Bitcoin Miners Had a $2 Billion Ghost Seller, Citadel Just Cleared It

Bitcoin miner stocks have spent three weeks trading with a seller sitting on top of them. On Friday, Ken Griffin said that seller is nearly finished.

Griffin told Citadel clients the firm has unwound more than 80% of the risk it absorbed from Leopold Aschenbrenner's Situational Awareness portfolio. The filings behind that book show miner bets that grew in dollars while shrinking to under 10% of the portfolio. The fund was buying miners fast and memory chips faster.

The Seller Nobody Was Watching

Situational Awareness is the artificial intelligence (AI) fund run by former OpenAI researcher Aschenbrenner. It gained 439% in the first half of 2026. Then July arrived.

Leveraged four to one, the fund lost 67% in a single month and handed roughly $10 billion of stock to Citadel on July 30, as BeInCrypto reported when it lost its stock book.

Its last filing before that sale is the one that matters. The 13F, a quarterly holdings report large investors must file with regulators, covered the period to June 30 and was lodged on August 14. It listed a $20.24 billion portfolio across just 26 positions.

Bitcoin miners made up $1.99 billion of it. Core Scientific was the biggest at $666 million. Riot Platforms held $468 million, IREN $433 million and CleanSpark $179 million. A fresh $152 million stake sat in Keel Infrastructure, the company Bitfarms became after rebranding in April.