iShares Bitcoin Trust (IBIT)

The iShares Bitcoin Trust (IBIT) shattered records by amassing $40 billion in AUM within its first year — the fastest growth of any ETF ever, outpacing #2 VOO's launch pace by a factor of three. Managed by BlackRock and launched in January 2024 after SEC approval, it became the quickest ETF to hit $10 billion, achieving this milestone in just 48 trading days. This crypto-focused fund holds Bitcoin directly, with a 0.25% expense ratio that is 60% cheaper than the average Bitcoin futures ETF. Since inception, IBIT has delivered a 42% gain, eclipsing the 6.8% return of #1 SPY over the same period, though with significantly higher volatility.