From who they buy from?
Coinbase kraken binance?
Who has so big ammount of cash now what grayscale gives? The CEO-s and company Names?
This is already an issue even back then where they bought so huge amount but I don't see why this keeps being a new thread. Better see this thread
[1] instead of making a new one, hence lock this thread as well. All of the questions you have are already on that thread so better check it out!
[1] -
https://bitcointalk.org/index.php?topic=5256529.0