Weeping. Wailing. The fetal position. Any of those would have been a fitting response to the collapse of equities -- and virtually every other asset class -- in 2008 and early 2009. For many, the S&P 500 index's most recent crater on March 9 took on near-talismanic significance. You could almost hear the pleading: Please let that be the bottom. Please let that be the bottom. For now, the spring rally has held, with a euphoric 40% jump in the S&P from its March low to June 1.