What happened: a fourth straight outflow day into the Fed

US spot Bitcoin ETFs bled again on July 28, 2026, posting about $49.75 million in net outflows — a fourth consecutive session of redemptions — as trading desks trimmed exposure ahead of today's Federal Reserve decision, per The Cryptonomist. The selling caps a rough week that began with heavier redemptions of roughly $225.1M on July 23 and $240.1M on July 24 (a combined $465M-plus, per Crypto Times), followed by a smaller $11.64M exit on July 27.

Over the seven days ending July 28, the category shed about 3,170 BTC (~$200.23M), and the damage was concentrated in one fund: BlackRock's IBIT lost roughly 3,511 BTC — more than the entire group's net decline — while Fidelity's FBTC added ~109 BTC and ARK 21Shares' ARKB added ~77 BTC, according to Yahoo Finance.

Ether funds went the other way. Spot Ethereum ETFs took in about $9.23 million on July 28, led by BlackRock's ETHA, extending a run that Yahoo Finance and CoinGabbar call a third straight week of net ETH inflows (~37,959 ETH, ~$71.17M for the week). We flagged that same split last week in Ether ETFs outnet Bitcoin.

The macro trigger: a coin-flip Fed print

The flows aren't happening in a vacuum. Bitcoin fell as much as ~3% to about $63,100 on July 28 — an 11-day low — as traders priced in roughly a one-in-three chance of a surprise rate hike at the July 28-29 FOMC meeting, whose decision lands today, per Coinspeaker. Consensus still expects the Fed to hold at 3.50%-3.75%, but the tail risk was enough to push desks to the sidelines. BTC was quoted near $63,929 early on July 29 (CoinStats).

This is where ETF plumbing matters. Redemptions don't require conviction that Bitcoin is going lower — they can simply reflect authorized participants (APs) and market makers flattening inventory before a binary event they can't hedge cheaply. Creation/redemption baskets settle in cash for these funds, so a desk that wants to be flat into a 2:00 p.m. ET decision hands back shares the morning before, and the net-flow print turns red even if underlying demand is intact. That mechanical de-risking is why outflows tend to cluster in the sessions immediately ahead of an FOMC decision rather than after it.

What it means for investors

Read this streak as positioning, not a verdict. Four straight red sessions looks like capitulation, but the timing — into a coin-flip Fed print — argues it's inventory management. A `hold` at 3.50%-3.75% removes the tail risk that drove the de-risking, and the same APs that redeemed can re-create baskets fast; the tell would be the pre-market open the morning after the decision, when the first creation orders reset the tape. For how that window trades, see our pre-market ETF strategy note.

The category number is really an IBIT number. With BlackRock's fund accounting for more than the entire group's weekly BTC decline, a single desk's redemption can set the headline "Bitcoin ETF outflow" figure — the same concentration dynamic that made IBIT's inflow streak snap a category-wide event. Watch IBIT's daily creations, not just the aggregate, to know whether flows have actually turned.

The BTC/ETH split is a rotation, but a narrow one. Ether funds netting positive for a third week while Bitcoin bleeds is a real divergence, yet it runs almost entirely through ETHA — so it's an allocation shift concentrated in one issuer, not broad institutional conviction in ETH over BTC. If the Fed surprises hawkish, expect both sides to see redemptions at the open regardless of the recent split.

Mind NAV versus price on a volatile macro day. When a decision hits mid-session, an ETF's last trade can drift from its intraday indicative value before creations arbitrage the gap — the premium/discount mechanics that govern how these funds price get noisier precisely when you're most tempted to trade them. On Fed days, the flow print is a lagging read on yesterday's positioning; the price and the spread are the live signal.

Bottom line: the four-day Bitcoin-ETF outflow streak is best understood as desks flattening into a genuinely uncertain Fed decision, amplified by IBIT's outsized weight. The signal to watch isn't the red weekly total — it's whether creations resume at tomorrow's open once the FOMC uncertainty clears.