Options Skew Analytics

FI option chain

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

Data as of 29 September 2025 (end of day)

2025-10-03(4 days)ATM 33.12%±4.52skew +2.74
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
100$8.40$12.20—$120.00—————
100$6.00$8.00—$124.00—————
—————$126.0035.04%$0.35$0.506110
—————$127.0034.95%$0.55$0.703237
—————$128.0034.55%$0.80$0.9588886
—————$130.0033.82%$1.45$1.75150243
11447$1.45$1.6532.78%$131.00—$1.95$2.15562
53839$0.75$0.9032.84%$133.00—————
13978$0.50$0.6032.21%$134.00—————
65130$0.30$0.4031.64%$135.00—$4.30$6.10347
—————$136.00—$5.40$7.00104
—————$138.00—$6.00$9.9010
—————$140.00—$7.90$11.70120
—————$141.00—$9.40$12.8080
—————$145.00—$12.90$16.7010

Forward $130.50. The 25-delta put carries +2.74 volatility points over the 25-delta call.

2025-12-19(81 days)ATM 39.42%±24.37skew -0.95
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$95.0046.14%$0.55$0.902480
016$31.60$33.10—$100.00—————
01$26.00$29.30—$105.00—————
011$22.60$24.30—$110.00—————
011$19.30$20.40—$115.00—————
339$15.10$16.60—$120.0038.23%$3.90$5.009311
326$12.70$13.60—$125.0038.63%$6.10$6.801,2484
0217$9.40$10.90—$130.0039.26%$8.60$9.303,63025
6129$7.50$8.5039.44%$135.00—$10.40$11.703853
112338$5.50$6.6038.85%$140.00—$13.80$14.703023
8175$3.30$4.8036.36%$145.00—$17.90$20.103700
—————$150.00—$21.40$22.704910
24379$2.50$2.7039.18%$155.00—$25.70$27.704900
1272$1.80$2.0039.14%$160.00—$29.30$32.501270
—————$165.00—$34.50$36.403120
—————$170.00—$39.10$40.802050
—————$175.00—$44.40$45.90220
—————$180.00—$48.30$51.60130
12226$0.45$0.6042.25%$185.00—————

Forward $131.21. The 25-delta put carries -0.95 volatility points over the 25-delta call.

2026-01-16(109 days)ATM 36.94%±26.69skew +0.87
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
05$40.40$43.20—$90.00—————
08$35.70$39.40—$95.00—————
048$31.80$35.10—$100.00—————
011$27.30$30.00—$105.00—————
0185$24.10$25.20—$110.0038.05%$2.10$3.0047017
063$19.90$21.90—$115.0036.91%$2.90$4.203870
18230$17.50$17.90—$120.0039.79%$5.50$6.101930
4054$14.40$15.10—$125.0037.54%$6.30$8.101600
20628$11.50$12.40—$130.0038.36%$9.60$9.907652
4185$8.80$9.8036.94%$135.00—$12.20$12.803965
1472$7.10$7.5036.58%$140.00—$15.20$16.304135
35304$5.60$5.9036.66%$145.00—$18.50$20.807742
6844$4.20$4.6036.38%$150.00—$22.00$22.702484
1752$3.00$3.6036.04%$155.00—$26.00$28.001500
7397$2.45$2.7036.43%$160.00—$29.90$32.002630
4473$2.00$2.8539.16%$165.00—$35.20$35.503530
—————$170.00—$39.60$41.202240
—————$175.00—$44.40$46.301470
—————$180.00—$49.30$51.80230
0213$0.70$0.9038.93%$185.00—$53.80$56.1090
—————$190.00—$58.10$61.70620

Forward $132.23. The 25-delta put carries +0.87 volatility points over the 25-delta call.

2026-03-20(172 days)ATM 39.74%±36.08skew +0.90
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
02$50.90$54.70—$80.00—————
03$37.30$41.20—$95.00—————
13$29.80$32.40—$105.00—————
036$26.10$28.60—$110.0037.81%$3.60$5.002251
016$23.80$24.90—$115.0039.29%$6.10$6.4025820
07$20.00$21.70—$120.0038.91%$7.90$8.104235
013$17.80$18.80—$125.0039.93%$9.80$11.201260
1190$15.10$16.00—$130.0036.46%$11.00$12.50753
1598$12.70$13.8040.64%$135.00—$14.60$17.30704
291,256$10.10$11.1038.58%$140.00—$16.90$18.1018316
1188$8.80$9.3038.91%$145.00—$19.20$21.301290
1280$7.20$7.7038.45%$150.00—$24.30$26.50570
01,023$5.90$6.5038.40%$155.00—$28.00$30.40630
2162$4.90$5.4038.39%$160.00—$32.00$34.30890
—————$165.00—$35.90$37.201122
—————$170.00—$40.10$42.40260
0939$2.70$3.1038.43%$175.00—$45.10$46.801360
22196$2.20$2.6038.54%$180.00—$49.60$51.503780
—————$185.00—$53.20$57.1070
—————$190.00—$58.00$61.8020
—————$195.00—$63.00$66.7010

Forward $132.25. The 25-delta put carries +0.90 volatility points over the 25-delta call.

2026-06-18(262 days)ATM 37.97%±43.28skew +3.66
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
018$48.00$51.70—$85.00—————
05$43.70$47.50—$90.0041.52%$2.00$2.70170
02$40.50$42.00—$95.0044.49%$3.10$4.80130
036$36.10$38.90—$100.0038.58%$2.85$4.40642
06$32.70$35.50—$105.0040.95%$4.40$6.70210
034$28.70$31.40—$110.0040.51%$6.20$7.70380
014$25.90$27.80—$115.0040.04%$7.60$9.50350
049$22.60$24.90—$120.0039.42%$9.70$10.901071
0105$19.50$22.00—$125.0038.53%$11.50$12.801013
7251$17.60$19.00—$130.0038.81%$13.20$16.20181152
0151$16.00$17.4038.33%$135.00—$15.70$18.60421
4168$13.20$16.2038.31%$140.00—$18.80$21.101180
3134$11.30$13.3036.92%$145.00—$22.80$24.40860
0131$9.50$11.7036.67%$150.00—$25.20$28.10560
169$8.90$9.4036.56%$155.00—$29.20$31.70690
1038$6.70$8.4035.66%$160.00—$32.80$35.501100
077$6.60$7.2036.73%$165.00—$37.40$38.702980
0114$4.70$7.1036.60%$170.00—$40.70$44.101910
0328$4.80$5.2036.38%$175.00—$45.40$47.90590
—————$180.00—$50.10$52.201550
5116$3.50$4.8037.94%$185.00—$54.90$56.401650

Forward $134.54. The 25-delta put carries +3.66 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.