US Spot Ethereum ETFs Snap 5-Day Inflow Run With $70.62M Withdrawn

US-listed spot Ethereum exchange-traded funds (ETFs) posted net outflows of $70.62 million on Friday, breaking a five-session stretch of inflows, according to SoSoValue. The pullback follows a strong run from July 17 through Thursday, when the Ether ETF group took in $211.25 million across five sessions. Even after Friday's reversal, the products still ended the week with $103.9 million in net inflows. On a broader view, Ethereum spot ETFs have now logged net inflows for three consecutive weeks and have attracted $337.74 million in net inflows so far in July. Bitcoin spot ETFs also reversed course. After ending a seven-day inflow streak on Thursday, US spot Bitcoin ETFs recorded $240.08 million in net outflows on Friday. Still, the week ended Friday showed $103.90 million in net inflows, lifting July-to-date net inflows to $233.96 million and extending Bitcoin ETFs' weekly inflow streak to three straight weeks. Market pricing at the time of writing showed Bitcoin trading just under $64,000, down from Tuesday's weekly high of $66,892, while Ether was around $1,837 versus a weekly high of $1,954. Attention is also turning to Japan, where a recent overhaul of crypto regulations has renewed discussion about the potential scale of a future Japanese spot Bitcoin ETF market. Crypto management platform XWIN, in analysis referenced via CryptoQuant, estimated an upper-end "mature" market size of about $18.4 billion, framed as roughly 0.13% of Japan's reported $14.6 trillion in household financial assets. The estimate assumes demand could come from existing crypto holders, new retail investors accessing exposure through brokerage accounts, and institutional allocators. As a benchmark, the analysis pointed to the US market, noting that spot Bitcoin ETFs excluding Grayscale's GBTC have accumulated roughly 1 million Bitcoin over time. XWIN described the $18.4 billion projection as an achievable upper-end scenario rather than a guaranteed outcome, with investor access through familiar financial channels highlighted as the key variable. For markets, the near-term focus is whether Friday's outflows in both Ether and Bitcoin ETFs signal the start of a more durable pullback or simply a routine rebalancing pause. Subsequent daily flow data and the durability of weekly inflow streaks are likely to shape sentiment, while regulatory progress in Japan could influence longer-term expectations for where spot crypto ETF demand expands next.