The S&P 500 has regained more than $10 trillion in market value since its March low, according to Peter Tuchman. Recent moves show the scale of the rally and th

The S&P 500 has regained more than $10 trillion in market value since its March low, according to Peter Tuchman. Recent moves show the scale of the rally and the volatility behind it: +$350 billion in one day, -$1.6 trillion over five sessions.