Indices perps on Arcus
Arcus gives index exposure through ETF-referenced perpetuals: SPY for the S&P 500 and QQQ for the Nasdaq-100. The perp follows the ETF share price, not the index level. The API listed 2 indices markets as ONLINE on , each with a per-market open-interest cap.
Indices markets
Every live indices perp on Arcus, sorted by 24h volume. Click a column to re-sort, or open a market for its chart and contract details.
Price, 24h change, 24h volume, open interest (one side, at mark) and hourly funding from GET /v1/markets. Max leverage is the in-session figure.
 SPYSPDR S&P 500 ETF Trust | $766.22 | -0.18% | $30.14M | $3.39M | +0.00051% | 50x |
 QQQInvesco QQQ Trust | $745.53 | -0.31% | $11.06M | $2.22M | +0.00051% | 25x |
Showing the build-time reading (October 2, 2026, 05:21 UTC) until live data loads.
How indices perps work on Arcus
Index perps follow the same session rules as equities. In session, funding is live; outside 04:00-20:00 ET it is locked to SOFR + 0.5% a year, initial margin rises, and price bands limit how far the mark can travel until the next session reopens. Details are in Arcus's real-world-asset docs.
Other categories
Arcus perpetuals are not available to persons in the United States, Canada or the United Kingdom.
How this market data is sourced
Live figures. Price, 24h change, 24h volume, open interest, funding and the off-hours band state for every Arcus market are read in your browser from the public Arcus API (GET /v1/markets), cached for 60 seconds and refreshed while the tab is open. The chart reads GET /v1/candles. The numbers are shown as the API returns them; nothing is hand-adjusted.
Static figures. Leverage limits, margin fractions, OI caps and the market list come from a read of /v1/markets taken when this page was built, on . Arcus can change any of them; the live panel is the more current source.
Editorial. The plain-English description of each underlying is written by Concept211. This is an independent site: Arcus does not review or approve it. Read the full editorial methodology for how figures are sourced and corrected.
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