Spot Bitcoin ETFs have rallied to be powerhouse investment vehicles, accumulating 938,000 Bitcoin worth $63.3 billion in the first year of trading. That represents 4.5% of Bitcoin's total circulating supply, with wider crypto investment funds pushing the total to 1.1 million Bitcoin.

According to a report by Binance Research, the first Gold ETF that went live in 2005 drew in a then-record $1.5 billion in its first year. In contrast, Bitcoin ETFs have already captured more than $21 billion in inflows in just 10 months of action with unparalleled investor appetite.

Market leadership has consolidated among three players, BlackRock's IBIT, Grayscale's GBTC, and Fidelity's FBTC, who together hold 84% of the ETF market. BlackRock's offering has amassed the lion's share of new investments, underlining the firm's leading position in the space.

But most unexpectedly perhaps, it is retail investors that currently lead the charge, accounting for 80% of the money put into Bitcoin ETFs so far. Institutional participation is, however, gathering pace: well over 1,200 institutional investors are now on board, with big-name entrants including Goldman Sachs, Morgan Stanley, and the State of Wisconsin Investment Board.

Meanwhile, that success story hasn't played out for all cryptocurrency ETFs. Ethereum spot ETFs have failed to gain much traction, recording more than $103 million in outflows since their launch, with negative flows dominating eight of the 11 weeks of trading.