BTC perp funding (annualised)
The annualised cost of holding leveraged BTC long exposure through perpetual futures funding.
Latest reading
30d window. Baked at build time and refreshed live on load. Historical series and alternative windows are available over the API.
What it measures
The annualised cost of holding leveraged BTC long exposure through perpetual futures funding.
Cost of leveraged BTC long exposure via derivatives.
How it is computed
Sum all 8-hour Binance BTCUSDT funding rates over a rolling window, then annualise: Σ(funding_rate_i) × (365/N) × 100.
Available windows: 7d, 14d, 30d, 90d. Default: 30d. The window is an averaging window applied to a noisy series — "90d" is a 90-day mean, not a maturity.
How to read it
Positive funding means longs pay shorts — net long conviction. Negative funding means shorts pay longs — bearish sentiment. The term structure (7d vs 365d) reveals whether sentiment is a short-term blip or structural. This is the zero-duration point of the term structure: a funding window is a lookback, not a tenor.
Use it programmatically
This indicator is available over the REST API and to AI agents over the Model Context Protocol. The methodology above is the whole of it — there is no proprietary adjustment layer between the inputs and the number.
Informational purposes only — not financial advice or a recommendation.