Bitcoin has experienced a compounded 3.24% decline during US stock-market trading hours between Sept. 21 and Oct. 7, while price levels outside American trading hours advanced 6.07%, according to an analysis of Binance BTC/USDT trading data. Over this same timeframe, CryptoQuant's Coinbase Premium Gap plunged to -$64, signaling weaker buying demand or heavier spot selling on the American exchange.
Key Takeaways
- Bitcoin fell during 8 of the 13 Wall Street cash sessions held between Sept. 21 and Oct. 7.
- Two sessions—Sept. 30 (down 1.86%) and Oct. 2 (down 2.65%)—drove the vast majority of the cumulative session loss.
- CryptoQuant's Coinbase Premium Gap sank to -$64, reflecting persistent discount pricing on Coinbase relative to Binance.
- US spot Bitcoin ETFs posted divergent activity: $148.7 million in net outflows on Sept. 30, $189.9 million in net inflows on Oct. 2, and $484.9 million in withdrawals on Oct. 7.
Two Sessions Drive Cumulative Wall Street Decline
On-chain analytics firm Glassnode noted that American trading hours have turned into a source of price pressure. However, detailed trading data indicates that losses were heavily concentrated in just two trading sessions. During the standard 9:30 a.m. to 4 p.m. New York window across 13 cash sessions, removing the sharp declines on Sept. 30 and Oct. 2 leaves the remaining 11 sessions with a compounded 1.28% gain.
Shifting the start of the trading window changes the figures. Moving the start time to 9 a.m. produces a compounded 4.94% loss (0.16% decline excluding those two dates), while starting at 10 a.m. yields a 5.41% drop (1.68% loss without those two dates). Coinbase spot USD data displays a matching trend, dropping 4.85% between 9 a.m. and 4 p.m. and 5.36% from 10 a.m. to 4 p.m., which aligns with recent broader patterns as capital inflows slow across Bitcoin markets.
ETF Flows Offer Mixed Signals on Institutional Selling
Spot ETF metrics present a complex picture that challenges simple claims of continuous institutional dumping. While Sept. 30 registered $148.7 million in net spot ETF outflows alongside a 1.86% price decline, Oct. 2 saw the funds attract $189.9 million in net inflows even as Bitcoin fell 2.65% during Wall Street hours.
Net withdrawals subsequently grew to $484.9 million on Oct. 7. However, regulatory changes enacted in 2025 allowing in-kind creations and redemptions mean ETF redemptions can involve transferring underlying Bitcoin rather than executing immediate market sales on spot exchanges like Coinbase Prime, which frequently handles large institutional movements like government seized crypto transfers.
Why It Matters
The deepening Coinbase discount indicates genuine spot selling pressure during US market hours, but blaming ETF redemptions alone oversimplifies market mechanics. Derivatives positioning, market maker inventory adjustments, or off-exchange liquidity desks may be driving the intra-day softness. If the negative Coinbase Premium Gap persists alongside sustained ETF outflows, it will confirm a structural drop in American spot demand; conversely, a rebound in US-session returns without ETF inflows would point directly to derivatives desks and market makers as the key market drivers.
