Business Quality

Common Stocks and Uncommon Profits

Philip Fisher on doing your own homework by simply asking around.

Philip Fisher1958

Call a competitor and ask what they think of the company. Call a supplier. Call a customer who left. Philip Fisher called this scuttlebutt, and it is still the most practical idea in Common Stocks and Uncommon Profits.

The financial statements tell you what happened. The people around the company tell you why.

Judging management by watching, not by listening

Fisher's second contribution is a method for evaluating management that has nothing to do with what they say on an earnings call. Watch how they handle a bad quarter. Watch whether they are honest about a mistake or spin it. Watch how they treat people below them. That behavior, observed over time, tells you more than any interview, because the stock market is full of people who know the price of everything and the value of nothing, and management's real character only shows up under pressure.

A few outstanding companies beat a lot of good ones

Fisher's other lasting argument is against diversification for its own sake. He would rather own a handful of companies he understood completely than twenty he understood partially. That only works if the homework, the scuttlebutt, actually gets done first. Do it right at the purchase, and the time to sell is almost never, because most of the reasons to sell later are just a reaction to noise.

There is a quieter payoff to all of this too. Conservative investors, the ones who did the work up front and are not constantly second-guessing the position, sleep well.

The stock market is filled with individuals who know the price of everything, but the value of nothing.
Philip Fisher · Common Stocks and Uncommon Profits, 1958
If the job has been correctly done when a common stock is purchased, the time to sell it is almost never.
Philip Fisher · Common Stocks and Uncommon Profits, 1958
Conservative investors sleep well.
Philip Fisher · Common Stocks and Uncommon Profits, 1958

Related in the notebook

One Up on Wall Street

Business Quality

Peter Lynch's argument that ordinary people have a structural edge Wall Street can't touch, if they actually do the homework.

Peter Lynch · 1989

Margin of Safety

Business Quality

The value investing book Wall Street tried to make disappear, because it worked too well for the people who owned copies.

Seth Klarman · 1991