Warren Buffett, the legendary investor and former chief executive officer of Berkshire Hathaway (NYSE: BRKA) (NYSE: BRKB), has had a lot of great quips about investing and life over the years. And some of his best investing advice is often contrary to people's instincts. For example, Buffett once said, "Whether we're talking about socks or stocks, I like buying quality merchandise when it is marked down." Missed Nvidia in 2009? This Rare Signal Is Flashing Again. In 2009, a "Double Down" signal flashed for a little-known chipmaker called Nvidia. For the first time in years, that same "Total Conviction" signal is flashing for a company 1/100th the size of Nvidia.
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