Robinhood Markets Inc (NASDAQ:HOOD) stock is struggling amid an extended tech sector rotation, last seen down 0.1% to trade at $121.39. The move lower comes even after the trading platform reported a 34% rise in equity trading volume and a nearly 22% pop in option contracts trading volume from September to October. The company also announced cash deliveries for a fee. HOOD is now down 15.5% this quarter alone and 21.1% off its Oct. 6 record high of $153.86. The shares are testing their 100-day moving averag ...