Options Skew Analytics

COF option chain

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

Data as of 22 September 2026 (end of day)

2026-10-02(10 days)ATM 30.69%±10.26skew +1.32
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
05$60.20$64.00—$140.00—————
01$45.30$48.90—$155.00—————
01$14.10$15.70—$187.5033.55%$0.35$0.55417
—————$192.5032.24%$0.90$1.203911
—————$195.0031.15%$1.35$1.6510820
012$6.20$7.30—$197.5031.22%$2.05$2.454200
16$4.90$5.40—$200.0030.52%$2.95$3.30505
014$3.60$4.1030.70%$202.50—$4.10$4.602023
3750$2.55$3.0030.55%$205.00—$5.10$6.305938
106$1.70$2.0529.93%$207.50—$6.60$8.10120
640$1.10$1.4029.83%$210.00—$8.60$9.701266
531$0.65$1.0530.33%$212.50—$10.30$12.4050
—————$215.00—$12.70$14.60460
—————$217.50—$15.00$17.0001
—————$220.00—$17.00$20.10630
—————$225.00—$22.20$25.2070

Forward $202.00. The 25-delta put carries +1.32 volatility points over the 25-delta call.

2026-10-09(17 days)ATM 29.61%±12.92skew +1.84
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$190.0031.52%$1.15$1.452530
—————$192.5030.82%$1.55$1.9503
01$8.70$10.30—$195.0030.63%$2.25$2.553157
—————$197.5030.36%$3.00$3.401111
02$5.60$6.80—$200.0029.65%$3.90$4.301511
10$4.70$5.3029.61%$202.50—$5.10$5.5006
1111$3.60$4.1029.31%$205.00—$6.40$6.802312
30$2.70$3.1029.07%$207.50—$7.30$9.0003
952$1.95$2.3528.97%$210.00—$9.00$10.904315
1529$0.95$1.3029.00%$215.00—$12.80$15.20310
08$0.65$1.0029.40%$217.50—————
2346$0.45$0.7529.79%$220.00—$17.40$19.50510
—————$225.00—$22.00$24.90650

Forward $202.20. The 25-delta put carries +1.84 volatility points over the 25-delta call.

2026-10-16(24 days)ATM 29.50%±15.30skew +2.05
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$60.50$63.90—$140.00—————
113$30.90$33.80—$170.00—————
010$22.00$23.80—$180.0033.44%$0.55$0.758114
01$17.50$19.30—$185.0031.69%$0.85$1.3013955
010$13.40$15.00—$190.0030.97%$1.75$2.0537331
—————$192.5030.64%$2.30$2.65019
13$9.70$11.10—$195.0030.03%$2.85$3.4047019
—————$197.5029.64%$3.70$4.201295
6146$6.90$7.60—$200.0028.88%$4.60$5.1076472
1217$5.70$6.3029.54%$202.50—$5.80$6.60373
54$4.40$5.1028.89%$205.00—$6.90$8.2053
15$3.60$4.1029.16%$207.50—$8.10$9.8050
27681$2.75$3.2028.80%$210.00—$10.00$11.504655
157$2.10$2.4528.60%$212.50—————
1326$1.55$1.9028.52%$215.00—————
775$1.15$1.4528.54%$217.50—————
23931$0.85$1.0528.42%$220.00—$17.60$20.002893
—————$230.00—$26.70$30.00100

Forward $202.30. The 25-delta put carries +2.05 volatility points over the 25-delta call.

2026-10-23(31 days)ATM 32.17%±19.00skew +2.54
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$170.0039.33%$0.45$0.7009
—————$180.0037.75%$1.15$1.8501
—————$185.0036.16%$1.75$2.604244
—————$190.0035.33%$2.80$3.701362
01$11.10$12.90—$195.0034.48%$4.30$5.10180
25$9.00$9.60—$200.0033.90%$6.30$7.001772
49$5.60$7.2031.80%$205.00—$8.50$10.30250
231$3.80$5.2031.82%$210.00—$11.50$13.10273
2136$2.80$3.7032.79%$215.00—$14.80$16.70620
7189$1.75$2.4032.20%$220.00—$18.50$20.60250
—————$225.00—$23.10$25.4010
—————$235.00—$31.90$34.9010

Forward $202.66. The 25-delta put carries +2.54 volatility points over the 25-delta call.

