Just a week ago, the picture looked very different. Spot Bitcoin ETFs had attracted about $754 million during the first week of August without recording a single day of net outflows, CoinDesk noted.
The latest fund-flow data from Farside Investors tracks daily flows across major U.S. spot Bitcoin ETFs, including BlackRock's IBIT, Fidelity's FBTC and products operated by Grayscale, Bitwise, Ark and others.
There were signs that traders were preparing for a pullback even before the latest decline.
Options activity last week showed investors increasingly buying protection around the $62,000 and $63,000 levels. Put options accounted for nearly 54% of Bitcoin options trading volume over a 24-hour period, while several of the most heavily traded contracts were puts around those strike prices, according to CoinDesk.
At the same time, Bitcoin has struggled to participate fully in rallies across other major assets.
Bitcoin's weakness also comes despite inflation data that failed to trigger the kind of rally some crypto investors had hoped for. Attention remains focused on the Federal Reserve and the direction of interest rates, with higher yields generally making non-yielding and riskier assets less attractive.
Technical conditions are adding another layer of uncertainty.
Bitcoin has struggled to establish a sustained move above the mid-$60,000 range, while the area around $60,000 to $62,000 has emerged as an increasingly important test for buyers. A decisive move below that zone could intensify selling, while a recovery above recent resistance levels would help weaken the bearish setup.
The bigger question, however, is whether institutional money returns.
Spot ETFs have transformed the structure of the Bitcoin market by giving traditional investors an easier way to gain exposure to the cryptocurrency. That also means daily ETF flows are now closely watched for evidence of whether large investors are buying into declines or heading for the exits.