According to Yahoo Finance, NVIDIA has long been the most held stock by retail investors on the Robinhood platform. Recently, Elon Musk's Space Exploration Technologies (SpaceX) has surged to the seventh position on Robinhood's retail holdings list as a company with a trillion-dollar valuation. Analysis suggests that SpaceX's rise may be attributed to the market's sustained enthusiasm for artificial intelligence (AI), with the company having secured GPU leasing agreements with Anthropic and Google parent company Alphabet, generating monthly revenues of $1.25 billion and $920 million, respectively. However, the article also notes that SpaceX is not yet profitable, and its accelerated and phased insider stock unlock plan could be disadvantageous for retail investors.