Conventionalism vs Conservatism

Conventionalism vs. Conservatism is Warren Buffett's framework for distinguishing between true investment safety (conservatism) and herd-like behavior designed to minimize social or career risk (conventionalism).

📍 Origin

The concept was first defined by Buffett in the 1966 Partnership Letter in response to partners who wanted to time the market during a decline:

"If you have a group of copycats doing something foolish, and you join them, you are conventional, but you are certainly not conservative."

🧠 The Core Argument

• The Premise: Wall Street and institutional asset management define "conservatism" as matching the behavior of peers or the index. This shifts the focus from avoiding absolute capital loss to avoiding relative underperformance.
• The Mechanism: Conventionalism leads to buying overvalued assets during bubbles because "everyone else is doing it," and selling undervalued assets during panics. True conservatism, by contrast, relies on an independent assessment of business value and cash flows, completely ignoring market price fluctuations.
• The Conclusion: An investor who behaves conventionally is taking on massive risk of permanent capital loss, while the investor who behaves unconventionally by buying undervalued assets during panics is practicing true conservatism.

📅 Chronological Evolution

• 1966 Partnership Letter: Buffett defends the partnership's contrarian position during a down market, distinguishing BPL's absolute return focus from the conventional relative return focus of mutual funds.
• 1984 Letter: Buffett extends the critique to corporate acquisitions and institutional management, coining the rule that "most managers would rather fail conventionally than succeed unconventionally." He argues that boards and institutional committees create an environment where copying bad behavior is safe for careers but disastrous for capital.
• 1990 Letter: Buffett observes how conventional bank lending practices led to the Savings & Loan crisis, noting that bankers copy each other's foolish lending standards to remain conventional, rather than practicing conservative credit underwriting.

🗣️ Primary Source Quotes

"If you have a group of copycats doing something foolish, and you join them, you are conventional, but you are certainly not conservative." — Warren Buffett, 1966 Partnership Letter

"Most managers would rather fail conventionally than succeed unconventionally." — Warren Buffett, 1984 Letter

🔗 Connections

• Related Concepts: The Ground Rules, Overdiversification, Mr. Market, Owner-Operator Mentality
• Related Entities: Berkshire Hathaway Inc.
• Key Sources: 1966 Letter, 1984 Letter, 1990 Letter