They're up about 23 percent this year, slightly outperforming the S&P 500 Index, as investors bet that Buffett will be able to continue expanding his business with stock picks and acquisitions.
The company may also be a
major beneficiary of the Republican tax-cut plan making its way through Congress.
About three years ago the Berkshire shares
crossed the $200,000 mark. It took almost eight years before that to climb from $100,000.
Buffett, 87, started accumulating the stock at $7.50 a share in December 1962.
— With assistance by Vincent Bielski, and Katherine Burton
