Cathie Wood’s ARK Invest snapped up more than $11 million worth of Robinhood (NASDAQ: HOOD) shares after the trading platform’s stock slid sharply. Alongside the Robinhood purchase, ARK Invest also increased exposure to its own spot Bitcoin exchange-traded fund, ARK 21Shares Bitcoin ETF (ARKB). The latest purchase came two months after Wood's firm snapped up HOOD shares worth$21.3 million on Oct. 23. Related: Robinhood’s strategy to simplify crypto investing for beginners Robinhood sees reduced trading ...