Bitcoin Magazine Abu Dhabi’s Mubadala Raises Bitcoin ETF Stake 16% to $566 Million in Q1 2026 Mubadala Investment Company boosted its stake in BlackRock’s iShares Bitcoin Trust by 16% in Q1 2026. This post Abu Dhabi’s Mubadala Raises Bitcoin ETF Stake 16% to $566 Million in Q1 2026 first appeared o