Strategy (formerly MicroStrategy) surpasses 500,000 BTC in its corporate treasury, worth over $50 billion, making it the largest corporate holder of Bitcoin in history by a wide margin. Michael Saylor's conviction bet, started with 21,454 BTC in August 2020 at ~$11,653 per coin, grew through a relentless series of purchases funded by convertible notes, at-the-market stock offerings, and operating cash flow. Strategy's stock (MSTR) became a de facto leveraged Bitcoin proxy, outperforming nearly every asset on the NASDAQ over the period.
Wikipedia: Strategy (MicroStrategy)