They are thenselves institutional BTC holders, so I'm not sure if they need to outsource it.
Microstrategy is using Coinbase.
Microstrategy is using Coinbase.
Traditional stock market buys tons of coinbase cash -> coinbase uses said cash to market-buy BTC with bots driving the price up -> BTC/their crypto of choice is now worth far more.
If the market follows their run they end up making far more than they reinvested.