Amazon just sold its entire position in IonQ stock.Following the end of each calendar quarter, institutional money managers with over $100 million invested in stocks are required to file a document called a 13F with the Securities and Exchange Commission (SEC). A form 13F itemizes each stock a fund bought and sold during the most recent quarter. What investors might not realize, however, is that corporations also use some of their excess cash to build their own portfolios. As such, businesses may be require ...