Common Stocks Chapter 4: The Five Don'ts

"Don't quibble over eighths and quarters." — Philip Fisher

The Investment Context

In addition to telling investors what to look for, Fisher provided a critical list of "Don'ts"—common traps that cause investors to lose money or miss out on massive gains.

Key among these rules are: 1. Don't buy into promotional companies: Avoid companies that are all hype and no substance. 2. Don't ignore a good stock just because it is traded "over the counter": A great business is a great business, regardless of the exchange it trades on. 3. Don't quibble over eighths and quarters: (Referring to fractions of a dollar in older stock quotes). Do not miss buying a great stock because you are trying to get an entry price that is 10 cents cheaper.

The Wall Street Translation

Fisher's "Don'ts" address the psychological weaknesses that plague retail and institutional investors alike.

1. The Penny-Pinching Blunder: Imagine doing 100 hours of research, identifying the next Apple or Amazon, but refusing to buy it at $50 because you placed a limit order at $49.50. The stock runs to $500, and you missed it because you "quibbled over quarters." If the thesis is correct, a 1% difference in the entry price is meaningless.
2. The Promotional Trap: Today, "promotional companies" take the form of heavily hyped SPACs, pre-revenue biotech companies, or AI startups with nothing but a pitch deck. If a CEO spends more time on financial television promoting the stock than they do running the business, stay away.
3. The Dividend Distraction: Fisher explicitly warned against prioritizing high dividends when looking for growth. A truly great growth company can reinvest its cash internally at a 20% return. If they pay it out to you as a dividend, you will pay taxes on it, and you likely won't find a 20% return elsewhere. High dividends are for mature, stagnant companies.

Actionable Trading Rules

1. Use Market Orders for Long-Term Holds: If you have found a company that you plan to hold for 10 years and expect it to compound massively, do not use limit orders to try and save a few pennies. Just buy the stock.
2. Beware the "Story Stock": If the entire bull case for a company rests on a charismatic CEO telling a story about a product that doesn't exist yet, it fails the Fisher test. You want actual commercial traction, not just a good story.
3. Stop Chasing Yield: If you are a young investor trying to build wealth, do not fill your portfolio with 5% dividend-paying utility companies. Seek out companies that aggressively reinvest their earnings into compounding their own growth.