Past records cannot forecast results
“Berkshire's 26-year record is meaningless in forecasting future results; so also, we hope, is the one-year record.”
Investing
Warren Buffett's 1990 letter to Berkshire shareholders, one of the letters in Berkshire Hathaway Shareholder Letters, 1971–2025.
“Berkshire's 26-year record is meaningless in forecasting future results; so also, we hope, is the one-year record.”
“Ideally, the results of every Berkshire shareholder would closely mirror those of the company during his period of ownership. That is why Charlie Munger, Berkshire's Vice Chairman and my partner, and I hope for Berkshire to sell consistently at about intrinsic value.”
“Our job is merely to identify talented managers and provide an environment in which they can do their stuff.”
“In reality, however, earnings can be as pliable as putty when a charlatan heads the company reporting them. Eventually truth will surface, but in the meantime a lot of money can change hands.”
“Clearly, investors must always keep their guard up and use accounting numbers as a beginning, not an end, in their attempts to calculate true 'economic earnings' accruing to them.”
“The explanation is clear: Our extraordinary returns flow from outstanding operating managers, not fortuitous industry economics.”
“Just as Wal-Mart, with its 15% operating costs, sells at prices that high-cost competitors can't touch and thereby constantly increases its market share, so does Borsheim's. What works with diapers works with diamonds.”
“The reason media businesses have been so outstanding in the past was not physical growth, but rather the unusual pricing power that most participants wielded.”
“(Charlie and I always have preferred a lumpy 15% return to a smooth 12%.)”
“Figuring a cost of funds for an insurance business allows anyone analyzing it to determine whether the operation has a positive or negative value for shareholders.”
“Insurance offers a host of opportunities for error, and when opportunity knocked, too often I answered. Many years later, the bills keep arriving for these mistakes: In the insurance business, there is no statute of limitations on stupidity.”
“Lethargy bordering on sloth remains the cornerstone of our investment style: This year we neither bought nor sold a share of five of our six major holdings.”
“When assets are twenty times equity - a common ratio in [banking] - mistakes that involve only a small portion of assets can destroy a major portion of equity.”
“In their lending, many bankers played follow-the-leader with lemming-like zeal; now they are experiencing a lemming-like fate.”
“Because leverage of 20:1 magnifies the effects of managerial strengths and weaknesses, we have no interest in purchasing shares of a poorly-managed bank at a 'cheap' price.”
“Given [our perpetual buying], declining prices for businesses benefit us, and rising prices hurt us.”
“We want to do business in [times of pessimism], not because we like pessimism but because we like the prices it produces. It's optimism that is the enemy of the rational buyer.”
“None of [the prices pessimism produces] means, however, that a business or stock is an intelligent purchase simply because it is unpopular; a contrarian approach is just as foolish as a follow-the-crowd strategy. What's required is thinking rather than polling.”
“The roads of business are riddled with potholes; a plan that requires dodging them all is a plan for disaster.”
“(Beware of past-performance 'proofs' in finance: If history books were the key to riches, the Forbes 400 would consist of librarians.)”
“As usual, the Street's enthusiasm for an idea was proportional not to its merit, but rather to the revenue it would produce.”
“The trouble [kamikaze pricing] has produced for all carriers illustrates an important truth: In a business selling a commodity-type product, it's impossible to be a lot smarter than your dumbest competitor.”
“If your employees, including your CEO, wish to give to their alma maters or other institutions to which they feel a personal attachment, we believe they should use their own money, not yours.”