BTC: Bitfinex Perpetual Open Interest

Shown as its 2019–2022 sample; the latest readings and full history are included with Plus.

USD value of open BTC perpetual positions on Bitfinex (its USDT-margined BTC perpetual), one side of each position.

Why use it. A single venue's open interest with a longer history than our cross-venue charts, which start when our own collection began in October 2026: rising open interest means leverage entering the market, falling open interest positions closing. How to read it. Read the changes alongside price: price up with open interest up suggests new leveraged positions; a sharp drop marks liquidations or mass closing. One venue only, so compare its trend, not its level, with the cross-venue charts.

Calculation. Each period takes the perpetual's open interest (in BTC) at the period's last minute sample, valued at the mark price of the same sample. Before our own collection of Bitfinex began, the values are Bitfinex's published minute-by-minute history; from then on they are our own collection of the same figures. Source: the public open-interest history Bitfinex publishes for its USDT-margined BTC perpetual, read once by us on 7 November 2026: open interest and mark price every minute from the contract's first positions (each contract from its listing if later). It is joined to our own collection of Bitfinex's public futures data from 14 October 2026. Bitfinex alone: other venues are not included, nor contracts Bitfinex no longer lists.