Look up Berkshire Hathaway's stock price and you'll do a double take. A single Class A share trades for an amount that could buy a house outright in a lot of Indian cities, sometimes more than one. Nearly every other major public company has split its stock at some point to bring the price down to something ordinary people can afford. Buffett refused to do that with Berkshire's original shares for decades, and the reasoning behind it says a lot about how he actually thinks about investing.