Every number on the board, and what it means
The board is a research view built from venue fields, saved observations and calculated totals. Read the update time and metric definition before turning a number into a conclusion.
What Arcus is- Type
- Perpetual derivatives across asset classes
- Markets
- Use the current displayed snapshot
- Hours
- Per-market session and operational rules
- Data
- Cached fields and observed history
Start with the timestamp and coverage
The reviewed market reader uses a 30-second cache. That is a cache setting, not a promise of maximum end-to-end delay: collection failures, upstream timestamps and page refreshes also matter. An unchanged display does not prove zero activity.
Open-interest history is built from stored snapshots. Coverage can have gaps and need not begin at venue launch. Missing data is not zero; totals and dollar conversions are derived values, not an unmodified pass-through of every field.
Compare turnover and open interest carefully
Volume measures trading during an interval; open interest measures outstanding exposure at a point in time. Align units and timestamps before forming volume / OI. If OI is zero or unavailable, the ratio is undefined or unhelpful.
A large ratio indicates activity relative to the observed exposure. It does not prove deep liquidity, easy exits or the intentions of participants. A small ratio does not prove that positions are patient or high-conviction. Check actual depth separately.
Funding is not an income label
Positive funding means longs pay shorts and negative means the reverse. Arcus’s base component and off-hours rules mean the sign is not a pure crowding indicator. Identical displayed rates can reflect the mechanism or rounding.
Distinguish an indicative rate, an annualized comparison and a settled account payment. Check the interval and actual payments for a held position; a temporary displayed rate need not persist.
Margin, minimum size and daily range
Initial and maintenance margin serve different purposes. Use current symbol-specific values; higher off-hours initial margin does not mean maintenance rises by the same amount. Minimum quantity and price increments are also market-specific.
The day range locates a price within the reported high/low window. It does not predict reversal, cap future loss or show the available execution price. Check the exact observation and window before comparing rows.
Use the board as a research starting point
Public statistics require no trading login, but do not prove your account’s eligibility. The board cannot certify execution during stress, actual slippage at your size or venue safety.
Open a market’s page for its observed history and verify current specifications at the venue. Do not infer lifetime volume from a short rolling series or turn missing history into a clean risk record.
Sources and observation limits
Reviewed 26 September 2026. Educational copy, not a trade recommendation or an audit of venue execution. Check current contract parameters and account eligibility; historical board observations are not live quotes.
Questions
What does open interest tell me?
Outstanding exposure at the observation time, using the displayed units. It is not spare liquidity available to fill an order.
Does a high volume/OI ratio mean easy exits?
No. It compares activity and exposure, not depth at your price or size. It also does not identify trader intent.
Is the board an instantaneous raw feed?
No. The reviewed source has a 30-second market cache, stored history and calculated aggregates. Check timestamps and missing-data indicators.
Can I read it without an account?
Yes. Public research access is separate from trading permissions and eligibility.