H97 ng are gawrav Warren Buffett has said in the past that he is against using leverage to buy stocks. While that is good advice, what often gets ignored is that his insurance company, GEICO, a subsidiary of Berkshire Hathaway (BRK.A)(BRK.B), enabled him to get a head start over simply using only 'owned' cash to invest. That's because insurance companies carry a float, which is basically the unpaid premiums on policies, and so long as thresholds are met, it can be invested to generate extra earnings for the ...