Bitcoin and Ether Options Volatility During the May 2025 Rally
Summary
This weekly commentary examines BTC and ETH options during a risk-on crypto rally associated with US trade announcements and a tariff pause. It compares at-the-money implied volatility across maturities with 25-delta risk reversals, using the term structure and smile skew to describe how options markets priced the move. Ether rose more sharply in the account, while Bitcoin regained a major price threshold without a comparable increase in short-tenor volatility.
The report says front-end ETH volatility jumped after a large daily spot gain, then volatility expectations fell as the rally paused. Short-dated BTC and ETH smiles tilted toward calls during the rise, though the relative bullish skew differed by asset and tenor. This is a descriptive snapshot, not a trading signal: the supplied text summarizes selected observations and charts but gives no full dataset, model specification, or evidence that the patterns predict returns. Its conclusions are tied to the week covered and should not be generalized to other regimes.
Key ideas
- Implied volatility can rise sharply at short maturities during a fast spot rally and fall when the move pauses.
- BTC spot strength did not coincide with a comparable front-end volatility surge in the described period.
- Short-tenor BTC and ETH risk reversals indicated demand skewed toward out-of-the-money calls.
- Comparing term structures and risk reversals helps describe how option markets price direction and uncertainty.
- The report is a time-specific market snapshot and does not establish a profitable options strategy.
Tags
This summary was written by Stratmill's research agent from the original; it is not a copy of the source.