Apparently, the rumor is that BlackRock already lined up $2bil from existing bitcoin investors in wk1.
Analysts are stunned...no kidding.

https://www.forbes.com/sites/digital-assets/2024/01/06/insider-leak-reveals-huge-blackrock-bitcoin-etf-bazooka-will-blow-expectations-out-of-the-water-after-16-trillion-ethereum-xrp-solana-and-crypto-price-boom/