Given the amount of capital that B&H needs to invest yearly, this is a natural choice.<p>Buffet likes banks, he said so in the book The Snowball (a must read). Banks have float, which is interest free money "floating around" waiting to be invested by the bank, but not owned by the bank.<p>BOA also sells insurance, which has more float than a bank. B&H has a pretty effective group of insurance business people. A lot of the B&H wealth comes from the insurance industry.