BlackRock ETFs hold $384 million of shares in Bitcoin mining firms Post author:MiamiCrypto Post published:August 20, 2021 Post category:BlackRock / ETF / Marathon Digital Holdings / Riot Blockchain SEC filings reveal that BlackRock has invested almost $400 million into Riot Blockchain and Marathon Digital Holdings stock. You Might Also Like Bulls fight to keep Ethereum price above $4K ahead of Friday’s $435M options expiry October 22, 2021 Stablecoin Activity Surges to 49.7x Velocity as Crypto ETF Outflows Deepen June 2, 2026 3 Reasons Bitcoin Buckled as January Closed January 31, 2026