Key PointsMuch is made of Berkshire Hathaway's investments, but the real story behind the company's success is the "float."Auto insurance giant Progressive generated nearly $1 billion from its float in the first quarter of 2026 alone.The ability to invest premiums until they are needed to pay claims can be hugely profitable for insurance companies.10 stocks we like better than Progressive › Berkshire Hathaway (NYSE: BRKA)(NYSE: BRKB) is one of t…