Pre-market 2026-09-21: the chain vs the open
How far each US stock and ETF perp on Hyperliquid's EntropyIO (io) deployer moved on-chain between the 2026-09-18 close and 04:00 and 09:00 ET on 2026-09-21, and whether the real opening gap went the same way.
| market | class | 04:00 call | 09:00 call | high / low | path · close → 09:30 | real gap | right before · ±0.10% | volume |
|---|---|---|---|---|---|---|---|---|
| EWYus etf | us etf | +2.48%✓ · 11m old | +3.80%✓ · 10m old | +3.90% / -0.50% | +2.62% | 09:00 n=0 (<15)04:00 n=0 (<15) | $150k | |
| IONQus equity | us equity | +1.64%✓ · 28m old | +2.36%✓ | +3.67% / -0.92% | +2.45% | 09:00 n=4 (<15)04:00 n=5 (<15) | $152k | |
| SNDKus equity | us equity | +0.80%✓ | +1.23%✓ | +2.48% / -2.25% | +1.26% | 09:00 81% of 1604:00 93% of 15 | $27.0M | |
| NBISus equity | us equity | +1.88%✓ | +0.93%✓ | +2.76% / -2.28% | +0.17% | 09:00 n=13 (<15)04:00 n=12 (<15) | $3.8M | |
| GPROus equity | us equity | -0.80%✗ · 11m old | +0.01%· | +1.12% / -2.99% | +0.19% | 09:00 n=11 (<15)04:00 n=10 (<15) | $137k |
04:00 call = last 1-minute candle close before 04:00 ET vs the candle close in the last minute of the previous session (15:59 ET, 12:59 on half days) 09:00 call = the same at 09:00 ET "12m old" = the candle used closed that long before the target minute (shown above 5 min; older than 30 min is excluded from every rate) ✓ same direction as the real gap, ✗ opposite, and · inside the 0.10% dead band (not scored) high / low = extremes of 1-minute highs and lows while the market was closed, same base path = candle close every 15 minutes from the previous close to 09:30 ET, scale per row, centre line = previous close, ticks = 04:00 and 09:00, dashed = no candle in between real gap = oracle price at 09:30 ET vs at the previous close, on io's own oracle; on the 65 symbol-nights xyz also lists, it was within 0.05 pp of xyz's (median) and went the same way 61 of 62 times right before = this symbol's past nights with the same 0.10% band, shown from n=15 volume = sum of 1-minute base volume × close in the window, approximate definitions in methodology
call vs open · 2026-09-21
One night is a small sample; the running record is on the scorecard, which describes past nights and is not a forecast. Data: 2026-09-21.json · definitions and caveats in methodology.