What GRAM actually absorbs, and when it doesn't — the day's volume shape, book depth, and HL's share of global flow.
Shaded = the quiet set: 03, 05–08, 22 UTC — the 6 lowest-volume hours of GRAM's day over 28 days. Quiet hours carry 15.2% of daily flow.
HL share 10.1% vs Binance + OKX perps. Venue symbols are identity-checked by price parity, never name-matched.
| Taker | Fee | Spread + impact | All-in | Cost |
|---|---|---|---|---|
| Buy (lifts asks) | 4.5bp | 5.4bp | 9.9bp | $9.92 |
| Sell (hits bids) | 4.5bp | 7.0bp | 11.5bp | $11.55 |
This order is 22.1% of a quiet-hour p25 hour. Estimate — model-based: uniform book density within the measured 50bp band, base-tier taker fee, no builder fee. Not calibrated against fills yet.
Day shape — average share of GRAM's daily volume per 15 minutes, UTC, over 28 days. The shaded band is the quiet set: the 6 hours where a resting order meets the least flow.
Quiet 1h p25 — the 25th percentile of hourly USD volume inside those quiet hours. The hour that actually happens at 3am, not the average one.
Venue split — 24h perp volume by venue, joined through price-parity checked symbol mappings. “Not listed” means exactly that — never a guessed zero.
Cost to trade — base-tier taker fee plus a modeled walk of the measured 50bp book, both sides shown. A model until calibrated against our own fills; sizes past the measured band say so instead of extrapolating.