Philip Fisher was prepared to wait years for a stock to reward him. He also distrusted conviction without a way to test it. If his opinion of a company remained unchanged but its shares had not performed after three years, he generally sold. This was his personal discipline, not an expiry date for every investment. New evidence could justify selling much sooner. In practice, continuing investigation usually changed his judgment before the deadline alone forced a sale.
He asked clients to give him the same three years to produce worthwhile results, and to dismiss him if he failed. A weak first or second year alone could not settle whether an investment was sound. Nor could one successful year prove good judgment; luck might deserve some credit. Fisher tried to understand the causes of mistakes, correct them promptly, and leave sound businesses time to grow. Patience required continuing evidence. It also needed a check against waiting indefinitely to be proved right.
He reported only one exception to his three-year rule. By the middle of the 1970s, his investment in Rogers Corporation had reached that age with earnings and the share price down. He still valued its leaders and technical skills. Its president, Norman Greenman, disclosed bad news candidly, even when embarrassing. One development effort had absorbed money and research talent that other promising products needed. Dropping it freed those resources, and several innovations began to progress. Fisher saw prospects for years of growth and increased his and his clients' holdings. Earnings and the shares subsequently rose. The exception rested on an identifiable change and fresh evidence, rather than his reluctance to admit a loss.
When the reason to wait changes
Fisher's own success could weaken those checks. He had earned excellent returns from a company given the fictitious name "Central California Electronics" in the book. Over time, he relied too heavily on senior managers and checked too little with customers and people lower in the organization. During a recovery after a severe share-price fall, management problems emerged and personnel changed. Further investigation convinced him that he had misjudged the former managers. He also lacked confidence in their replacements. He sold because his view of the business had changed.
Fisher treated price disappointment differently from a damaged business case. He trusted a researched view of long-term business prospects more than a prediction of prices six months ahead. Prices also reflected changing investor attitudes. Holding through a decline required exceptional prospects and enough financial strength to survive adversity. His experiences included enormous losses from earlier peaks; they established neither a floor under prices nor a promise of recovery. A damaged business could keep deteriorating while its owner waited.
He would sell when a company materially changed, when managers could not develop the skills to run a larger organization, or when growth faster than the economy no longer looked plausible. Having already made a satisfying profit was a different consideration. Selling healthy businesses for small gains while leaving mistakes untouched would reverse the discipline he was trying to develop.
Getting out is only half the trade
One Texas Instruments client still liked the company but wanted to take profits and buy back more cheaply. After pressure from the client, Fisher agreed to sell part of the holding. Years later, the shares fell eighty percent from a much higher peak. Even that low was almost forty percent above the earlier sale price. The decline the client had hoped to exploit did not deliver the price they were waiting for.
An exit therefore needed a workable return. Refusing to repurchase above an old sale price could leave an investor outside a growing business for years. Forecasting a downturn would not solve that second decision. Even trades that made money had to justify the research effort, transaction costs, and risk of missing greater long-term gains. The relevant comparison was with the opportunity given up, rather than the number of winning trades.
The cost of an unfinished decision
A much smaller price difference stopped another client from acting at all. After visiting Food Machinery, Fisher recommended buying more shares. The client agreed about the business but placed a bid below the recent market price. When the stock traded just above his bid, Fisher twice urged him to add twenty-five cents. He refused. Within weeks, the shares rose more than fifty percent.
Fisher recognized the same rigidity in himself, especially when selling. One sale limit missed execution by twenty-five cents. By the time he wrote about it, the shares had fallen thirty-five percent from that level; he had sold only part of the holding at an intermediate price. A sound conclusion had failed to become a completed transaction.
Execution price still mattered. Early purchases in a large order could push up the cost of every share still to be acquired. In that situation, small increments had a real economic consequence. And a promising business could still be too expensive. Fisher's objection concerned arbitrary limits that blocked otherwise justified transactions. The analysis needed to establish both whether the investment made sense and whether the price justified action. Attachment to a few cents could prevent an investor from acting on either answer.
Three things to keep
Keep testing the business case while giving a sound company time.
Selling to avoid a decline also requires a workable decision about buying back.
A price limit needs a valuation or execution reason, not attachment to a number.