Ether one-week call-minus-put RR25 fell 2.63 volatility points to -2.30% over the daily observation window ending September 30, reversing from a call-rich reading, according to Derivasys data. The relative shift toward puts accompanied a decline in volatility implied by options near the underlying price: Ether one-week ATM IV fell 3.19 volatility points to 42.90%. The combination establishes a skew reversal alongside lower central implied volatility, without establishing an absolute increase in put volatility.
Derivasys data show Ether one-week ATM IV fell 2.52 volatility points to 43.85% over the 24-hour observation window ending September 29. The broader front end also eased: Ether ATM IV across one-week, two-week and one-month options declined by an average 1.85 volatility points to 45.29%. ATM IV is the volatility implied by options near the underlying's current price. The repricing combined lower central volatility with reduced wing curvature, making the change broader than an isolated butterfly adjustment.
Derivasys data show Ether one-week RR25, the difference between call-side and put-side implied volatility, fell 1.96 volatility points to −2.02% over the daily observation window. That shift made the relative put side richer; it does not establish an absolute rise in put implied volatility. Ether one-week at-the-money implied volatility rose by 1.42 volatility points to 45.09%. The skew move was notable against comparable history, while the at-the-money move was routine.
Derivasys data show Ether one-week at-the-money implied volatility rose 2.01 volatility points to 43.69% over the observation window. That is volatility implied by options near Ether’s current price. The increase was concentrated at shorter maturities: Ether front-end ATM IV rose on average, while its long-dated ATM IV was broadly unchanged. Ether’s 24-hour spot-index return was positive 0.31%, providing a measured price comparison alongside the options move without explaining it.
Ether’s short-dated options priced more volatility between 25 September, 18:31 UTC and 26 September, 18:31 UTC, even as its spot index moved only slightly. Derivasys data show Ether one-week ATM IV rising 1.66 volatility points to 40.91%, while Ether’s 24-hour spot-index return was minus 0.21%. The one-week implied-volatility increase was routine against the available comparison history. Longer-dated ATM IV edged lower, leaving the repricing concentrated near the front of the curve. One-week implied volatility remained above the volatility realised over the latest day, though a matching seven-day realised-volatility comparison was unavailable.
Ether one-week ATM IV fell 6.11 volatility points to 38.75%, a large move at the 90th percentile of comparable recent observations. Derivasys data show front-end Ether ATM IV averaged 43.23%, down 3.78 volatility points, while long-dated Ether ATM IV averaged 53.88%, down 0.37 volatility points. The 24-hour Ether spot-index return was 0.19%; intraday realised-volatility comparisons were unavailable.
Ether options repriced lower across the front end, with two-week BF25 falling 0.45 volatility points to 2.70%. Derivasys data show one-week ATM IV fell 2.24 volatility points to 44.30% and front-end ATM IV averaged 46.50%, down 1.89 volatility points, placing the convexity decline within a broader reduction in near-term implied volatility.
In Ether options, three-month BF25 rose 0.31 volatility points to 3.27%, a large move at the 90th percentile of comparable recent observations in Derivasys data. BF25 measures the relative richness of wings versus at-the-money options. The rise contrasted with Ether one-week ATM IV, which fell 2.28 volatility points to 46.21%, while Ether front-end ATM IV across one week to one month averaged 48.02%, down 0.91 points. The Ether 26SEP26 forward price fell 3.38% to $2,670.31. One-minute realised-volatility comparisons were unavailable.
Ether three-month BF25 fell 0.39 volatility points to 2.96% during the observation window, an exceptional move at the 100th percentile of the available 30-day comparison set. The fall reduced the premium in options away from the centre of the distribution. Ether one-week ATM IV also declined 3.02 points to 48.25%, while the nearest eligible forward proxy, 25SEP26, rose 0.20% to $2,757.46 in Derivasys data.
Ether one-month RR25 rose 1.22 volatility points to 2.03% over the observation window, making call-side volatility relatively richer than put-side volatility. Derivasys data show the one-week ATM IV increase was more routine: one-week ATM IV rose 2.65 volatility points to 51.27%. The 24SEP26 Ether forward-proxy price rose 4.36% to $2,750.27, while long-end ATM IV changed only modestly.
Ether one-week RR25 fell 1.99 volatility points to 0.82% at the 16:30 UTC cutoff, sharply narrowing call-side volatility’s premium over put-side volatility without reversing it. Ether two-week ATM IV fell 0.56 points to 47.36%, and Ether’s 24-hour spot-index return was -1.03%. Derivasys data show Ether one-week ATM IV at 48.08%, 4.32 points below seven-day realised volatility of 52.40%.
Ether one-week BF25 rose 0.52 volatility points to 2.85%, the notable daily adjustment in the options surface. Ether one-week ATM IV rose 2.11 points to 48.21%, yet remained 2.89 points below Ether seven-day realised volatility at the cutoff. Ether’s 24-hour spot-index return was 2.04%, while long-dated ATM IV was unchanged.
Ether two-week RR25 rose 3.29 volatility points to 2.48%, reversing from an Ether two-week RR25 reading of -0.81% and making calls richer than puts at the cutoff. Ether’s two-week RR25 move ranked at the 93.5 percentile of comparable history. Ether’s 24-hour spot-index return was 5.43%, while Ether one-week ATM IV of 46.19% was 3.99 volatility points below Ether seven-day realised volatility of 50.18%, according to Derivasys data.
Ether one-week ATM IV fell 8.62 volatility points to 44.54% during the 24-hour observation window, the sharpest standard-tenor move in the Ether surface. Ether spot-index return gained 3.03% over the same 24 hours. At the cutoff, Ether one-week ATM IV was 9.40 volatility points below seven-day realised volatility of 53.94%; separately, Ether two-week BF25 fell 1.34 volatility points to 2.55%, marking substantial convexity compression.
