Market SitRep · CW37 2026 · Thursday
The door reopened after Labor Day, and it came back red.
by Fenris | Market Intelligence
GM!
Market snapshot (live vs ~7d, as-of 10 September 2026, 07:41 UTC):
Spot BTC ETFs: red Tuesday, redder Wednesday
Monday had followed a fat Thursday at +$730.8M, then a thinner Friday at +$174.6M, straight into the long weekend of Labor Day in the US.
US spot bitcoin ETFs - the funds that hold real BTC - printed -$46.6M on Tuesday 8 September. Grayscale's GBTC did most of the damage at -$65.5M. Wednesday 9 September printed -$120.2M, ARK's ARKB at -$78.0M. Thursday's book is still open.
| Date | IBIT | ARKB | GBTC | Total |
|---|---|---|---|---|
| 8 September | +$10.7M | +$8.1M | -$65.5M | -$46.6M |
| 9 September | -$19.5M | -$78.0M | -$27.2M | -$120.2M |
Farside - US spot BTC ETF daily flows. Total = all spot funds; IBIT, ARKB and GBTC sit inside that Total.
Important to see: Two red sessions after that fat Thursday is a fade.
This is mixed.
Sources
Liquid leaked. Then they froze the gate.
Liquid is Blockstream's federated Bitcoin sidechain. L-BTC is meant to match bitcoin held by the federation.
On 6 September, about 3,996 BTC came off that peg. Reserves fell from 4,205 to 202 BTC, about $320M at then-prices. The attacker sent back 3,400 BTC and kept 598.5 BTC (~$47M) as a self-bounty. The network halted at 04:49 UTC on 7 September.
Blockstream, via crypto.news and Bloomberg on 8 September, said federation keys were untouched. They blamed a range-proof cache bug in Elements, the software Liquid runs on.
The booth kept printing extra tickets. Then they locked the gate.
Why it matters: L-BTC holders need that peg to hold. This sat on Liquid.
This is ugly for Liquid.
We will keep eyes on what Blockstream publishes next.
Sources
Conclusion
From these points we conclude:
ETF bounce cooled
Spot BTC ETFs printed two red sessions after Monday's fat Thursday.
Liquid froze the gate
A cache bug on Blockstream's Liquid sidechain printed a huge peg-out; press say most coins came back.
GM.
Software and engineering services. Not financial, tax, or investment advice.