Index depth is a static-book estimate for the index, not the mark. Static-book estimates from public exchange data. Not a real cost to move any price, not a mark-price forecast, and not trading advice. Methodology and limitations · Constituent changes · All perps
Indexes: Bybit SKYAI1USDT
Bybit SKYAI1USDT index
index SKYAI1USDT · constituents 2026-10-01 14:36Z · coverage OkComposition and constituent price vs index median (observed)
| Constituent | Pair | Type | Weight | Price | vs median | Guard |
|---|---|---|---|---|---|---|
| Gate | SKYAI_USDT | spot | 81.1% | 0.04282 | +0.14% | |
| MEXC | SKYAIUSDT | spot | 11.5% | 0.04276 | +0.00% | |
| binancealpha | SKYAI1/USDT | unknown | 7.5% | 0.04257 | -0.44% |
Prices as published by Bybit with the composition (2026-10-01 14:36Z). Widest constituent spread 0.59%. Guard: Bybit drops a source more than 5% from the median (exchange doc, rule set bybit-linear-2026-09-04). Modelled index from these prices: 0.0427944.
Mark and index
Observed mark 0.042600, last price 0.042530 (2026-10-01 15:35Z). Observed mark vs modelled index: -0.45% (snapshot times differ; index from the constituent snapshot). No modelled mark move is shown for this perp.
Index depth and est. liquidation exposure
| Range | Index depth (est.) | Depth / OI | Est. liquidation exposure | of which observed | Exposure-to-depth ratio (est.) |
|---|---|---|---|---|---|
| +2% | $16k | 1.7% | $110k | $0 | 7.2x est. |
| +5% | $28k | 3.0% | $180k | $0 | 6.4x est. |
| -2% | $15k | 1.6% | $110k | $0 | 7.6x est. |
| -5% | $20k | 2.2% | $180k | $0 | 8.8x est. |
Sensitivity (uncalibrated). Index depth to +5% under 0.5x $14k, 1x $28k, 2x $56k book refill. Index depth to -5% under 0.5x $10k, 1x $20k, 2x $41k book refill. The multipliers are assumptions, not fitted to observed events.
Coverage 93% of index weight modelled; held fixed: binancealpha SKYAI1/USDT. Included OI $950k (100% complete, exposure ok). Confidence high. Estimate 2026-10-01 15:29Z, books 2026-10-01 15:29Z, exposure 2026-10-01 15:30Z. Models: static-book v1; bybit-linear-2026-09-04; liq-in-range v1; prior hl-2026-09-27.
Index depth history (est.), last 14 days
Constituent divergence history, last 30 days
No constituent divergence recorded for SKYAI1 in the last 30 days.
Index, not mark. Index depth is a static-book estimate of resting spot liquidity between the index and the stated move, after the exchange's guard. Liquidations use the mark price, which also follows the perp's own price and basis. Static-book estimates from public exchange data. Not a real cost to move any price, not a mark-price forecast, and not trading advice.
Method. Constituents and weights come from each exchange's public index API, refreshed hourly. Spot order books are sampled every 5 minutes. Sources we cannot read are held fixed, so the figure is neither an upper nor a lower bound. See how mark and index prices work and the constituent change log.