2026-10-30(38 days)ATM 33.75%±22.05skew +1.53
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$170.0038.77%$0.65$1.0512
—————$180.0036.74%$1.55$2.2580
—————$185.0035.88%$2.35$3.20130
—————$190.0034.34%$3.40$4.2073
—————$195.0034.90%$4.90$6.40510
—————$200.0034.26%$6.80$8.50170
23$7.10$8.1033.68%$205.00—$9.30$10.9040
016$5.10$6.3033.86%$210.00—$12.00$13.90150
017$3.50$4.6033.40%$215.00—————
312$2.40$3.1032.80%$220.00—————
314$1.60$2.1532.73%$225.00—————
520$1.00$1.6533.24%$230.00—————

Forward $202.49. The 25-delta put carries +1.53 volatility points over the 25-delta call.

2026-11-20(59 days)ATM 32.69%±26.63skew +2.53
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
10$61.10$64.50—$140.00—————
—————$160.0038.90%$0.60$1.00011
—————$170.0037.67%$1.40$2.0021
—————$175.0036.28%$2.00$2.50235
120$24.10$26.40—$180.0035.33%$2.90$3.204326
—————$185.0034.50%$3.90$4.30413
12$16.90$18.80—$190.0033.96%$5.30$5.704622
—————$195.0033.68%$7.10$7.501328
612$11.70$12.30—$200.0033.22%$9.20$9.6011522
22138$7.10$7.5032.16%$210.00—$14.60$15.102017
22369$4.00$4.5031.96%$220.00—$20.90$22.5020
9135$2.15$2.5031.83%$230.00—————
1429$1.00$1.3531.57%$240.00—————
6229$0.45$0.7531.82%$250.00—————

Forward $202.62. The 25-delta put carries +2.53 volatility points over the 25-delta call.

2026-12-18(87 days)ATM 31.39%±31.12skew +2.40
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
03$71.10$74.70—$130.00—————
011$66.20$69.50—$135.00—————
028$61.60$64.40—$140.00—————
137$56.80$59.50—$145.00—————
083$52.00$55.00—$150.0038.94%$0.60$0.952790
022$47.10$50.00—$155.00—————
026$42.60$45.10—$160.00—————
240$38.30$40.70—$165.0035.67%$1.70$1.901,04814
131$34.40$35.80—$170.0035.12%$2.35$2.555463
042$30.20$32.00—$175.0034.48%$3.10$3.407701
0162$25.90$28.20—$180.0033.67%$4.00$4.406366
0121$22.40$24.10—$185.0033.15%$5.30$5.6028815
3161$18.80$20.70—$190.0032.61%$6.80$7.105104
1542$15.80$17.30—$195.0032.27%$8.60$9.003969
18233$13.70$14.20—$200.0031.92%$10.70$11.201,23290
40536$9.00$9.4031.03%$210.00—$16.00$16.4096411
36822$5.50$6.2030.68%$220.00—$22.10$23.306141
36894$3.40$3.9030.75%$230.00—$29.80$32.001490
6820$2.00$2.4030.82%$240.00—$38.10$40.90300
23625$1.05$1.5030.82%$250.00—$47.30$50.10830
—————$260.00—$56.60$60.10210

Forward $203.03. The 25-delta put carries +2.40 volatility points over the 25-delta call.

2027-01-15(115 days)ATM 30.99%±35.41skew +2.75
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
214$71.90$74.60—$130.00—————
236$67.40$69.90—$135.00—————
231$62.40$65.10—$140.0040.42%$0.60$0.951990
124$57.70$60.30—$145.00—————
097$53.00$55.70—$150.00—————
036$48.40$51.30—$155.0037.27%$1.35$1.951,3070
063$43.90$46.60—$160.0035.78%$1.75$2.255440
0103$39.50$42.40—$165.0035.09%$2.35$2.859460
0152$35.30$38.00—$170.0034.27%$3.10$3.502,4128
085$31.60$33.80—$175.0033.46%$4.00$4.305964
0207$27.40$29.80—$180.0033.03%$5.10$5.501,3679
10190$24.20$26.00—$185.0032.42%$6.40$6.8079919
0417$20.60$22.60—$190.0031.87%$7.90$8.406501
2173$17.60$19.30—$195.0031.56%$9.80$10.301,51219
14851$15.10$16.40—$200.0031.22%$12.00$12.401,65947
162,401$10.90$11.4030.86%$210.00—$17.20$17.801,1391
153,578$7.30$7.6030.15%$220.00—$23.30$25.101,4446
912,193$4.70$4.9029.67%$230.00—$30.40$32.701,1790
142,303$2.90$3.4029.86%$240.00—$38.80$41.301660
02,108$1.90$2.2530.25%$250.00—$47.70$50.201681
0970$1.10$1.4530.17%$260.00—$57.20$60.002400

Forward $203.60. The 25-delta put carries +2.75 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.