01 · Daily briefing
Macro · Crypto · OptionsThe day in markets.
Ether fell 2.54 per cent over the 24-hour window, underperforming Bitcoin as markets continued to digest Kevin Warsh’s warning that stubborn inflation could require higher US rates. Two-week implied volatility fell 2.73 points to 45.15 per cent and one-week risk reversal swung towards puts. One-week implied volatility remains well below seven-day realised volatility, while a brief Kraken funding delay was resolved during the session without evidence that it drove the broader repricing.
Ether falls as the front end cheapens
Ether’s spot decline was accompanied by lower implied volatility across the curve and a defensive turn in short-dated skew, while long-dated volatility was comparatively stable.
Macro
Kevin Warsh’s Jackson Hole message left open the possibility of US rate increases if inflation fails to cool, keeping the wider policy setting restrictive for crypto and other risk assets.
Crypto
Kraken reported and then resolved a short-lived delay affecting Ethereum funding. It was operationally relevant to ETH users, but the available evidence does not establish a connection to the broader spot or volatility move.
Links identify the underlying reporting for retained events; entries without a retained link are marked.
02 · Options market read
What the volatility surface did.
6 of 6 headline tenors were comparable at both endpoints. The largest ATM IV move was 2W at -2.73 volatility points, to 45.15%.
Derived directly from structured Derivasys surface data03 · Catalyst check
28 Aug 2026, 15:33 UTC to 29 Aug 2026, 15:33 UTCNo catalyst assigned.
No qualifying context was identified after a healthy coverage check.
04 · Detailed analysis
What changed across the ETH volatility surface.
At the 15:33 UTC cutoff, 1W ATM IV was 43.44%, 10.82 volatility points below seven-day realised volatility of 54.26%; 24-hour realised volatility was 35.21% and 30-day realised volatility was 49.13%.
Front-end ATM IV decreased, averaging -2.13 volatility points to 45.77% across 1W, 2W and 1M.
Long-dated ATM IV decreased, averaging -0.21 volatility points to 55.33% across 6M and 1Y.
RR25 moved towards puts, averaging -1.05 volatility points to -0.32 volatility points across the six available headline tenors.
BF25 decreased, averaging -0.14 volatility points to 2.65 volatility points across the six available headline tenors.
The largest standard-tenor ATM IV move was -2.73 volatility points at 2W, to 45.15%.
Universe roll: added 2SEP26; removed 29AUG26. Comparisons use common expiries only.