The astounding recovery in the S&P 500 (SPX) is something Liz Ann Sonders attributes to short-term money entering the market entering a "very, very small handful of stocks." She wants to see strength broaden in the index before gaining confidence in the rally. Joe Mazzola adds to the Charles Schwab Big Picture panel by attributing the eye-watering move to hedge funds covering shorts. They offer an in-depth conversation on the flows behind the price action and discuss whether the run higher has more legs.