Sources: Founders Fund's ~3% stake in SpaceX is now worth $50B+, after investing $600M; a16z will get the biggest return in its history, with a $10B+ stake (Bloomberg)

Bloomberg: Sources: Founders Fund's ~3% stake in SpaceX is now worth $50B+, after investing $600M; a16z will get the biggest return in its history, with a $10B+ stake — A small number of firms are set to net tens of billions of dollars in returns from SpaceX's initial public offering …