also i believe they used a custodian to start but it is good to see that they self custody as they are a technology company 

I remember them saying they weren't going to disclose this publicaly at one point.

k00b

I believe they self-custody

https://www.nasdaq.com/articles/michael-saylor%3A-we-custody-our-bitcoin-and-do-not-lend-it-out-2021-08-23

0xIlmari

Does anyone know if Microstrategy has its coins in self-custody or in a multi-sig? If not, I hope they move it to some sort of self-custodial solution soon. If exchanges start imploding due to being insolvent, Saylor could be in trouble.