives a buy signal. ValidFi's Momentum Hedge is a very good example to show that by using such a simple technique, one could achieve a reasonably good return while reducing the risk dramatically. In this strategy, a portfolio based on Sector Rotation Fidelity Select Funds strategy is used as the long portion of the portfolio while short position on SPY is taken based on whether SPY price is lower than the 130 days EMA (Exponential Moving Average) or 200 days SMA (Simple Moving Average). The following is the comparison of the long only portfolio and the hedged portfolio using 130 days EMA up to 9/1/2009.

Last 1 Year (%)Last 3 Year (%)Last 5 Year(%)Since 12/31/1993 (%)
Annual ReturnLong Only-11.83-0.5111.6216.01
Hedged27.68.615.413.8
Sharpe RatioLong Only-32.3-7.635.6955.07
Hedged120.532.162.751.3
Standard DeviationLong Only37.2292724.7
Hedged22.721.321.422.1
Maximum DrawdownLong Only34.947.547.551.1
Hedged13.92020.449.6
Notice that maximum drawdown for the hedged portfolio improved in the last 1, 3 and 5 years but it has a huge 49.6% maximum drawdown since the inception date. This occurred during 2000-2001 period. This offers a cautious tale to hedge against a momentum driven portfolio: there might be still a period of time where some mismatched performances between the long and the short portions of the portfolio could be way too high to be tolerated.
Yet another way to hedge is to always short so called weak assets (or sectors) with a corresponding or a lesser amount. When shorting with equal amount as the long portion's, this is often called zero cost hedge as in theory (and for large institutions), the brokers would use the borrowed amount from the short sale to offset the long amount used. In ValidFi's Global Tactical Asset Allocation Momentum strategy, based on the original paper suggested, 100% short amount is used to short the worst performing three assets based on their past price performance while in the meantime keeping a long portfolio on the best performing three assets. For example, at the moment, the long part of the portfolio consists of VUSTX, GLD, VWEHX and the short part of the portfolio consists of VGSIX, VIMSX and VGTSX. Notice in this portfolio, we use index funds as the shorted indexes. In practice, one should substitute the above using ETFs equivalent. That would translate into long TLT, GLD, HYG and short IYR, MDY and EFA. The result is a mixed bag as one could see from here.
It should be noted that aside from the hedging, one could always perform tactical asset allocation (such as reducing or increasing the risky asset exposure) to avoid taking short positions. It is a simpler solution. The main reason to hedge instead of reducing the risky asset exposure by selling has to be that one believes the long portfolio could outperform the shorted index(es) during the possible market downturn. If this does not hold or it is hard to justify such an out performance, reducing or liquidating the positions is a better choice. The pros and cons should be weighed carefully.
One notable mutual fund which performs long and hedging is Hussman Strategy Growth Fund (HSGFX) managed by John Hussman. For anyone who is interested in the hedging techniques and Dr. Hussman's view point on current economic and market conditions, his weekly comments offer wealth of educational and prescient information.
In conclusions, some simple hedging techniques could go a long way to protect your capital while enhancing returns. In the current economic conditions, it is worthwhile to pay attention to them.

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