Options Skew Analytics

VST option chain

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

Data as of 23 September 2026 (end of day)

2026-09-25(2 days)ATM 43.72%±4.47skew -3.75
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$8.70$10.25—$129.00—————
128$7.75$10.15—$130.0046.36%$0.05$0.102,18332
13$6.85$8.40—$131.00—————
122$5.95$7.40—$132.00—————
3445$5.10$6.35—$133.0043.78%$0.22$0.3345649
2212$4.15$4.75—$134.0042.59%$0.34$0.4656447
434$3.55$3.95—$135.0042.73%$0.57$0.661,191311
136$2.85$3.15—$136.0043.70%$0.87$1.00809149
2043$2.21$2.43—$137.0043.28%$1.18$1.40441303
10626$1.68$1.91—$138.0043.68%$1.67$1.86448279
26675$1.26$1.4644.10%$139.00—$2.15$2.4432446
333372$1.01$1.0945.62%$140.00—$2.85$3.201,666270
329166$0.72$0.8546.48%$141.00—$3.55$3.9521356
192289$0.45$0.6245.81%$142.00—$4.20$4.8512849
—————$143.00—$4.90$5.6010624
—————$144.00—$5.35$6.7511332
254874$0.20$0.2850.97%$145.00—$6.45$7.4518324
44187$0.15$0.2152.28%$146.00—$7.35$8.401054
—————$147.00—$7.70$9.452712
51358$0.10$0.1456.67%$148.00—$8.85$10.45134
—————$149.00—$9.95$11.3052

Forward $138.03. The 25-delta put carries -3.75 volatility points over the 25-delta call.

2026-10-02(9 days)ATM 40.78%±8.85skew -1.09
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$129.0040.22%$0.51$0.66498
27$8.55$9.90—$130.0040.63%$0.67$0.861,29768
30$7.80$9.65—$131.0040.08%$0.88$0.976028
32$7.05$8.10—$132.0040.34%$1.10$1.2370117
10$6.25$7.45—$133.0040.31%$1.34$1.5113640
02$5.70$7.50—$134.0040.28%$1.64$1.8116442
884$5.05$5.55—$135.0040.67%$2.02$2.18820293
02$4.50$4.95—$136.0040.91%$2.40$2.6210646
121$3.90$4.40—$137.0040.92%$2.84$3.057923
173$3.40$3.85—$138.0040.63%$3.30$3.507826
3620$3.00$3.3540.91%$139.00—$3.85$4.1036165
172120$2.56$2.7940.09%$140.00—$4.35$4.7030568
1438$2.23$2.4240.52%$141.00—$5.05$5.354364
130135$1.85$2.0840.32%$142.00—$5.55$6.002851
17253$1.63$1.8141.10%$143.00—$6.35$6.7015322
11837$1.34$1.5541.03%$144.00—$7.05$7.454221
47336$1.15$1.3241.40%$145.00—$7.60$8.30923
15638$0.90$1.1241.09%$146.00—$8.00$9.101510
7828$0.83$0.9542.05%$147.00—————
2958$0.70$0.8642.90%$148.00—$9.70$10.8544
178$0.58$0.7543.33%$149.00—$10.90$11.8001

Forward $138.23. The 25-delta put carries -1.09 volatility points over the 25-delta call.

2026-10-09(16 days)ATM 41.19%±11.91skew -2.40
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$128.0039.90%$1.03$1.15519
—————$129.0039.71%$1.10$1.4694
138$9.60$11.20—$130.0039.70%$1.38$1.6426818
11$8.85$10.35—$131.0039.48%$1.60$1.90197
—————$132.0039.43%$1.88$2.19232
30$7.50$8.25—$133.0039.71%$2.28$2.492952
—————$134.0040.17%$2.70$2.883416
43$6.25$6.95—$135.0040.12%$3.05$3.3081551
12$5.70$6.40—$136.0040.11%$3.45$3.75238
04$5.10$5.85—$137.0040.25%$3.95$4.20118
36$4.45$4.95—$138.0040.29%$4.45$4.70206
91$4.20$4.5541.55%$139.00—$4.95$5.2520
8139$3.75$4.1041.43%$140.00—$5.50$5.8526251
057$3.35$3.9542.58%$141.00—$5.80$6.4540
2927$3.00$3.5542.59%$142.00—$6.75$7.1020
14$2.65$3.2042.55%$143.00—$7.20$7.7501
06$2.37$2.6341.53%$144.00—$7.70$8.45110
5196$2.09$2.3541.59%$145.00—$8.65$9.15753
17$1.81$2.0941.49%$146.00—————
62$1.64$1.8641.87%$147.00—————
21$1.35$1.6741.57%$148.00—————

Forward $138.13. The 25-delta put carries -2.40 volatility points over the 25-delta call.

2026-10-16(23 days)ATM 41.36%±14.38skew -0.82
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$128.0040.47%$1.59$1.805045
—————$129.0040.36%$1.82$2.04206
3275$10.45$11.55—$130.0040.82%$2.17$2.335,369597
—————$131.0040.36%$2.37$2.62336
—————$132.0041.46%$2.80$3.101523
30$8.45$9.00—$133.0041.02%$3.15$3.35169
—————$134.0040.99%$3.50$3.751845
0229$7.25$7.80—$135.0041.12%$3.95$4.153,666221
2791$6.70$7.20—$136.0041.23%$4.40$4.609296
65$6.20$6.50—$137.0041.49%$4.85$5.152734
94$5.70$6.20—$138.0041.36%$5.35$5.602552
52$5.25$5.7041.38%$139.00—$5.90$6.202819
7272,986$4.90$5.1041.20%$140.00—$6.45$6.704,232103
1517$4.35$4.8041.18%$141.00—$6.80$7.408815
3237$4.00$4.4041.34%$142.00—$7.35$8.05160
720$3.70$4.0541.68%$143.00—————
756$3.35$3.6041.27%$144.00—$8.65$9.25152
2851,341$3.05$3.3041.44%$145.00—$9.30$9.951,5338
39$2.71$2.9841.18%$146.00—————
44$2.44$2.7241.26%$147.00—————
396$2.27$2.4741.64%$148.00—————

Forward $138.48. The 25-delta put carries -0.82 volatility points over the 25-delta call.

