Historically, Berkshire Hathaway shares have been split into Class A, which closed at $97,500 each on Friday, and Class B--known as "Baby Bs"--which closed at $3,247. These lofty prices discouraged small retail investors and the high-frequency traders who can buy and sell millions of shares in a millisecond. A 50-to-1 split of the B shares would drop their price to around $65, enabling an influx of new investors and making the company eligible for inclusion in the S&P 500 index (Berkshire Hathaway is the largest corporation excluded from the index).
Since Buffett has previously expressed concern that a share split would discourage long-term investing, the Burlington deal must have been attractive enough to change his mind. Opening up Berkshire to a new cadre of investors may puncture the legendary aura surrounding Buffett's company, but it also exemplifies the pragmatism responsible for creating the aura in the first place.
This article available online at:
http://www.theatlantic.com/business/archive/2010/01/warren-buffett-now-retailing-for-65/33766/