The S&P 500 couldn't quite make its all-time closing high today, but it was close enough for MarketBeat's David Gaffen to consider how well investors would have done if they stood pat since the March 24, 2000 closing high of 1527.46. The answer depends on the sector. Tech was and remains a disaster, down 61 percent from that day seven years ago. Telecom is only a bit less awful, down 44 percent. But the energy sector gained 148 percent and utilities were up 46.5 percent.