Spot bitcoin ETFs recorded US$332.7 million in net inflows on September 2, 2025, reversing the previous trend of higher inflows into Ethereum ETFs.

Data from SoSoValue shows that Fidelity’s FBTC led with US$132.7 million in inflows, followed by BlackRock’s IBIT at US$72.8 million.

Other funds, including those from Grayscale, Ark & 21Shares, Bitwise, VanEck, and Invesco, also saw inflows.

In contrast, spot Ethereum ETFs posted US$135.3 million in net outflows, with Fidelity’s FETH seeing US$99.2 million withdrawn and Bitwise’s ETHW losing US$24.2 million.

🔗 Source: The Block

🧠 Food for thought

1️⃣ Institutional crypto flows show rapid rotational behavior between major assets

The dramatic reversal in ETF flows demonstrates how quickly institutional sentiment can shift between Bitcoin and Ethereum.

Just one month ago in August, Ethereum ETFs dominated with $3.87 billion in net inflows while Bitcoin ETFs experienced $751 million in outflows1.

Yet a single trading day in September saw this pattern completely flip, with Bitcoin attracting $332.7 million while Ethereum faced $135.3 million in outflows1.

This rapid rotation suggests institutional investors view Bitcoin and Ethereum as distinct positions in their portfolios that can be adjusted based on market conditions.

The speed of this reversal—from Ethereum dominance to Bitcoin preference within weeks—indicates that large institutional players are actively managing their crypto allocations based on changing market conditions rather than holding static long-term positions.

2️⃣ Macroeconomic uncertainty drives flight to Bitcoin’s perceived stability

The shift toward Bitcoin reflects a classic institutional response to uncertainty, with Bitcoin positioned as the more stable crypto asset during volatile periods.

According to LVRG Research, institutional investors are “rebalancing portfolios to capitalize on Bitcoin’s perceived stability amid macroeconomic uncertainties”1.

This behavior mirrors traditional finance patterns where investors move toward perceived safe havens during uncertain times.