Dave Portnoy just taught America one of the most important phrases on Wall Street
3:00pm PST - February 2nd, 2021 chris cuomo - Business InsiderSummary List PlacementPour one out for Barstool Sports founder Dave Portnoy. After cheering their meteoric rise, he sold his position in "meme stocks" like AMC and GameStop on Tuesday at a $700,000 loss, and in the process taught America one of the most impor…