【The fund-flow seesaw effect | BTC ETFs see $110 million in net inflows in a single day, while ETH ETFs simultaneously record $88.6 million in net outflows: BlackRock buys the Bitcoin dip with one hand and trims its Ethereum holdings with the other】
Yesterday’s U.S. spot ETF data: Bitcoin ETFs saw $110 million in net inflows, all of which went to BlackRock’s IBIT; Ethereum ETFs recorded $88.6 million in net outflows, with BlackRock’s ETHA alone seeing $104.7 million in outflows, while Fidelity’s FETH bucked the trend with $16.1 million in inflows.
The portfolio adjustments by major asset managers are widening the divergence in fund flows between the two leading crypto assets. A deep dive 👇
I. The essence of the divergence: Defensive institutional rebalancing lifts the premium on leading assets with greater certainty

Behind the seesaw of buying one and selling the other is a temporary decline in institutional risk appetite:

• BTC: Funds are heavily concentrated in the largest issuer, as institutions continue to increase their exposure to crypto’s core store-of-value asset, prioritizing certainty amid macroeconomic uncertainty;

• ETH: BlackRock’s large-scale selling reflects a temporary reduction in exposure to growth- and ecosystem-oriented assets, avoiding volatility risks tied to ecosystem narratives and applications falling short of expectations.
Overall, the shift is from “balanced allocation” toward “concentrating in core leaders,” further reinforcing BTC’s role as an anchor among crypto assets.

II. Signals in the details: The industry is not uniformly bearish on ETH

The outflows do not reflect an industry-wide consensus; there is a clear divergence among issuers:
BlackRock’s outflows alone exceeded the total net outflows from ETH ETFs, while other firms, including Fidelity, actually increased their holdings against the trend. This suggests that asset managers differ in their views on ETH’s valuation and position in the cycle. It is not a sector-wide flight of capital, but rather an adjustment to the portfolio allocations of major institutions.

III. The cycle perspective: One day of volatility does not alter the long-term growth trend

Daily flows reflect short-term portfolio adjustments. Over a longer horizon, spot BTC and ETH ETFs remain in an overall trend of sustained net inflows.
The volume of incremental capital entering through regulated ETF channels continues to grow. Short-term sector rotation is normal and does not signal a reversal in the long-term investment case for either of these two major assets.