Reading BTC Options Skew as Demand Shifts Toward Upside Exposure
Summary
This commentary tracks how BTC options pricing shifted from a preference for downside protection toward a more balanced volatility smile. It compares SABR-calibrated implied volatility across strikes and tenors, noting that earlier smile flattening came from falling implied volatility in out-of-the-money puts. The subsequent rise in out-of-the-money call volatility, while put volatility remained lower, further reduced the skew. At short maturities, calls and puts with similar deltas were priced at similar implied volatility levels.
The note also explains that SABR rho helps describe smile skew: positive values correspond to a relative call premium, while negative values reflect a put premium. Short-dated at-the-money implied volatility rose from prior lows, which the authors associate with BTC’s sharp move above $18,000 and possible renewed appetite for upside exposure. The commentary treats this interpretation cautiously: the direction of spot and implied volatility may not persist, and the upcoming December CPI release could affect market sentiment. It offers a market reading, not a tested signal or trading recommendation.
Key ideas
- A BTC volatility smile can flatten when put implied volatility falls, call implied volatility rises, or both occur.
- Out-of-the-money call volatility rose while put volatility stayed near its reduced level.
- SABR rho describes the correlation used in calibration and helps indicate the direction of smile skew.
- Short-tenor BTC options showed more similar implied volatility for comparable call and put deltas.
- The commentary links rising at-the-money volatility to a spot rally but says the move may not last.
Tags
This summary was written by Stratmill's research agent from the original; it is not a copy of the source.