Investors Scramble for Stock in Buffett Frenzy builds as Berkshire Hathaway joins S&P 500 today By Kevin Spak, Newser Staff Posted Feb 12, 2010 7:24 AM CST 7 comments Comments Investor Warren Buffett gestures during an interview prior to a special Berkshire Hathaway shareholders meeting in Omaha, Neb., Wednesday, Jan. 20, 2010. (AP Photo/Nati Harnik) (Newser) – Warren Buffett’s renowned Berkshire Hathaway joins the S&P 500 today, and just about everyone wants a piece of it. Millions of ordinary Americans who in the past couldn’t afford the company’s high-priced shares will now be able to get on board, either through an index fund, or by buying B shares, which underwent a 50-to-1 split so that their dollar price would be low enough to join the index. Funds tracking the S&P control more than $1 trillion of investor money, and they’ll all need to buy some Berkshire stock as well. And all the interest surrounding the stock has made it a magnet for fast-moving day-traders—the kind of investors Buffett’s always sought to avoid. All of which has market watchers bullish on Berkshire, the Wall Street Journal reports; the stock’s already up 10% since the split.