The algos, or rather the math geeks that program the algos for the likes of Getco, Goldman, Citadel, Renaissance, and a handful of other banks/hedge funds/HFT outfits that can trade at the speed of light, appear to be a bit confused at the moment. On Thursday, the S&P 500 (NYSE: SPY). Read More. Don t Miss Any Updates! News Directly in Your Inbox Subscribe to: