xyz:GBPfx · growth mode on · 50× max
Over 106 days of 20-level order-book snapshots, xyz:GBP quoted a median spread of 3.70 bps in US regular hours with $393k resting within 25 bps of mid. A $25k market order paid about 5.01 bps in regular hours and 25.75 bps on weekends, when depth within 25 bps fell to $25k. Taker fee is 0.90 bps with growth mode on; funding averaged -2.38% annualised over the last 30 days.
by sessionNew York time · medians over 106 days
| session | snaps | spread | p90 | top | depth ±10 | depth ±25 | depth ±50 | $5k | $25k | $100k | $100k fills | $250k fills |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| US regular 9:30–16:00 | 4,821 | 3.70 | 9.61 | $393k | 5.01 | 6.51 | 88% | 32% | ||||
| US extended 4–9:30, 16–20 | 7,098 | 3.75 | 12.82 | $329k | 5.44 | 6.69 | 84% | 29% | ||||
| Overnight 20–4 | 4,857 | 3.00 | 11.34 | $390k | 5.03 | 6.52 | 85% | 31% | ||||
| Weekend / holiday | 9,175 | 8.29 | 23.21 | $25k | 25.75 | 56.60 | 42% | 14% |
bps unless stated · RTH 9:30–16:00 · extended 4:00–9:30 and 16:00–20:00 · overnight 20:00–4:00 on weekdays · weekend runs Friday 20:00 to Monday 4:00 and includes NYSE holidays · slip = mean of the buy and sell side of a market order walking the visible 20 levels · fills = share of snapshots the size fits inside those levels · "—" = not fillable in the median snapshot
slippage curve
hour of week
weekly · spread
weekly · depth ±25 bps
per round trip = 2 × median slippage + 2 × taker fee · funding uses the 30-day mean hourly rate, annualised, charged for a position held all day · slippage between tested sizes is interpolated on a log scale · ignores maker rebates, impact that persists after your fill, and fee tiers
25,951 snapshots · 2026-06-16 18:28 → 2026-09-30 18:22 UTC (106.0 days) · size decimals 0 · raw: /data/xyz/GBP.json · method and caveats: methodology