Pre-market 2026-09-18: the chain vs the open
How far each US stock and ETF perp on Hyperliquid's EntropyIO (io) deployer moved on-chain between the 2026-09-17 close and 04:00 and 09:00 ET on 2026-09-18, 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 |
|---|---|---|---|---|---|---|---|---|
| IONQus equity | us equity | +1.08%· · 24m old | -1.18%· · 13m old | +1.39% / -1.41% | +0.07% | 09:00 n=4 (<15)04:00 n=5 (<15) | $53k | |
| GPROus equity | us equity | +1.58%✓ | +0.79%✓ | +3.50% / -0.93% | +0.76% | 09:00 n=10 (<15)04:00 n=9 (<15) | $140k | |
| NBISus equity | us equity | +0.45%✓ | -0.70%✗ | +1.26% / -1.81% | +0.17% | 09:00 n=12 (<15)04:00 n=11 (<15) | $1.9M | |
| SNDKus equity | us equity | +1.83%✓ | +0.19%✓ | +2.20% / -0.62% | +1.14% | 09:00 80% of 1504:00 n=14 (<15) | $10.4M | |
| EWYus etfmissing data · excluded | us etf | — | — | — / — | — | 09:00 n=0 (<15)04:00 n=0 (<15) | — |
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 · 2026-09-18
One night is a small sample; the running record is on the scorecard, which describes past nights and is not a forecast. Data: 2026-09-18.json · definitions and caveats in methodology.