According to ChainCatcher, on-chain analyst Yu Jin has monitored that a certain address has been continuously purchasing SOL through OTC since the end of April, and has recently increased its SOL buying activity: in just the past 4 days, it purchased 249,500 SOL (46.78 million USD) via FalconX and Wintermute.
From the end of April until now, over a period of half a year, this address has purchased a total of 827,000 SOL (146 million USD) and staked all of it, with an average price of 177 USD.