US-listed Bitcoin ETFs attracted $986.9 million in net inflows for the week ending September 4, a 6.7% increase from the prior week, according to CoinGlass data.

Over the same five trading days, inflows into Ethereum, Solana, XRP, and Hyperliquid ETF products fell between 73% and 96%. The divergence reverses the pattern of the week before, when altcoin funds posted triple-digit percentage gains.

US spot $BTC ETFs just printed their biggest inflow day since January. On September 3, the funds pulled in roughly $731 million. BlackRock's IBIT accounted for $454 million of that. And then the buying kept coming. $3.8 billion flowed into spot Bitcoin ETFs over the last… pic.twitter.com/aGSb7bpUeW — The Wolf Of All Streets (@scottmelker) September 6, 2026

The tension in the current market is clear: Bitcoin ETF demand is climbing again just as overall market participation is cooling, and neither trend has yet been tested by the macro data still on the calendar. The pattern underscores the outsized role these funds have played since US regulators approved spot Bitcoin ETFs in January 2024, opening crypto exposure to brokerage accounts and wealth-management channels that previously lacked direct access.

Bitcoin itself gained 2.58% over the five-day stretch, opening Friday at its highest level since May 12. Whether that combination of price strength and inflow strength survives next week's inflation print remains an open question.

From an Altcoin Surge to a BTC Rebound

The prior week told the opposite story. For the week ending August 28, Bitcoin ETFs took in $924.5 million, roughly half of the $1.92 billion collected the week before that, according to SoSoValue.

Altcoin ETFs, meanwhile, were having their moment: Solana products jumped 443% to $153.9 million, XRP funds rose 178% to $110.5 million, and Hyperliquid funds reached $56.9 million.

That momentum evaporated within five trading days. Solana ETFs pulled in just $6.2 million, XRP funds took in $19 million, and Hyperliquid funds collected $12.3 million. The whiplash is a reminder that altcoin ETF complexes are still young and thinly scaled relative to Bitcoin's, so weekly percentage swings in their flows tend to be far more volatile.

Crucially, SoSoValue's data shows none of the five product groups slipped into negative territory. That distinction matters: this is a story about slower buying, not investors pulling capital back out of altcoin ETFs.

The Macro Backdrop Cuts Both Ways

Trading activity declined overall despite rising Bitcoin ETF inflows. Bitcoin fund turnover fell to $14.5 billion from nearly $19 billion, while Ethereum ETF turnover dropped to $4.1 billion, indicating that conviction is consolidating into fewer trades.

Mixed macro signals emerged during the week. Bitcoin reached its highest price since May 12 after dovish comments from Federal Reserve Governor Christopher Waller. However, a strong August employment report showing 162,000 payrolls, well above the 53,000 forecast, prompted traders to increase bets on a potential Fed rate hike, contradicting the earlier dovish tone. The crosscurrent matters for crypto markets because rate expectations influence the liquidity environment that has historically shaped demand for risk assets like Bitcoin.

Farside Investors reported that US spot Bitcoin ETFs attracted $986.7 million in inflows, with BlackRock's IBIT leading. The consistent totals from different trackers lend credibility to the headline figures, although some fund-level numbers remain unconfirmed.

Bitcoin Ahead, Altcoins Flat: The Flow-vs-Price Split

Spot prices remained tight across all five assets despite the divergence in flows, which is notable in itself. BTC gained 2.58% over the five days to September 4. Ethereum rose 1%, XRP added 3%, and Hyperliquid gained 5.7%. Solana trailed the group with a 0.2% move, and its fund assets slipped to $1.41 billion from $1.43 billion over the same stretch.

The asymmetry stands out: Hyperliquid posted the strongest five-day price gain of the group at 5.7%, yet its ETF inflows fell to $12.3 million from $56.9 million in the prior week.

Price performance and fund-flow momentum decoupled almost entirely across all altcoin categories, suggesting traders are taking profits or simply pausing new allocations rather than executing a coordinated rotation out of these assets.

Altcoin ETFs Show Deceleration, Not Retreat

All four altcoin product groups experienced a sharp reversal from the previous week's gains. Solana's 443% surge decreased to $6.2 million in fresh inflows, XRP's 178% jump fell to $19 million, and Hyperliquid's growth shrank to $12.3 million from $56.9 million.

Despite this, SoSoValue's data indicates that all tracked groups, including Bitcoin, remained net positive for the week. The slowdown coincides with a broader decline in trading activity rather than a mass exit from altcoins, distinguishing it from a liquidation event.

For context, a recent stretch of daily gains in Bitcoin and Ethereum ETFs shows how quickly inflow trends can shift. Additionally, Ethereum's slower momentum is linked to new investment products, such as 21Shares' staking ETP, which provide alternative exposure to ETH. With the next inflation print ahead, weekly flow data from trackers like CoinGlass, SoSoValue, and Farside will offer the clearest signal of whether Bitcoin's inflow advantage holds or the altcoin rebound resumes.