2026-10-23(30 days)ATM 40.61%±16.11skew -2.79
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$23.15$25.30—$115.00—————
—————$120.0040.41%$0.66$0.907,56124
—————$125.0039.77%$1.43$1.6020948
03$11.00$12.25—$130.0040.02%$2.63$3.0023067
321$7.95$8.35—$135.0040.01%$4.55$4.8099949
984$5.50$5.9040.71%$140.00—$7.05$7.508216
1050$3.80$4.0541.50%$145.00—$10.25$10.70605
41128$2.53$2.9042.81%$150.00—$13.85$14.55472
24179$1.55$1.9042.79%$155.00—$16.60$18.70271
36143$0.90$1.3743.67%$160.00—————
3269$0.39$0.6145.69%$170.00—————

Forward $138.42. The 25-delta put carries -2.79 volatility points over the 25-delta call.

2026-10-30(37 days)ATM 41.41%±18.30skew -3.10
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$23.60$26.30—$115.00—————
01$19.25$21.40—$120.0040.84%$1.00$1.204247
07$15.10$17.65—$125.0039.71%$1.73$2.0516032
25$11.75$13.00—$130.0040.09%$3.15$3.4549046
31$8.80$10.35—$135.0040.53%$5.05$5.5020233
71152$6.55$6.9041.41%$140.00—$7.55$8.251164
2380$4.60$5.0041.69%$145.00—$10.65$11.30320
28139$3.10$3.6042.01%$150.00—$14.20$15.65135
1491$2.09$2.7243.20%$155.00—$18.15$19.4020
9135$1.47$1.8343.68%$160.00—$21.25$23.45100
6933$0.88$1.4644.73%$165.00—————
—————$170.00—$30.50$33.0010

Forward $138.82. The 25-delta put carries -3.10 volatility points over the 25-delta call.

2026-11-20(58 days)ATM 46.19%±25.57skew -1.55
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
04$47.35$50.95—$90.00—————
03$43.65$46.05—$95.00—————
09$38.80$41.30—$100.00—————
010$34.05$36.60—$105.00—————
021$29.60$32.10—$110.0045.69%$0.92$1.201,9743
048$25.15$26.40—$115.0046.11%$1.73$1.9264856
217$21.40$22.80—$120.0045.81%$2.73$2.892,95171
837$17.70$18.55—$125.0045.77%$4.05$4.301,448824
1040$14.55$15.30—$130.0045.62%$5.80$6.001,750133
38134$11.85$12.20—$135.0045.72%$7.95$8.202,16983
113404$9.45$9.7546.15%$140.00—$10.50$10.9586223
52770$7.45$7.7546.28%$145.00—$13.45$14.00602121
97665$5.90$6.1046.66%$150.00—$16.85$17.3542464
92865$4.45$4.7546.50%$155.00—$20.40$20.903951
1491,995$3.60$3.7047.33%$160.00—$23.85$24.901420
562,629$2.68$2.8747.36%$165.00—$27.40$29.102830
1,4794,156$2.04$2.2447.76%$170.00—$31.80$33.50200
441,332$1.53$1.8448.48%$175.00—$36.10$38.10540
32390$1.24$1.3548.85%$180.00—$40.80$42.90300
78236$0.98$1.1850.18%$185.00—$45.55$47.60200
424,268$0.71$0.9550.48%$190.00—$50.35$52.5550

Forward $138.87. The 25-delta put carries -1.55 volatility points over the 25-delta call.

2026-12-18(86 days)ATM 45.09%±30.50skew -0.99
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
04$48.50$51.45—$90.00—————
014$44.15$46.70—$95.00—————
048$39.60$42.15—$100.0046.90%$0.71$1.004132
047$35.25$37.70—$105.0045.81%$1.12$1.444551
157$30.75$33.35—$110.0045.61%$1.84$2.111,9488
029$26.80$29.35—$115.0045.32%$2.75$3.0583313
4245$23.00$25.60—$120.0045.17%$4.00$4.251,54230
158$19.70$21.15—$125.0044.99%$5.50$5.803,39755
34115$16.70$18.10—$130.0044.90%$7.35$7.702,15121
25126$14.00$14.35—$135.0045.05%$9.60$10.0073120
119552$11.55$11.9045.07%$140.00—$12.20$12.5569219
50513$9.50$9.8545.11%$145.00—$15.10$15.502383
83696$7.75$8.1045.16%$150.00—$18.35$18.757460
37713$6.35$6.6545.43%$155.00—$21.50$22.801,1900
322,381$5.15$5.4545.66%$160.00—$25.40$26.302343
272,395$4.20$4.4545.98%$165.00—$29.15$30.802261
15516,240$3.45$3.6546.43%$170.00—$32.85$34.501773
49485$2.80$2.9846.75%$175.00—$36.85$39.00930
982,682$2.31$2.5847.65%$180.00—$42.00$43.50356
32,644$1.77$2.6349.34%$185.00—$46.00$48.20130
12350$1.58$2.0049.50%$190.00—$50.70$53.00110

Forward $139.34. The 25-delta put carries -0.99 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.