Key Points In 1988, Buffett secured permission from the SEC to not disclose Berkshire's trades, lest others follow him. Decades later, he pointed to one stock as an example of "the secret sauce" behind Berkshire's huge gains. Today, its $816 million in yearly dividends provide Buffett more than a 50% annual yield on his investment. 10 stocks we like better than Coca-Cola › In the late 1980s, Warren Buffett asked the Securities & Exchange Commission (SEC) for special permission not to disclose hi ...