Ether’s ATM curve exits inversion

The reading

What the evidence says

Ether alone exited inversion in the aligned crypto comparison: its 1M-minus-1W spread changed by +0.64 vol points ^[2] to +0.08 vol points ^[1]. Bitcoin’s spread changed by +1.51 vol points ^[3] to -0.78 vol points ^[4], and Solana’s by +6.03 vol points ^[5] to -1.74 vol points ^[6]. ATM means at-the-money implied volatility. The narrowing primarily reflects lower 1W ATM readings: Bitcoin changed by -1.96 vol points ^[7] to 38.75% ^[8], Ether by -0.70 vol points ^[9] to 52.30% ^[10], and Solana by -4.89 vol points ^[11] to 57.24% ^[12]. Matched 1M ATM changes distinguish Solana from its peers: Bitcoin changed by -0.45 vol points ^[13] to 37.97% ^[14], Ether by -0.06 vol points ^[15] to 52.38% ^[16], but Solana by +1.14 vol points ^[17] to 55.50% ^[18]. Ether’s crossing is consequently a narrow change in tenor ordering, while Solana combines front-end relief with firmer deferred ATM volatility.

Directional pricing also separates Ether from Bitcoin and Solana. RR25 measures call-versus-put IV asymmetry; negative readings indicate a put premium. Ether’s 1W RR25 changed by +0.20 vol points ^[19] to -5.66 vol points ^[20], easing an existing downside bias. Bitcoin’s changed by -1.00 vol points ^[21] to -3.19 vol points ^[22], and Solana’s by -4.03 vol points ^[23] to -4.22 vol points ^[24], deepening their already negative readings. The matched 1M comparison confirms that these directions extend beyond 1W: Ether’s RR25 changed by +0.61 vol points ^[25] to -3.61 vol points ^[26], Bitcoin’s by -0.66 vol points ^[27] to -3.09 vol points ^[28], and Solana’s by -0.69 vol points ^[29] to -0.40 vol points ^[30]. Solana’s 1M RR25 crossed from positive to negative, whereas its 1W move strengthened an existing downside bias. Ether’s skew relief therefore reaches 1M despite its nearly unchanged 1M ATM volatility.

Butterfly premiums make Solana’s distinction broader than its 1W ATM decline. BF25 measures the average wing IV premium over ATM, rather than absolute wing IV or directional bias. Solana’s 1W BF25 changed by +0.54 vol points ^[31] to 1.60 vol points ^[32]; Bitcoin’s changed by -0.03 vol points ^[33] to 1.02 vol points ^[34], and Ether’s by -0.28 vol points ^[35] to 1.96 vol points ^[36]. At 2W, Solana’s premium changed by +0.59 vol points ^[37] to 1.67 vol points ^[38], against Ether’s +0.04 vol points ^[39] to 1.92 vol points ^[40] and Bitcoin’s -0.06 vol points ^[41] to 1.09 vol points ^[42]. Solana’s 2W widening is thus a substantive middle-tenor feature beside the much smaller opposing peer changes. At 1M, Solana and Ether share widening butterfly premiums: Solana changed by +0.36 vol points ^[43] to 1.83 vol points ^[44], and Ether by +0.15 vol points ^[45] to 1.82 vol points ^[46]. Bitcoin’s 1M premium instead changed by -0.13 vol points ^[47] to 0.95 vol points ^[48]. Ether’s 1W butterfly narrowing therefore coexists with 1M widening, while Solana’s widening spans 1W, 2W and 1M.

Spot and realized volatility qualify the apparent relief in 1W ATM pricing. Over the aligned crypto interval, Bitcoin spot changed by -0.22% ^[49], Ether by -1.08% ^[50], and Solana by +0.56% ^[51]. Solana’s downside-skew deepening therefore accompanied a positive spot return, whereas Ether’s skew relief accompanied a negative return; the options distinction does not simply mirror contemporaneous spot direction. On the common trailing realized-volatility window, Bitcoin registered 39.29% ^[52], Ether 50.15% ^[53], and Solana 59.38% ^[54]. Their forward 1W IV-minus-trailing-RV spreads were respectively -0.54 vol points ^[55], +2.15 vol points ^[56] and -2.14 vol points ^[57]. Ether retains a positive descriptive spread despite its 1W ATM decline; Bitcoin and Solana have negative spreads. Bitcoin’s separate broader volatility benchmarks were DS30 at 42.14 vol points ^[58] and BVIV at 41.49 vol points ^[59], with BVIV-minus-DS30 at -0.65 vol points ^[60]; these use distinct methodologies from fixed-tenor ATM IV. Meanwhile, The Guardian reported hiring resilience alongside a subdued hiring backdrop and a tightening interpretation. That chronology supplies a possible policy backdrop, but does not explain why Ether’s 1M-minus-1W curve crossed into positive territory while Bitcoin and Solana remained inverted.