Concept
Risk Reversals
Risk Reversals are Breadth, Sentiment & External Data concepts. A reference entry: the Library explains it rather than implements it.
FX skew
What are risk reversals?
A risk reversal is two things. As a structure, it pairs an out-of-the-money call with an out-of-the-money put on the same underlying and expiry, one bought and one sold, creating directional exposure for little or no net premium. As a market quote, above all in FX, it is the implied volatility of the 25-delta call minus the 25-delta put for a given tenor, expressed in vol points.
That quote is the market's standard measure of skew. A positive 25-delta risk reversal means the market charges more for calls than for puts at matched deltas, implying demand for upside; a negative one means downside is the expensive side. Desks quote risk reversals alongside at-the-money vols and butterflies, and together the three define each tenor's volatility smile.
Because currency options trade mostly over the counter between banks, risk reversals offer a rare sentiment read on the world's largest market. Crypto has adopted the same convention, with 25-delta skew on BTC and ETH options read exactly the same way.
Why there's no indicator for this
A risk reversal is a property of the options market, not of spot. It requires the volatility surface: implied vols for 25-delta calls and puts by tenor, which in FX come from OTC interbank quotes aggregated and licensed by banks and data vendors. Nothing in a spot chart's price or volume encodes what options traders currently charge for calls versus puts, so no chart indicator can generate a genuine risk reversal series.
Price-only stand-ins, such as rolling realized-return skewness, describe the distribution the market already printed. The risk reversal is a forward-looking premium set by hedging demand, and the two routinely diverge, which is precisely what makes the quote informative.
How to read a risk reversal quote
A quote like 'EUR/USD 1-month 25-delta risk reversal at -0.6' compresses a lot into a few characters.
- 1Note the pair, tenor, and delta: 25-delta is the standard quote, while 10-delta versions describe deeper tail pricing.
- 2Read the sign as call vol minus put vol, so a negative number means puts trade over calls.
- 3Scale the level against that pair's own history; half a vol point is dramatic in some pairs and noise in others.
- 4Watch changes around events: fast repricing shows directional fear shifting even while spot sits still.
How traders use it
- As a per-pair sentiment gauge on FX desks, adding an options-market read to spot-based tools like a currency strength meter.
- For event risk: risk reversals around elections and central bank meetings reveal which outcome the market is paying to hedge.
- As a crowding check, with extreme skew read against futures positioning from COT analysis.
- By volatility traders trading skew itself, buying or selling risk reversals when the premium looks rich or cheap against realized asymmetry and prevailing implied volatility.
- As macro context: dollar-pair skews often reprice together when risk appetite turns, dovetailing with DXY correlation regimes.
Risk reversals vs other volatility reads
Implied Volatility: Implied volatility prices the overall level of options; the risk reversal isolates which side of the distribution that price loads onto.
VIX: The VIX compresses 30-day index option prices into one fear level; a risk reversal is pair-specific and directional, naming which tail is bid.
COT Analysis: COT reports show realized futures positioning with a reporting lag; risk reversals show what hedgers are paying for direction right now.
Related concepts · Options-derived
Concept family
Breadth, Sentiment & External Data
63 concepts mapped · 61 in the Library
Risk Reversals FAQ
What does a positive risk reversal mean?
At matched deltas, calls are priced over puts, meaning the options market assigns more risk, or more demand, to the upside of the pair over that tenor.
Are risk reversals the same thing as skew?
In FX and crypto, the risk reversal is the standard way skew is quoted at a given delta. Equity markets more often summarize skew with fixed-strike surfaces or dedicated indices.
Where can I find risk reversal data?
FX risk reversals live on bank platforms and licensed data terminals, with little reliable free coverage. Crypto is more open: exchange-derived dashboards publish 25-delta skew, often read alongside funding rates.
Do risk reversals predict where spot goes?
Research is mixed. They are better treated as a positioning and event-pricing read than a directional signal, and extremes often say more about crowding than about destination.
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