Berkshire Hathaway Stock Down 25%

Warren Buffett's Berkshire Hathaway class A shares closed exactly 25 percent below the all-time high set last December.

Today's closing price of $111,900 per share is the lowest for the stock since August 15.

Berkshire is down 21.0 percent in 2008, underperforming the benchmark S&P 500 stock index, which has dropped 15.9 percent this year.