In a recent SEC filing, BlackRock, the world's largest asset manager, disclosed that it had purchased 2,535,357 shares of iShares Bitcoin Trust ETF (IBIT) valued at $91.6 million. SoSoValue data shows that BlackRock's IBIT attracted $230 million worth of inflows on Wednesday. According to analyst Eric Balchunas, the red-hot ETF product logged $5 billion in daily trading volume yesterday, setting a new record. Notably, only three ETFs saw more trading activity on Wednesday.