Structure and intent
A risk reversal (RR) typically buys a call and sells a put (or the reverse) at similar deltas — commonly quoted at 25-delta. The package is directional: long call / short put is net bullish with short downside premium; long put / short call is net bearish with short upside premium.
Unlike a vertical, both legs point economic exposure in a way that does not fully fence the short side unless you add wings. Many RR are run with delta hedges or as overlays on inventory (similar spirit to collars when combined with spot).
Desks also use RR as a skew quote: the price difference between the 25Δ call and 25Δ put summarizes wing demand. That market convention is why RR appears on skew dashboards, not only on strategy menus.
Why RR is not vol-neutral
Net delta is usually large. Net vega depends on which wing is richer and on strike choice; it is not a pure long or short vol trade like a straddle. You are expressing “I want this direction and I am willing to sell the other wing’s vol.”
In crypto, downside put skew is often bid relative to calls (crash demand, long inventory hedges). Selling puts / buying calls may collect skew premium while leaning long — attractive until the crash you sold arrives.
Always mark the short leg’s risk as real. A naked short put inside an RR can dominate P&L in a liquidation cascade.
Reading RR on the skew desk
When 25Δ RR is elevated in the put-bid direction, markets pay more for downside convexity. When call wings bid (less common but seen in squeeze regimes), RR flips narrative toward upside chase.
Term structure of RR matters: near-dated skew can spike into events while back-dated RR stays calmer. Compare tenors before expressing a multi-week view with a one-week RR.
OptionsMatch skew and term desks help visualize; multi-venue skew can disagree when user bases differ (hedgers vs retail call buyers). Divergence is research, not automatic arb.
Inventory and collar connections
Long coins + long put + short call is a collar — economically related to combining protective and covered overlays. Long coins + short put + long call is a synthetic-leaning bullish package with different risk.
Know your inventory unit and settlement type. An inverse short put finances differently from a linear short put when BTC already moves your equity.
Corporate and fund policies may restrict naked short wings even inside RR. Synthetic definitions on venues also affect margin.
Execution and hedges
Execute as a package when possible to lock the RR differential. Legging can leave you with an unwanted naked short if the long wing fails to fill.
Some traders delta-hedge RR toward a target delta, turning residual risk into a skew/vol expression. That requires futures or perp liquidity and active management — not a set-and-forget retail ticket.
Watch spreads on both wings. Thin call wings and liquid puts (or vice versa) create asymmetric execution cost that distorts the “quoted” RR.
Risk management
Define what you do if spot approaches the short strike: buy back the short, roll, or add a wing to convert into a spread. Written rules beat improvisation during a cascade.
Size the short wing to survive a historical stress move, not only yesterday’s ATR. Crypto tails are fat.
Educational framing: RR teaches skew literacy and directional packaging. It is advanced because the short leg can dominate. Use OptionsMatch skew for context; trade only within venue risk limits you understand.