Turnaround Tuesday?Facebook (FB) - the poster child for the tech wreck is up nearly 2% today. Very bullish sign that $130 is the lows of this cycle. Nvidia (NVDA) - the Citron Research bull call has the stock up 5.5%.... another bullish sign. Square (SQ) - the mobile payments provider was down some 10% on a downgrade and is now green. All of these moves are signs that this is indeed Turnaround Tuesday. Disclosure: No positions mentioned.