An analyst from The Motley Fool compared Micron Technology and Space Exploration Technologies (SpaceX), noting Micron's impressive 346% growth in recent quarters and SpaceX's 92% growth, making them the fastest-growing trillion-dollar companies. Despite SpaceX's diverse business model, the analyst highlighted Micron's soaring profits and a more reasonable valuation, trading at 12.4 times forward earnings for FY2026 and 5.9 times for FY2027. In contrast, SpaceX is estimated to trade at 43 times 2026 sales estimates, with no current profits. The analyst concluded that Micron is the better investment due to its valuation and expected continued growth in the memory chip market.