TL;DR. Spot ether ETFs printed a tenth consecutive day of net outflows on Friday, the longest losing streak for the category since March 2025, and spot bitcoin ETFs shed roughly $1.26 billion across the week, their worst showing since late January. The ETH/BTC ratio sank to about 0.0283, a fresh ten-month low. Heading into a holiday-thinned Memorial Day weekend, traders should expect thinner order books, sharper reactions to headlines, and a market still skewed toward the bitcoin-over-ether allocation trade.

TL;DR

  • Spot ether ETFs logged 10 straight days of net outflows, erasing roughly $254 million from the sector, per The Block.
  • Spot bitcoin ETFs lost about $1.26 billion on the week, the heaviest weekly outflow since late January.
  • ETH/BTC fell to ~0.0283, a ten-month low, with ether down roughly 35% versus bitcoin from its August 2025 peak near 0.0432.
  • JPMorgan flagged on May 19 that ether's underperformance looks structural, not tactical, until network activity, DeFi usage, and real-world asset adoption pick up materially.
  • The newly reintroduced ARMA bill rewrote the U.S. Strategic Bitcoin Reserve framework with a 20-year lockup and a budget-neutral acquisition path, replacing the earlier hard 1 million BTC target.

What just changed in the ether ETF flow picture

According to The Block, U.S. spot ether ETFs registered a tenth consecutive day of net outflows on Friday, with about $6.6 million leaving the complex on the day. BlackRock's ETHA accounted for roughly $5.6 million of that, while Fidelity's FETH saw about $1 million pulled. Bloomingbit noted the streak now stands as the longest negative run for spot ether ETFs since March 2025.

On the weekly tape, spot ether funds bled around $254 million across five straight red sessions. Spot bitcoin ETFs were no relief valve. They printed roughly $1.26 billion in net outflows on the week, the heaviest single-week withdrawal since the late-January risk-off episode that followed the prior reserve-policy headlines. We mapped the bitcoin side of this rotation in detail in our Bitcoin Risk Map after IBIT's $1.15B outflow week. Importantly, ether's drawdown happened against a backdrop where bitcoin itself was already under institutional selling pressure, so the cross-asset signal is not a simple "rotation into BTC." It is broad de-risking in crypto beta with a clearly heavier hand on ether.

ETH/BTC at a ten-month low: what the ratio is saying

The ETH/BTC ratio is one of the cleanest read-throughs for relative positioning in crypto. CoinDesk's May 12 piece flagged the ratio breaking to a ten-month low at 0.02835, and follow-up coverage shows it has stayed pinned in that zone into the weekend. That marks ether down roughly 35% against bitcoin from its August 2025 high near 0.04324.

For traders unfamiliar with the metric, ETH/BTC simply measures one ether priced in bitcoin. When the ratio falls, ether is underperforming bitcoin even if both are rising in dollar terms. A multi-month structural low in this ratio, combined with persistent ETF outflows, tells you institutional capital is favoring bitcoin as its preferred crypto beta.

JPMorgan put numbers and reasoning behind the move in a May 19 research note, arguing that ether is unlikely to reverse its multi-year underperformance against bitcoin without measurable improvements in network activity, DeFi adoption, and real-world asset settlement on mainnet. That framing matters because it ties the flow story to a structural thesis, not a one-off positioning unwind.

The bitcoin side: ETF outflows, price perched near $77K

Bitcoin itself is not enjoying the divergence. BTC is trading near $77,000 into the U.S. close, with classical pivot support clustered at $74,743, then $73,924, and stronger support at $72,357. Resistance sits near $76,900 to $79,800. With $1.26 billion exiting spot bitcoin ETFs this week, the supportive flow story that anchored prior dips has thinned out.

This matters for the weekend setup. When ETFs are net buyers, weekend dips into Sunday Asia open often get absorbed by Monday morning creations. When they are net sellers, the marginal bid disappears between Friday's U.S. close and Monday's primary-market open, which historically widens spreads and exaggerates moves on lower volume.

Policy backdrop: the ARMA rewrite changes the BTC narrative tone

The strategic bitcoin reserve story also evolved this week. The newly introduced American Reserve Modernization Act of 2026 (ARMA), led by Rep. Nick Begich (R-Alaska) with Rep. Jared Golden (D-Maine), rewrote earlier reserve proposals. The bill mandates a 20-year lockup on any bitcoin entering the reserve, blocking sales, swaps, and auctions across that window. It drops the previous hard 1 million BTC target and instead directs Treasury and Commerce to study budget-neutral acquisition paths, including gold certificate revaluations, forfeiture proceeds, tariff revenues, and state partnerships.

