xyz:ARMus equity · growth mode on · 10× max
Over 106 days of 20-level order-book snapshots, xyz:ARM quoted a median spread of 3.60 bps in US regular hours with $350k resting within 25 bps of mid. A $25k market order paid about 5.35 bps in regular hours and 7.83 bps on weekends, when depth within 25 bps fell to $107k. Taker fee is 0.90 bps with growth mode on; funding averaged +8.41% 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 | 4,827 | 3.60 | 8.40 | $350k | 5.35 | 8.86 | 70% | 8% | ||||
| US extended 4–9:30, 16–20 | 7,102 | 2.97 | 6.29 | $160k | 6.14 | 11.75 | 21% | 4% | ||||
| Overnight 20–4 | 4,886 | 3.19 | 7.41 | $154k | 7.06 | 13.87 | 20% | 2% | ||||
| Weekend / holiday | 9,148 | 3.03 | 7.16 | $107k | 7.83 | 17.96 | 6% | 0% |
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
25,963 snapshots · 2026-06-16 18:27 → 2026-09-30 18:21 UTC (106.0 days) · size decimals 2 · raw: /api/xyz/ARM.json · method and caveats: methodology