By Dan Weil Asset manager Cathie Wood had been regularly unloading Palantir. On Friday she sold the last of the software company’s shares held in three Ark funds. Investment manager Cathie Wood, chief executive of Ark Investment Management, continues to buy and sell stocks as volatility rules the equity market. In recent days she had been unloading the stock of data-mining company Palantir Technologies (PLTR) – Get Palantir Technologies Inc. Class A Report. And on Friday she sold the last holdings of Palantir in three Ark exchange-traded funds, including the flagship Ark Innovation ETF (ARKK) …