For active crypto traders, the takeaway is nuanced. The watered-down acquisition target removes a potential mechanical-bid story that bulls were pricing in. (We unpacked the original framing in our piece on the ARMA bill's earlier 1 million BTC reserve target.) The 20-year lockup, however, is the most explicit signal yet that any BTC the U.S. acquires would be permanently absorbed off liquid float. That is a slow-burn supply story, not a fast catalyst, so it offers limited near-term support against this week's ETF selling.

Potential positives vs negatives

Potential positives

  • Holiday-thinned tape into Memorial Day can squeeze short positioning if a constructive macro headline lands. Reports of a 60-day U.S.-Iran ceasefire framework with gradual Hormuz reopening would be one example of an unexpected risk-on jolt.
  • Bitcoin dominance remains constructive, which historically benefits BTC-first allocations even when crypto beta cools.
  • The ARMA bill's lockup language sets a long-duration supply absorption narrative that could re-emerge into year-end if any acquisition path is operationalized.
  • Extreme weekly outflow weeks have, in past cycles, marked short-term capitulation lows, so flow exhaustion itself can become a setup.

Potential negatives

  • Ether's 10-day outflow streak plus ETH/BTC at multi-month lows suggests persistent institutional preference away from ether, with no clear catalyst to reverse it.
  • The $1.26 billion weekly BTC ETF outflow removes the marginal bid that often defended weekend dips.
  • Thinner weekend liquidity raises tail risk in both directions, with overnight gaps possible into Monday's open.
  • JPMorgan's structural framing for ether weakness limits the appeal of mean-reversion ETH/BTC trades unless network metrics inflect.

What could happen from here

Base case

Range trade extends into next week. Bitcoin oscillates between $74,743 support and the $76,900 to $79,800 resistance pocket while ETF flows stabilize but do not yet flip net positive. ETH/BTC chops near 0.028 to 0.029 with limited follow-through in either direction. Confirms with: flat to modestly negative ETF prints on Monday, plus stable funding on perpetuals.

Upside case

Constructive macro or policy headlines, such as a confirmed U.S.-Iran ceasefire extension or softer Fed rhetoric from Chair Warsh into next week, prompt a relief bid. BTC reclaims $79,800 with renewed ETF inflows, and ETH/BTC bounces back above 0.030 as short-covering in ether ETFs unwinds positioning. Confirms with: a net-inflow day across BTC and ETH ETFs, plus a daily close above 0.030 on the ETH/BTC ratio.

Downside case

Weekend headline risk or weak Asia open accelerates the de-risking. Bitcoin breaks $74,743 and tests $72,357. Ether's outflow streak extends to 11 or more sessions, and ETH/BTC presses toward 0.027 or lower as JPMorgan's structural thesis bites harder. Invalidated by: a sharp single-day ETF inflow reversal of more than $500 million across BTC funds, or a clean reclaim of $76,900 on BTC with rising spot volume.

What traders should watch next

  • Monday ETF flows. The first BTC and ETH spot ETF prints after a heavy outflow week often set the tone for the following five sessions.
  • ETH/BTC at 0.0283. Daily closes below 0.028 would extend the structural underperformance; a reclaim of 0.030 would be the first sign positioning is unwinding.
  • BTC pivot levels. $74,743 and $73,924 as first-line support; $76,900 to $79,800 as resistance.
  • U.S.-Iran ceasefire updates. Confirmed extension language could shift overall risk sentiment, dragging crypto beta with it.
  • ARMA bill movement. Any committee scheduling or markup news on the strategic bitcoin reserve framework could reintroduce a slow-burn bid narrative.
  • Funding and basis. Watch perpetual funding rates and CME basis. Sharp shifts after thin weekend liquidity can foreshadow Monday positioning resets.

How active traders can prepare

For active traders, the practical playbook is to avoid forcing trades into thin weekend liquidity, define invalidation levels before the Asia open, and respect that mean-reversion in ether against bitcoin currently lacks a fundamental catalyst. When tested on chartdojo.io, traders who logged each weekend trade with explicit invalidation levels and reviewed their reasoning the following Monday consistently caught their own pattern of over-trading into illiquid sessions. That review loop is more valuable than any single chart pattern in a tape like this.

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Sources

This article is for educational and informational purposes only and is not financial advice. Always do your own research and consider your risk tolerance before trading.

Header image source: pexels by David McBee. License: PEXELS.