Fidelity Surge Rescues Spot Bitcoin Funds After Midweek Slide

Fidelity Surge Rescues Spot Bitcoin Funds After Midweek Slide

2026-09-20 economy

New York, Sunday, 20 September 2026.
A massive late-week surge led by Fidelity brought $433 million into U.S. spot Bitcoin funds on September 18, narrowly saving weekly total flows from falling into negative territory.

Fidelity Surge Rescues Spot Bitcoin Funds After Midweek Slide

A massive late-week surge led by Fidelity brought $433 million into U.S. spot Bitcoin funds on September 18, narrowly saving weekly total flows from falling into negative territory [1][4][5]. Fidelity’s Wise Origin Bitcoin Fund (FBTC) accounted for $310.7 million of Friday’s overall $433 million net inflow, a notable sum that helped offset earlier withdrawals [1][5]. This single-day performance represented approximately 71.755 of the total daily inflow, highlighting a concentrated demand for the Fidelity product during the session [1][5]. The rebound was critical, as earlier withdrawals had threatened to push the week’s aggregate flows into negative territory [1][2].

Ether ETFs Halt Four-Week Inflow Streak

In contrast to Bitcoin, spot Ether funds snapped a four-week streak of positive net institutional inflows, signaling a potential shift in short-term asset allocation among corporate and institutional investors [1]. Spot Ether (ETH) ETFs saw a $140 million weekly outflow ending September 18, 2026, ending a four-week inflow streak that had accumulated $1.94 billion [1]. The streak broke due to $404.8 million in outflows between September 15 and September 17 [1]. BlackRock’s ETHA ended the week ending September 18 with $56.1 million in outflows, while Fidelity’s FETH lost $25.8 million [1]. As of September 18, 2026, Ether ETFs hold $922 million in net inflows for 2026 and $16.72 billion in net assets [1].

Weekly Volatility and Federal Reserve Context

The two-day recovery did not fully cover the midweek damage, leaving the weekly total nearly flat [2]. Thursday and Friday brought $592.5 million combined, against $746.3 million withdrawn on Tuesday and Wednesday, leaving a $153.8 million shortfall for that period [2][5]. For the five-session week ending September 18, 2026, net inflows totaled $6.1 million, with BlackRock’s IBIT leading weekly accumulation at $120.6 million versus FBTC’s $79.9 million [2][5]. The outflows landed September 15 and 16, around the Fed’s 25 basis point rate increase to 3.75% to 4.00% [2][5]. The data does not show the decision caused either the withdrawals or the rebound, but the timing coincides with the volatility [2].

Market Impact and Asset Levels

Bitcoin held above $80,000 over the weekend after rebounding from a turbulent week, supported by renewed institutional demand [4]. As of September 18, 2026, Bitcoin ETFs held $102.53 billion in assets, with cumulative inflows remaining near $55 billion after peaking at $63 billion [1]. Weekly trading volume for Bitcoin ETFs reached $16.17 billion, up from $8.77 billion the week of September 7, 2026 [1]. Friday’s $433.03 million ETF inflow offers a fresh sign that institutional buyers are returning after the cryptocurrency’s latest bout of volatility [4]. The next U.S. trading session is scheduled for September 21, 2026, to provide the subsequent spot-fund flow reading [6].

Sources


Digital Assets Bitcoin ETF