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 Morgan Stanley’s MSBT Bitcoin ETF Wallets Now Publicly Trackable via Arkham April 19, 2026 Coming to Texas: Riot Blockchain announces plans to move NY miners to Lone Star State July 6, 2022 Morgan Stanley MSBT Bitcoin ETF Launch Draws $34M April 9, 2026