Retail investors who clamored for shares in SpaceX 's blockbuster initial public offering received only a fraction of what many had requested, and are already split on what to do with the stock. Across online investing forums, users complained of allocations as small as a single share despite requesting far larger amounts. Those who did receive stock are taking different approaches, with some selling into the company's market debut while others are holding for the long haul. Marvin Jung, a 51-