Wall Street's Biggest Bear Turns Bullish, Expects A Rally Sending S&P500 As High As 4,150

Over the weekend - in "Behind Friday's Market Massacre: A Huge Burst Of Hedge Funds Shorting, Setting Up Another Squeeze"- we were very clear to warn readers that the exact same delta-squeeze cocktail that sparked a furious post-CPI meltup...

... was very clear and quite present once again heading into Monday, and that another big squeeze was on deck, to wit: