Pre-market 2026-09-17: the chain vs the open
How far each US stock and ETF perp on Hyperliquid's EntropyIO (io) deployer moved on-chain between the 2026-09-16 close and 04:00 and 09:00 ET on 2026-09-17, 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 |
|---|---|---|---|---|---|---|---|---|
| NBISus equity | us equity | +7.30%✓ | +9.25%✓ | +10.94% / -0.01% | +9.81% | 09:00 n=11 (<15)04:00 n=10 (<15) | $2.8M | |
| SNDKus equity | us equity | +1.02%✓ | +3.24%✓ | +3.54% / -0.15% | +3.64% | 09:00 n=14 (<15)04:00 n=13 (<15) | $7.1M | |
| IONQus equity | us equity | +2.54%✓ | +3.11%✓ | +3.84% / +0.01% | +4.58% | 09:00 n=3 (<15)04:00 n=4 (<15) | $54k | |
| GPROus equity | us equity | -0.19%✗ | +2.27%✓ | +2.92% / -2.72% | +3.18% | 09:00 n=9 (<15)04:00 n=8 (<15) | $164k | |
| 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 · 2026-09-17
One night is a small sample; the running record is on the scorecard, which describes past nights and is not a forecast. Data: 2026-09-17.json · definitions and caveats in methodology.