01
What funding is, and why it exists
Perpetual futures never expire, so exchanges need a mechanism to keep the perp price anchored to the underlying spot price. Every few hours, whichever side of the trade is bigger pays a small fee to the other side — that fee is the funding rate. It's the cost (or reward) of holding a perp position, and it's how the market keeps perp and spot prices in line without a settlement date.
02
Positive vs negative funding — who pays whom
Positive funding means longs pay shorts: there's more leveraged demand to be long than short, so the crowd is leaning bullish. Negative funding means shorts pay longs: leveraged demand skews bearish. It's not a price forecast — it's a direct readout of which side of the trade is currently more crowded with leverage.
03
Funding as a crowding gauge, not a timing signal
Extreme funding (very high positive or very negative) tells you positioning is stretched and one side is paying a steep price to stay in the trade — that's the fuel for a squeeze if price moves against the crowd. But extreme funding can persist for days or weeks while the trend keeps running. Treat it as a risk flag, not an entry trigger.
04
Open interest — leverage in the system
Open interest (OI) is the total notional value of outstanding perp contracts — a direct measure of how much leverage is sitting in the market. Rising OI alongside a trending price means fresh conviction is entering and backing the move. Rising OI alongside a funding spike is more fragile: leverage is building fast, which raises the odds of a sharp flush if the trade gets crowded and then reverses.
05
Long/short ratio — reading the retail crowd
The long/short account ratio shows what share of traders (by account count, not size) are positioned long versus short. It's a contrarian read at extremes: when the crowd is heavily one-sided, that's often exactly the setup for a squeeze in the other direction, since a crowded trade has more traders who can be forced out.
06
Options: put/call ratio and DVOL (BTC/ETH)
For Bitcoin and Ethereum, Deribit's options market adds two more reads: the put/call open-interest ratio (above 1 means more downside hedging demand than upside speculation) and DVOL, the implied-volatility index (how much movement the options market is pricing in, annualized). Rising DVOL signals rising expected volatility — often a sign of nervousness or an approaching catalyst.
07
How to actually use this: confluence, not a standalone signal
None of these numbers should be traded in isolation. Look for confluence: funding at an extreme while price sits at a well-defined resistance level is a classic fade setup. Falling open interest (deleveraging) while price holds its level is a healthier, more sustainable picture than rising OI into a parabolic move. Combine positioning data with your own technical read of price.
08
Traps to avoid
Extreme positioning can stay extreme far longer than seems reasonable — don't assume a mean reversion is imminent just because a number looks stretched. Funding alone times nothing; it tells you where the crowd is, not when it will turn. Always wait for price to actually confirm a shift (a broken trendline, a failed high or low) before treating positioning data as a trade signal.