Bill Nygren Market Commentary | 4Q13

Theme and Background

This chapter uses the "hindsight bias" phenomenon in sports decision-making as a lead-in to explore the relationship between process and outcome in investment decisions. The author points out that the market is always filled with frightening events ("It’s always something"), but long-term data shows that stocks are the asset class with the highest returns, and attempting to time the market is futile for most investors.

Core Thesis

The author’s core investment argument is: Investors should, like good coaches, make decisions based on probabilities, rather than being swayed by short-term outcomes or market noise. The counterintuitive judgment is that, although the media often portrays bears as more "thoughtful," historical data shows that the probability of the stock market rising (73% of years with positive returns) is far higher than that of falling, so bulls actually bear a lower burden of proof.

Key Arguments and Data

• Probabilistic Analysis of Sports Decisions:
• Alabama coach Saban attempted a 57-yard field goal: success rate approximately 18% (far higher than a Hail Mary), and the probability of a return touchdown was less than 1% → Good decision, bad outcome.
• Chicago Bears coach Trestman attempted a 47-yard field goal on second down: success rate approximately 65%, but advancing 10 yards could boost it to nearly 90%, and the probability of gaining yardage on two downs is far higher than losing yardage → Bad decision, bad outcome.
• Long-Term Asset Return Data (Ibbotson Associates):

Asset Class	Average Annual Return Since 1926
Stocks	10%
U.S. Treasury Bonds	Below 6%

• Market Up/Down Probabilities:
• Since 1926, the S&P 500 index has declined in 24 out of 88 years, meaning only 27% of years saw losses.
• The author likens the probability of a down year to that of an "8-point underdog winning a football game"—possible, but not worth betting on.
• 2013 Market Performance: The S&P 500 rose over 30%, but bears cited reasons such as "risk after new highs," "China’s slowing growth," "government shutdown," and "Fed tapering QE" to stay bearish. The author argues that these fears exist every year, yet the market still rises over the long term.

Companies/Assets Involved

• S&P 500 Index: The core subject of discussion. The author notes that the index has risen 125% over the past five years, but the intrinsic value of companies has not grown in tandem, so stocks are no longer as cheap as before. However, based on metrics like the price-to-earnings ratio, valuations are at historical averages, and such levels have historically delivered average returns.
• Oakmark Fund: As a practitioner of the investment strategy, it emphasizes long-term holding of growth companies trading below intrinsic value, patiently waiting for the price gap to narrow.

Investment Implications

• Do not deviate from long-term financial plans due to short-term events: Periodically review asset allocation and restore the portfolio to its long-term balance. Rebalancing may not yield immediate profits (like a 47-yard field goal that might miss), but it ensures the odds are in the investor’s favor.
• Avoid market timing: Virtually all research shows that market timing is futile for most investors. Historical data supports a "buy and hold" strategy rather than attempting to avoid down years.
• Bulls have a probabilistic advantage: Since 1926, the stock market has risen in 73% of years, equivalent to an "8-point favorite." Investors should recognize that bears need to provide stronger evidence to justify their views.

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Theme and Background

This section provides only a definition of the S&P 500 Total Return Index, noting that it is a market-cap-weighted index comprising 500 large-cap stocks, commonly used to represent the U.S. stock market. The index calculation assumes reinvestment of dividends and capital gains. This content serves as basic informational background in the report and contains no investment analysis, opinions, or data.

Core Viewpoint

This section contains no core investment viewpoint. The author does not present any investment thesis or market judgment.

Key Arguments and Data

This section contains no key arguments or data. It only provides the index definition, without any specific figures, cases, or historical comparisons.

Companies/Assets Involved

This section does not mention any specific companies or assets.

Investment Implications

This section offers no direct implications for investors. The content is merely an index definition and does not constitute any investment direction or advice.