The restatement was required because GEICO became a wholly-owned subsidiary of Berkshire on January 2, 1996, whereas it was previously classified as an investment. From an economic viewpoint - taking into account…
The restatement was required because GEICO became a wholly-owned subsidiary of Berkshire on January 2, 1996, whereas it was previously classified as an investment. From an economic viewpoint - taking into account…
Warren Buffett《Berkshire Hathaway 1984 Letter to Shareholders》· 1984 Chairman's Letter · Investing
Our gain in net worth during 1984 was $152.6 million, or $133 per share. This sounds pretty good but actually it’s mediocre. Economic gains must be evaluated by comparison with the capital that produces them. Our twenty-year compounded annual gain in book value has been 22.1% (from $19.46 in 1964 to $1108.77 in 1984), but our gain in 1984 was only 13.6%.
The restatement was required because GEICO became a wholly-owned subsidiary of Berkshire on January 2, 1996, whereas it was previously classified as an investment. From an economic viewpoint - taking into account…
21:00 Figures · Investing · Modern investor letters
Benjamin Graham:Diversification and Margin of Safety
Benjamin Graham《The Intelligent Investor》· Chapter 20, Margin of Safety as the Central Concept of Investment · Investing · Decision · Wealth
Diversification is an established tenet of conservative investment. By accepting it so universally, investors are really demonstrating their acceptance of the margin-of-safety principle, to which diversification is the companion.
Diversification is the practical companion of the margin-of-safety principle.
Context
Graham treated diversification not as mere “buying more names” but as the companion of the margin-of-safety principle. Even a margin of safety cannot prevent any single security from turning out badly; spreading enough independent commitments makes the aggregate result more reliable. The logic resembles insurance underwriting.
Today's question
Could one wrong judgment in your portfolio be catastrophic—and is diversification protecting you or diluting your edge?