Frequently asked questions
Short answers to the questions we get most.
Is it free? Do I need an account?
Free, and no. The matrix and the spread pages are public — no signup, no card, no trial clock. Accounts will appear later for features that need them (alerts, saved settings).
Where does the data come from and how fresh is it?
From the exchanges’ own feeds — funding, prices, books and volumes as each venue publishes them. Screener quotes refresh about every 30 seconds; the Spread page’s order books stream to your browser in real time. Details in Data & coverage.
Why is a venue cell empty or dashed?
Either the venue does not list a market for that asset, or the venue’s quote failed a freshness or sanity check and clean mode excluded it. Turn clean mode off to see excluded quotes with badges explaining why.
Why do funding intervals differ between venues?
Intervals are set per contract by each exchange — 1h, 4h or 8h, sometimes changing with volatility. That is why ARBHUB normalizes every rate to /8h before comparing anything. See Intervals & normalization.
Is APR a prediction of my return?
No. It is the current instant’s spread annualized (/8h × 3 × 365) — a comparison scale. Funding rates change every interval and flip signs; realized yield is a different, usually smaller number. See APR math.
Why does the Spread page number differ from the matrix cell?
The matrix compares screener quotes (~30s cadence, mid-based). The Spread page reprices from live books at your notional — VWAP, fees and slippage included. The two agree on direction and disagree on decimals; the Spread page is the executable view.
Do you execute trades or give signals?
Neither. ARBHUB is analysis — it measures and ranks what exists. No order routing, no “buy now” pushes, and nothing here is financial advice.
Can I get alerts?
Not yet. Telegram alerts on your spread conditions are in development — what’s planned, and the waitlist on the landing page is the queue.
Why does a huge spread on a small coin disappear when I raise MIN VOL?
Because it lived below the volume floor. Extreme spreads concentrate in thin markets where the “spread” is mostly the cost of trading there — stale prints, one-fill price impact, empty books. If a number vanishes at $1M MIN VOL, treat that as the answer. See Reading liquidity.
How do I report a bug or request a metric?
Write to the team — the contact on the landing page footer works. A screenshot with the UTC time helps: data issues are diagnosed against feed logs, and the timestamp finds the moment.