Heat (Leverage Crowding)
In crypto futures you can bet bigger than your actual capital by borrowing (leverage). The catch: a position built on borrowed money gets force-closed (liquidated) if price moves even modestly against it. When upside bets pile up on one side, a small dip can set off liquidations that trigger more liquidations, whipping the market violently. Heat measures the temperature of that crowding.
The ingredients span five axes: funding rates (the premium the long side pays the short side — the bigger the premium, the more crowded the longs), surges in open interest (the total stake at risk suddenly ballooning), large traders' long/short skew, which side liquidations are hitting, and the share of aggressive buy orders. Any one axis alone is noisy, so all five are blended into one number.
The number isn't an absolute reading but a relative position versus the past year (a percentile). 50 means about normal for the past year; 90 means rare heat, in the top 10% of the year; 10 means unusually cold (few upside bets, or crowding on the short side).
How to read it: high heat means an unusual number of people have borrowed money to bet on 'up,' which some read as a market grown vulnerable to downside shocks. Low heat means no such crowding. If price surged today and heat pushed past 90, you know that rally is carrying a lot of borrowed money — a structure where the drawdown can cut deeper when a pullback comes.
But this is not a direction forecast. Crowding can persist far longer than you'd expect, and markets have kept climbing for weeks while overheated. Heat is a congestion sign showing how crowded the side you're standing on is — not an alarm clock for the drop.
What the data actually shows
Barobara's heat gauge shows records, not predictions. It publishes the distribution of what actually happened after past moments with similar heat — how many such moments there were, what percentage saw price rise, and the median return, as-is. If that distribution is a coin flip, it shows you a coin flip. Chart signals verified the same way are in the setup catalog, and what leveraged trading costs in fees and funding is on the fees page.Common misconceptions
'High heat means a crash is coming' — overheating is a status flag that the market has grown vulnerable to liquidation cascades, not a scheduled decline. In strong bull markets, overheated conditions have persisted for weeks while price climbed further.
'Low heat means safe' — low heat only means upside bets aren't crowded. Markets can still crash on bad news without any crowding, and heavy short-side crowding can produce violent pops to the upside (short squeezes) instead.
FAQ
Q. When should I check heat?
It's most useful before opening a leveraged position, as a check on whether you're about to join the crowded side. It's also a helpful reference on days with sharp moves, to gauge whether the move was driven by a liquidation cascade.
Q. Why not just watch funding rates?
Funding is only one of the five ingredients, and it swings a lot by exchange and by moment. Heat combines funding, open interest, long/short ratios, liquidations, and aggressive buying so that no single axis's noise dominates. Of course, no summary number is a silver bullet either — use it strictly as a status check.