Derivatives data

Reading time ~6 min · Last updated 2026-07-17

Because most crypto trading happens in perps, the state of the derivatives market is market information. Three datasets reveal how traders are positioned — and crowded positioning is fuel for the sharpest moves in crypto.

Open interest (OI)

OI is the total notional of open perp positions. It measures commitment: rising OI means new money entering positions, falling OI means positions closing. Read together with price:

Price	OI	Suggests
Rising	Rising	New longs driving it — trend has fuel, but leverage is building
Rising	Falling	Shorts covering — a squeeze, often sharp but short-lived
Falling	Rising	New shorts pressing — conviction selling
Falling	Falling	Longs giving up — deleveraging, often late in a decline

Funding as positioning data

You met funding as a cost; across the market it is a sentiment gauge. Extreme positive funding = longs crowded and paying dearly to stay — rallies on this footing are brittle. Deeply negative funding = shorts crowded — squeeze risk. The pattern to respect: extreme funding + record OI = a loaded spring, in either direction.

Liquidation cascades — crypto's signature move

Here is why crypto's crashes are so fast, mechanically:

1. Price dips into a zone dense with long liquidation prices.
2. Liquidation engines force-sell those longs at market.
3. The forced selling pushes price lower — into the next band of liquidation prices.
4. Repeat, in seconds. The same physics runs upward through short liquidations.

You have felt this from the inside if you have read the liquidation article — a cascade is thousands of accounts hitting their maintenance margin in sequence. Cascades overshoot and then snap back once forced flow exhausts, which is why the wick after a cascade is often the opportunity, and why surviving one (low leverage, real stops) matters more than predicting it.

Long/short ratios — with a grain of salt

Exchanges publish the ratio of long vs short accounts. Retail crowds one side; the notional-weighted positioning often leans the other way. Treat extremes as a mild contrarian hint, never as a standalone signal.