We leave no stone unturned when looking for the next great investment idea. For example, this investor can predict short term winners following earnings announcements with 77% accuracy, so we check out his stock picks. A former hedge fund manager is pitching the "next Amazon" in this video ; again we are listening. We read hedge fund investor letters and listen to stock pitches at hedge fund conferences. Our best call in 2020 was shorting the market when S&P 500 was trading at 3150 after realizing the coronavirus pandemic's significance before most investors. Now we're going to analyze the fresh hedge fund action encompassing Regenxbio Inc (NASDAQ: RGNX ).