Options Skew Analytics

SO option chain

Strikes around the forward, as they were quoted at the close

Data as of 23 September 2026 (end of day)

2026-10-16(23 days)ATM 17.54%±3.68skew +2.78
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$75.0024.57%$0.05$0.10104
—————$77.0024.42%$0.15$0.25418
—————$79.0021.50%$0.25$0.40180
—————$80.0019.63%$0.35$0.451640
—————$81.0019.25%$0.50$0.7012
01$2.30$2.55—$82.0018.88%$0.75$1.0001
14$2.00$2.20—$82.5018.44%$0.90$1.1530440
10$1.65$1.90—$83.0018.35%$1.15$1.3011
300$1.20$1.3517.24%$84.00—$1.50$1.751525
2542$0.70$0.9516.58%$85.00—$2.20$2.402,89013
70$0.40$0.6516.47%$86.00—$2.50$3.2010
67$0.25$0.4016.52%$87.00—————
162,689$0.25$0.3517.54%$87.50—$4.10$4.503650
—————$88.00—$4.10$4.9012
—————$90.00—$6.00$6.90931
—————$92.50—$7.10$11.3020

Forward $83.65. The 25-delta put carries +2.78 volatility points over the 25-delta call.

2026-10-23(30 days)ATM 17.32%±4.15skew +2.77
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$80.0019.87%$0.45$0.7020
—————$82.0018.26%$0.90$1.1513
—————$83.0017.67%$1.25$1.5014
40$1.35$1.6017.21%$84.00—$1.70$1.95101
800$0.85$1.2016.74%$85.00—$2.30$2.551631
017$0.55$0.8516.62%$86.00—$3.00$3.301954
016$0.40$0.6017.10%$87.00—$3.70$4.101554
216$0.30$0.4017.50%$88.00—————

Forward $83.65. The 25-delta put carries +2.77 volatility points over the 25-delta call.

2026-11-20(58 days)ATM 19.72%±6.57skew +2.78
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
03$21.90$25.80—$60.00—————
06$17.10$20.90—$65.00—————
054$13.20$15.80—$70.00—————
013$9.00$10.50—$75.0023.73%$0.40$0.5511516
—————$77.5022.35%$0.70$0.90014
213$4.80$5.10—$80.0021.28%$1.30$1.40168369
184$3.10$3.30—$82.5020.37%$2.15$2.25379117
23353$1.80$1.9519.15%$85.00—$3.20$3.601,618126
68286$0.95$1.0518.50%$87.50—$5.00$5.308311
37801$0.50$0.5518.64%$90.00—$6.70$7.501,3254
11,119$0.25$0.3019.09%$92.50—$8.70$9.605951
41,431$0.10$0.1519.10%$95.00—$10.30$12.107601
—————$97.50—$12.70$14.50490
—————$100.00—$15.20$17.502750

Forward $83.51. The 25-delta put carries +2.78 volatility points over the 25-delta call.

2026-12-18(86 days)ATM 19.26%±7.80skew +2.76
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$22.10$25.90—$60.00—————
05$17.90$21.00—$65.00—————
030$13.60$16.20—$70.00—————
027$9.20$11.50—$75.0022.32%$0.65$0.8029712
012$7.00$9.30—$77.5020.72%$0.95$1.202310
115$5.10$5.80—$80.0019.55%$1.50$1.8063208
108$3.50$3.70—$82.5019.50%$2.60$2.7012634
22114$2.30$2.4018.90%$85.00—$3.60$4.0039719
50350$1.25$1.4517.86%$87.50—$4.00$5.701700
141592$0.75$0.8517.96%$90.00—$6.90$7.60775
1872,447$0.40$0.4517.74%$92.50—$8.00$9.80830
11516$0.15$0.2517.36%$95.00—$10.30$12.101,2240
—————$97.50—$12.70$14.801010
—————$100.00—$14.70$18.4070

Forward $83.46. The 25-delta put carries +2.76 volatility points over the 25-delta call.

