FTX has sold about $600 million worth of Grayscale Bitcoin ETF shares, reducing its holding from 22 million shares. This move follows Grayscale's conversion to a bitcoin ETF and the SEC's approval of spot bitcoin ETFs. The sale contributes to Grayscale's recent $2.2 billion net outflows, contrasting with rivals BlackRock and Fidelity's rising crypto inflows. FTX's sale aligns with the court's November authorization to liquidate assets.