Bitcoin ETFs Add $324.6M As Fidelity Dominates Friday Flows

U.S. spot Bitcoin exchange‑traded funds (ETFs) saw a net inflow of $324.6 million on September 18, according to data from Farside Investors. The surge was driven almost entirely by Fidelity’s Wise Origin Bitcoin Fund (FBTC), which attracted $310.7 million, roughly 96 % of the total flow.

Breakdown of inflows by fund

• Fidelity (FBTC): $310.7 million
• Bitwise (BITB): $9.7 million
• ARKB: $1.9 million
• VanEck (HODL): $2.3 million
• BlackRock (IBIT): flat (no net flow)

Context of recent activity

Earlier in the week the sector experienced sizable outflows, with a combined $450.4 million withdrawn on September 15 and $295.9 million on September 16. A modest inflow of $159.5 million on September 17 marked the start of a rebound that continued on Friday.

Interpretation of the pattern

The concentration of inflows in a single fund highlights the episodic nature of Bitcoin ETF demand. Large institutional allocations tend to arrive in bursts, causing rapid swings between outflows and inflows across different issuers. While Friday’s total inflow is notable, it reflects a single trading day rather than a sustained shift in market sentiment.

Implications

The data suggests that demand for Bitcoin ETFs remains active and can quickly rebound after periods of selling, with Fidelity currently playing a central role in the latest inflow.