2027-01-15(114 days)ATM 18.40%±8.61skew +3.41
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
02$35.00$38.30—$47.50—————
03$32.50$35.80—$50.00—————
—————$55.0035.03%$0.05$0.101010
08$17.90$21.00—$65.00—————
093$13.40$16.20—$70.0024.94%$0.40$0.602,0760
02$11.60$13.90—$72.5023.45%$0.55$0.851970
098$9.60$11.70—$75.0022.14%$0.90$1.101411
054$7.40$9.70—$77.5020.88%$1.30$1.557283
0312$5.60$7.60—$80.0020.00%$1.95$2.2083656
095$3.90$4.30—$82.5019.13%$2.80$3.1068113
17134$2.65$2.8518.16%$85.00—$3.70$4.308841
12528$1.65$2.0017.99%$87.50—$4.20$5.807960
215586$1.00$1.2017.47%$90.00—$6.00$7.805910
65487$0.55$0.8017.53%$92.50—$8.30$9.905230
67740$0.30$0.4517.29%$95.00—$11.30$12.2035910
—————$97.50—$12.80$14.601250
7072,224$0.10$0.1517.66%$100.00—$15.20$17.60490

Forward $83.67. The 25-delta put carries +3.41 volatility points over the 25-delta call.

2027-02-19(149 days)ATM 18.82%±10.07skew +3.10
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
02$22.90$26.00—$60.00—————
—————$65.0027.11%$0.30$0.5013
02$13.60$16.10—$70.0024.11%$0.55$0.8530
—————$75.0021.28%$1.05$1.45530
—————$77.5020.94%$1.70$2.001568
—————$80.0020.14%$2.40$2.70141
70$4.60$5.40—$82.5018.37%$2.90$3.6011810
014$3.20$3.6018.91%$85.00—$4.50$4.801050
022$2.20$2.5518.46%$87.50—$4.70$6.50140
353$1.35$1.7517.84%$90.00—$6.40$8.1020
047$0.80$1.1017.25%$92.50—$8.40$10.10610
—————$95.00—$10.50$12.30100

Forward $83.73. The 25-delta put carries +3.10 volatility points over the 25-delta call.

2027-03-19(177 days)ATM 18.95%±11.06skew +3.46
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$65.0026.30%$0.40$0.60621
08$13.70$16.00—$70.0023.77%$0.75$1.001510
011$10.10$12.30—$75.0021.80%$1.50$1.701,3301
—————$77.5020.91%$2.05$2.25540
042$6.30$8.80—$80.0020.02%$2.75$2.952060
110$4.90$5.20—$82.5019.45%$3.70$3.909416
134$3.60$3.9018.84%$85.00—$4.80$5.1029237
6741$2.60$2.8018.38%$87.50—$6.10$6.6079953
30892$1.80$1.9517.97%$90.00—$6.70$8.40670
47133$1.15$1.3017.45%$92.50—$8.50$10.301080
79254$0.60$0.9517.08%$95.00—$10.60$12.40360
—————$97.50—$13.20$14.70110
—————$100.00—$15.20$17.0080

Forward $83.77. The 25-delta put carries +3.46 volatility points over the 25-delta call.

2027-05-21(240 days)ATM 18.60%±12.85skew +5.11
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$70.0024.72%$1.10$1.5080
—————$75.0022.35%$1.70$2.3010
—————$77.5021.41%$2.20$2.8505
—————$80.0020.81%$2.90$3.6020
04$5.40$8.10—$82.5020.32%$3.70$4.6030
—————$85.0020.34%$4.90$5.8030
04$3.00$3.8016.36%$87.50—————
01$2.15$2.8516.20%$90.00—————
020$1.05$1.6016.30%$95.00—————

Forward $85.17. The 25-delta put carries +5.11 volatility points over the 25-delta call.

How to read this

Calls on the left, puts on the right, the strike between them — the layout every chain uses. Each block is one expiration, and the heading carries its days to expiry, the at-the-money implied volatility, and the one-standard-deviation move that volatility implies over that time.

Only the 21 strikes nearest the forward are stored, which is the part of the board that carries the volume. The shaded side is in the money: below the forward for calls, above it for puts.

Implied volatility is shown on the out-of-the-money side only. An in-the-money option is nearly all intrinsic value quoted on a wide market, so a volatility solved from it would look authoritative and mean very little. The price is still shown, because the price is real; the blank is deliberate.