Derivatives

Warren E. Buffett's company, Berkshire Hathaway, reported that its second-quarter net income fell 40 percent, as declining stock prices depressed the value of its derivatives contracts.

Warren E. Buffett's company, Berkshire Hathaway, reported that its second-quarter net income fell 40 percent, as declining stock prices depressed the value of its derivatives contracts.

Warren E. Buffett's company, Berkshire Hathaway, reported that its second-quarter net income fell 40 percent, as declining stock prices depressed the value of its derivatives contracts.

Warren E. Buffett's company, Berkshire Hathaway, reported that its second-quarter net income fell 40 percent, as declining stock prices depressed the value of its derivatives contracts.