BREAKING
Bitcoin spot ETFs recorded a net outflow of 5,353 BTC ($405.45M) on September 16, according to data published by Lookonchain. That single-session exit pushed the rolling seven-day deficit to 9,908 BTC ($750.42M) — the largest weekly hole seen in recent weeks and a signal that institutional redemption pressure is not letting up.
At the time of writing, Bitcoin is trading at approximately $75,829, down 0.91% over the past 24 hours.
Key Highlights
- Bitcoin ETF daily outflow: 5,353 BTC / $405.45M on September 16
- Bitcoin ETF 7-day outflow: 9,908 BTC / $750.42M — sustained institutional selling
- Ethereum ETF daily outflow: 51,443 ETH / $123.48M — reverses 7-day inflow streak
- Ethereum ETF 7-day net: +34,334 ETH / +$82.42M — still green on the week despite Tuesday’s hit
Bitcoin ETF Flow Breakdown — September 16
The daily read of −$405.45M is not an isolated spike. Placed against the seven-day cumulative of −$750.42M, the data shows that Tuesday’s session alone accounted for 54.0% of the entire week’s outflow — a CoinsProbe-computed ratio that flags Tuesday as the single heaviest redemption session in this seven-day window.
Expressed differently: the market exited 5,353 BTC through ETF wrappers in a single trading day, at a pace of roughly 223 BTC per hour across the standard session. The seven-day total of 9,908 BTC represents approximately 0.047% of Bitcoin’s circulating supply being unwound from spot ETF custody in one week — a structurally meaningful quantity when viewed against average daily volumes.
| Metric | BTC | USD |
|---|---|---|
| 1D Net Outflow (Sept 16) | −5,353 BTC | −$405.45M |
| 7D Net Outflow | −9,908 BTC | −$750.42M |
| 1D Share of 7D Total | 54.0% | 54.0% |
| Implied Daily Avg (7D) | −1,415 BTC/day | −$107.2M/day |
Source: Lookonchain | Ratios computed by CoinsProbe
The implied seven-day daily average of −1,415 BTC ($107.2M) per day means Tuesday’s session ran at 3.8× the weekly average pace — a clear acceleration, not a continuation of a steady bleed.
For historical context on Bitcoin ETF flow dynamics, see our earlier coverage: Bitcoin ETFs Pull $147.42M in One Day — But 7-Day Hole Deepens to -$336.16M as ETH Funds Post $95.44M. Also relevant: Morgan Stanley’s MSBT ETF Pulls 487.13 BTC ($38.45M) in Seven Days via Coinbase Prime.
Ethereum ETF Flow — A Split Signal
Ethereum ETFs present a more nuanced read. The daily outflow of 51,443 ETH ($123.48M) on September 16 is steep in isolation — but it sits against a seven-day net that remains in positive territory at +34,334 ETH (+$82.42M).
| Metric | ETH | USD |
|---|---|---|
| 1D Net Outflow (Sept 16) | −51,443 ETH | −$123.48M |
| 7D Net Inflow | +34,334 ETH | +$82.42M |
| Net 7D Position (after Tuesday) | Positive | +$82.42M |
Source: Lookonchain | CoinsProbe
What this arithmetic confirms: Tuesday’s Ethereum ETF outflow of $123.48M exceeded the entire seven-day net inflow of $82.42M by $41.06M on a gross basis — yet the seven-day figure still shows a net positive because prior sessions in the window absorbed significant inflows before Tuesday’s reversal hit.
The CoinsProbe-computed gross swing: prior to September 16, the six preceding sessions generated approximately +$205.9M in ETH ETF inflows (implied: $82.42M net + $123.48M to offset). Tuesday erased 60% of that six-session accumulation in a single day.
What the Data Confirms — And What It Doesn’t
What it confirms: Institutional holders redeemed Bitcoin ETF shares at an accelerated pace on September 16 — 3.8× the weekly average daily rate. The seven-day deficit of $750.42M is a net figure, meaning gross outflows exceeded gross inflows by that amount over the full week.
What it doesn’t confirm: Whether the acceleration reflects macro-driven risk-off repositioning, fund-specific rebalancing, or a structural shift in institutional ETF demand. Fund-level breakdowns (by issuer) were not available in this data snapshot.
What to watch: Whether Wednesday’s session shows a mean-reversion toward the −$107M/day implied average, or sustains Tuesday’s elevated exit pace. A third consecutive daily outflow above $300M would extend the streak into territory not seen since the early-2024 post-approval adjustment period.
For additional institutional flow context, see: Morgan Stanley’s MSBT ETF Adds 123.21 BTC ($9.33M) via Coinbase Prime.
Bottom Line
Bitcoin ETFs have now bled 9,908 BTC ($750.42M) across seven days, with Tuesday’s 5,353 BTC ($405.45M) single-session outflow representing 54.0% of that weekly total — running at 3.8× the implied daily average. Ethereum ETFs posted a sharp $123.48M daily exit but retain a positive seven-day net of +$82.42M, a split signal that separates ETH’s weekly narrative from Bitcoin’s. Watch whether the Bitcoin ETF seven-day deficit expands beyond $900M — that level would mark the deepest weekly redemption window of the current cycle.
Source: t.me/lookonchainFrequently Asked Questions
How large was the Bitcoin ETF outflow on September 16, 2026?
What does the 7-day Bitcoin ETF outflow of $750.42M signal?
Are Ethereum ETFs also seeing sustained outflows?
What level would mark the deepest Bitcoin ETF weekly outflow of this cycle?
Source: Lookonchain · Published by CoinsProbe Markets Desk