Bitcoin ETF outflows widen as Clarity bill stalls
Bitcoin (BTC)
Editor:
Eugene Serbin
Digitaltoday.co.kr reports that Bitcoin spot ETFs recorded a net outflow of $450.4 million on September 16, marking the largest single-day outflow since late June. This reversal followed a $159.9 million net inflow on September 15, according to Farside data. The outflows coincided with a decline in Bitcoin prices and the failure of the Clarity bill to advance in the U.S. Senate.
Fidelity's FBTC led the selling with $214.8 million in outflows, followed by $161.7 million from BlackRock's iShares Bitcoin Trust. Other products also saw withdrawals, including $44.1 million from Grayscale's GBTC, $17.4 million from the Ark-21Shares Bitcoin ETF, and $12.4 million from the Bitwise Bitcoin ETF. Bitcoin traded at $75,700, down 2.5 percent over the 24-hour period.
The market showed weakness as the flow flipped immediately from the previous day's inflows. Political factors weighed on sentiment as the Clarity bill stalled, shifting industry focus toward regulators. The figures indicate that ETF flows are reacting sensitively to price swings and policy uncertainty.
How the market reacted
Whalio's own Binance spot order flow for BTC, measured when this story was written up on 16 September 2026. Not the outlet's figures.
Whalio data shows Bitcoin trading at $75,644.48 with a 1-hour buy ratio of 60.9%, indicating strong short-term buying pressure. However, the 4-hour buy ratio is 50.9%, and the 24-hour buy ratio has dropped to 49.1%, suggesting that buying momentum is fading over the longer term. The 1-hour volume delta is positive at +$9,264,419, while the 24-hour volume delta is negative at -$29,201,019. This means that while recent trades show more buying than selling, the cumulative volume over the day shows net selling. The 24-hour cumulative volume delta (CVD) closed at -$20,313,848, confirming that sellers dominated the session. Spot volume reached $1,658,732,238 with 3,419,940 trades recorded.
The latest daily buy ratio of 46.7% sits at the 18th percentile of the last 322 days, against a median of 49.2% - weaker buying than most days.
Was that an ordinary day?
The same Binance spot measurements for BTC, averaged over the days leading up to the story.
Over the preceding week, the average buy ratio was 48.8%, making today's 24-hour ratio of 49.1% only 0.3 points higher than the average. Volume was 1.51 times the average, indicating an unusual level of activity compared to normal days. The price changed by -3.6% over the 8-day period, with a total volume delta of -$317,317,971. This week saw net buying on only 3 of the 7 days, showing a mixed trend. The current day's activity stands out due to the significantly higher volume relative to the weekly average.