Ether one-week ATM IV fell 6.05 volatility points to 53.07% over the 24-hour observation window, an 86.2 percentile move in available Derivasys history. Ether’s 24-hour spot-index return was -1.07%, while one-week ATM IV stood 2.31 volatility points above seven-day realised volatility of 50.76%. Front-end ATM IV averaged 52.16%, showing the compression was concentrated in shorter maturities.
Ether one-week RR25 fell 4.48 volatility points to -1.59%, shifting the front-end smile from call-rich to put-rich relative volatility at the cutoff. Ether one-week ATM IV simultaneously fell 2.08 volatility points to 55.04%, so the move was a skew repricing rather than a broad rise in implied volatility. Ether’s 24-hour spot-index return was -6.17%, while Ether one-week ATM IV remained 4.33 volatility points above seven-day realised volatility. Derivasys data also show richer two-week convexity.
Ether’s near-expiry option smile underwent its largest measured rotation at the 17SEP26 expiry, while fixed-tenor volatility changes remained modest. One-week RR25 rose 1.78 volatility points to 0.30%, placing call-side volatility above put-side volatility; one-week ATM IV added 0.64 points to 53.06%.
Ether one-week ATM IV rose 3.94 volatility points to 52.42% during the observation window, while the 24-hour spot-index return was -1.17%. At the cutoff, one-week ATM IV sat 7.23 points above seven-day realised volatility, signalling a higher implied reading than the recent realised measure. DerivaSys data also show downside relative volatility becoming richer: Ether two-week RR25 fell 0.45 points to -1.40%, meaning puts were richer than calls on that measure.
Ether one-week RR25 dropped 3.76 volatility points to -1.16%, a notable shift toward relative put-side volatility at the 16:29 UTC cutoff. Ether’s 24-hour spot-index return was -1.26%, while one-week ATM IV of 48.48% sat 2.91 points above seven-day realised volatility, according to DerivaSys data.
Ether one-week RR25 rose 2.90 volatility points to 2.60%, shifting relative volatility toward calls and leaving calls richer than puts at the cutoff. The move was notable against the available history. Ether’s 24-hour spot-index return was 5.17%, while one-week ATM IV of 51.60% stood 7.58 points above seven-day realised volatility.
Ether one-month BF25 fell 0.69 volatility points to 2.53% during the window, a large adjustment at the 91.3 percentile of comparable full-history moves. Meanwhile, one-week RR25 dropped 2.96 points to minus 0.30%, placing relative put-side volatility above call-side volatility. One-week ATM IV finished at 50.00%, down 2.31 points, and Ether’s 24-hour spot-index return was minus 2.23%. DerivaSys data show convexity easing alongside a marked skew reversal.
Ether one-month BF25 rose 0.50 volatility points to 3.22%, the material surface move, while one-week ATM IV climbed 2.12 points to 52.31%. BF25 measures the relative pricing of options away from the centre of the distribution. DerivaSys data put front-end ATM IV at 52.53%, up 1.74 points; Ether’s 24-hour spot-index return was 0.13%, and one-week implied volatility exceeded seven-day realised volatility by 9.23 points.
Ether’s one-week ATM IV rose 2.35 volatility points to 50.19% over the observation window, lifting the cost of near-term options protection. Ether spot gained 0.78% over 24 hours, while Ether’s one-week ATM IV stood 6.27 volatility points above Ether’s seven-day realised volatility of 43.92%.
Ether’s one-month BF25 fell 0.19 volatility points to 2.72%. BF25 describes the curvature of the options smile, and the one-month Ether BF25 move was routine against the available historical sample. Derivasys data show that longer-dated Ether ATM IV changed little by comparison.
Ether’s three-month BF25 rose 0.25 volatility points to 3.27%, a notable move that lifted the convexity measure to its 91.3 percentile of available history. Front-end ATM IV averaged 49.28%, up 0.52 points, while one-week skew rotated toward puts but remained call-rich.
Ether’s short-dated options surface moved higher, with one-week ATM IV rising 4.63 volatility points to 46.95%. One-week RR25 increased 1.79 points to 2.55%, meaning calls carried higher implied volatility than puts. Front-end ATM IV averaged 49.13%, while the long end was effectively unchanged, concentrating the adjustment in nearer expiries.
Ether’s nearest-expiry smile rotation was the largest surface dislocation, accompanied by a 2.83-point rise in Ether one-week RR25 to 1.36%. Ether one-week ATM IV rose 1.78 volatility points to 43.37%, remaining 3.46 volatility points below Ether seven-day realised volatility.
Ether one-week ATM IV declined as one-week RR25 moved into put-rich territory. The move was concentrated at the front end, while long-dated ATM IV was broadly unchanged.
Ether one-week ATM IV increased 4.73 volatility points to 47.71%, a notable move at the 81.2 percentile. Ether front-end ATM IV across the one-week, two-week and one-month tenors rose 2.76 volatility points on average, while Ether long-end ATM IV across the six-month and one-year tenors rose 0.26 volatility points on average. The Ether one-year-minus-one-week ATM IV slope was 8.15 volatility points.
Ether one-week RR25 fell 1.81 volatility points to -2.00%, leaving one-week relative put-side volatility richer than one-week call-side volatility. Ether one-week ATM IV fell 1.17 volatility points to 43.30%, while Ether front-end ATM IV across the 1W, 2W and 1M tenors averaged 46.23%, a decline of 0.43 volatility points in Ether front-end ATM IV across the 1W, 2W and 1M tenors. Ether’s 1Y-minus-1W ATM IV slope rose to 12.53 volatility points.
