The S&P 500 today touched the lowest since October 15 but has embarked on a strong turnaround. From the low of 6659, it's climbed to 6655, a nearly 100 point rebound. Despite that, the index is still down 15 points, or 0.2%.Three things may have been catalysts:Google releasing Gemini 3 and its looks impressiveMeta winning the antitrust case around Instagram and WhatsappTrump saying that China is buying US farm goods on scheduleThere is certainly some angst about Nvidia earnings tomorrow but shares have trimmed the decline to 1.2% and held the November low.Notable movers:AMZN -3.6%MSFT -2.9%V -1.6%MA -1.8%UNH -2.5%HD -4.6% after earningsAll of them are off the lowsI think it's also notable that the Russell 2000 is in positive territory as it looks like there is rotation away from Mag7 (ex GOOG) and into other names. This article was written by Adam Button at investinglive.com.