Is Berkshire Hathaway Stock a Better Buy Than an S&P 500 Index Fund?

Experienced investors know the advantages of buying and holding S&P 500 index funds like the Vanguard S&P 500 ETF (NYSEMKT: VOO) or the SPDR S&P 500 ETF Trust (NYSEMKT: SPY). Not only are they super simple, but statistically speaking, you're likely to get better performance from them than you are by picking individual stocks or by owning an actively managed fund. Nevertheless, given its long-term (and often market-beating) track record, even the most disciplined of investors might have the itch to step into a stake in Berkshire Hathaway (NYSE: BRKA) (NYSE: BRKB). But is it actually the better buy? Missed Nvidia in 2009? This Rare Signal Is Flashing Again. In 2009, a "Double Down" signal flashed for a little-known chipmaker called Nvidia.