We leave no stone unturned when looking for the next great investment idea. For example Europe is set to become the world's largest cannabis market, so we check out this European marijuana stock pitch. We read hedge fund investor letters and listen to stock pitches at hedge fund conferences. This December, we recommended Adams Energy as a one-way bet based on an under-the-radar fund manager's investor letter and the stock is still extremely cheap despite already gaining 20 percent. With all of this in mind we're going to take a gander at the fresh hedge fund action encompassing Momo Inc (NASDAQ: MOMO ).