Performance of Individual U.S. common stocks from 1983 to 2006 did not follow the familiar bell curve

 

Based on the five images (see below) from the article "The Capitalism Distribution" by Longboard, here is a summary of the key findings:

The article examines the performance of individual U.S. common stocks from 1983 to 2006 and finds that returns follow a highly non-normal ("fat-tailed") distribution, unlike the familiar bell curve. Most people think of index returns (like the S&P 500 or Russell 3000), but the reality "under the hood" is dramatically different:

- **Most stocks perform poorly:** 39% of all stocks had a negative total return, and 18.5% lost at least 75% of their value. 64% of stocks underperformed the Russell 3000 index.

- **A small minority drives all gains:** The worst-performing 75% of stocks collectively had a total return of 0%. The best-performing 25% of stocks accounted for *all* of the market's net gains. If an investor missed that 25%, their overall return would have been zero.

- **Why indexes still rise:** Market-cap-weighted indexes (like the Russell 3000) naturally favor winners (whose prices rise and gain weight) and punish losers (whose prices fall and are eventually delisted). Losing stocks also tend to have shorter lifespans (6.85 years vs. 9.23 years for winners), limiting their negative impact.

- **Common trait of winners:** The biggest winning stocks (e.g., Cisco, GE, Microsoft, Intel) spent a disproportionate amount of time making new multi-year highs on their way up—hundreds of times over many years. Conversely, losers spent zero time at new highs and more time at multi-year lows. Many winning stocks were eventually acquired (60% of top annualized return stocks), but most (68% of top total return stocks) are still trading as large caps.

- **Implication for investors:** This persistent non-normal distribution across stocks, commodities, currencies, and fixed income suggests that investors should be aware of their investment strategy to be effective in capturing profits across global asset classes.

Investors are confused about the stock market today

The Problem:
Stocks of large, well-known companies are now swinging 15–20% in a single day — moves that used to take a year. This isn't due to fraud or bankruptcy risk. Something has fundamentally changed in how markets function.

Why is this happening? Three reasons:

1. Fewer active buyers — Traditional fund managers who used to "buy the dip" have been losing money for over a decade. When panic selling starts, no one is there to catch it.

2. Buybacks disappear at the worst time — Companies are the biggest buyers of their own stock, but they're legally barred from buying during the weeks surrounding earnings reports — exactly when bad news hits and selling occurs.

3. Algorithms amplify chaos — 60–70% of trading is done by computers. When volatility spikes, these algorithms automatically shut down, liquidity vanishes, and momentum-trading bots accelerate the sell-off.

What should investors do?

• Don't confuse volatility with permanent loss. A 20% drop in one day is scary but not necessarily a sign the business is broken.

• Ignore the noise. The best investors (Terry Smith, Howard Marks) stay focused on business fundamentals, not daily price swings.

• Be patient and selective. In a market dominated by passive, momentum-driven flows, the most contrarian thing you can do is own good companies at reasonable prices — and do nothing.

• Avoid leverage. The ability to sit calmly through violent swings requires not being forced to sell.

The bottom line: The market has been mechanically rewired to amplify moves in both directions. Investors who succeed will be those who understand what they own well enough to stay calm when the market is doing the opposite.

When to Sell a Stock

 When to Sell a Stock:

Sell only for valid reasons:

Wrong facts: You initially misjudged the management, business quality, or competitive moat.

Changing facts: The business fundamentals are deteriorating (e.g., poor capital allocation, worsening management).

Better opportunity: You need to free up cash for a superior investment.

Need cash: You have a personal financial obligation.



Do not sell for these reasons:

Stock is overpriced: Avoid selling solely based on valuation metrics like P/E. A great business often appears overpriced. Focus on long-term potential (next 10 years) rather than short-term price fluctuations.

Emotional or timing-based reasons: Do not sell just because the stock has gone up, you expect a short-term correction, or you want to lock in paper profits.



Key philosophy: If you made a mistake, accept it and move on. However, if your original investment thesis remains intact, the ideal holding period is "almost never."