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you consider a16z an institution ? I didn't think they were that big.

Well, they're not the leader of the custodial pack, hehe, but $35 billion AUM is quite substantial. They started investing in $BTC in 2013, so probably own a respectable chunk of it. [and sorry for the late answer! 🙃]

wow that is quite a lot.
I didn't know they were that large.

Correct. In 2022, my country's GDP - El Salvador's - was less than that, lol (USD 32.49 billion).