When Buffett acquired National Indemnity in 1967, he was among the first to recognize the leverage inherent in insurance companies with the ability to generate low-cost float. The acquisition was, in his words, a “watershed” for Berkshire. As he explains, “Float is money we hold but don’t own. In an insurance operation, float arises because premiums are received before losses are paid, an interval that sometimes extends over many years. During that time, the insurer invests the money.”
