Options Skew Analytics

XBI 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 41.73%±4.81skew +3.80
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
28$6.75$8.45—$148.00—————
1118$6.30$7.95—$148.50—————
1030$5.85$7.50—$149.00—————
03$5.35$7.00—$149.50—————
131,042$5.70$6.35—$150.00—————
062$4.00$5.70—$151.00—————
—————$152.0045.02%$0.66$0.74249293
02$3.30$4.45—$152.5042.38%$0.60$0.8612823
2264$3.20$4.05—$153.00—————
1422$2.08$3.30—$154.0041.30%$0.95$1.351,2113,080
8966$2.00$2.46—$155.0042.65%$1.29$1.9419378
662271$1.52$2.0241.38%$156.00—$1.79$2.301,994158
11466$1.00$1.4538.79%$157.00—$2.18$2.993,0533
12826$0.80$1.2838.69%$157.50—$2.34$3.75522404
27148$0.67$1.0838.58%$158.00—$2.79$3.802398
—————$159.00—$3.45$4.75817
2472,565$0.33$0.4237.25%$160.00—$4.20$5.853,0823,019
28200$0.22$0.3238.51%$161.00—$5.05$5.906810
—————$162.00—$6.15$6.803611
—————$162.50—$6.40$8.1060
290258$0.09$0.1539.61%$163.00—$6.75$8.0580

Forward $155.72. The 25-delta put carries +3.80 volatility points over the 25-delta call.

2026-10-02(9 days)ATM 31.31%±7.66skew +3.75
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$8.75$9.85—$147.00—————
—————$148.0035.61%$0.63$1.031610,010
—————$149.0033.34%$0.70$1.065586
—————$149.5033.16%$0.75$1.2037
22$5.95$7.45—$150.0035.22%$0.94$1.55164422
211$5.20$6.15—$151.0032.80%$1.12$1.53278
04$5.15$5.45—$152.0032.93%$1.37$1.911556
—————$152.5032.31%$1.50$2.013353
433$4.25$4.75—$153.0032.15%$1.68$2.161036
390$3.80$4.30—$154.0031.83%$2.04$2.53565
1139$3.35$3.60—$155.0032.65%$2.69$2.933363,034
11343$2.82$3.0531.30%$156.00—$2.90$3.458526
1019$2.29$2.8131.99%$157.00—$3.45$4.0023790
36$2.03$2.3730.50%$157.50—$3.80$4.3026
2072$1.88$2.3531.65%$158.00—$4.05$4.60127109
1113$1.61$1.8231.13%$159.00—$4.45$5.25151
2748$1.34$1.5131.30%$160.00—$5.45$5.958411
1712$1.10$1.2531.46%$161.00—$5.95$6.90416
79656$0.81$1.0531.18%$162.00—$6.60$7.5017616
1010$0.62$0.9330.33%$162.50—$6.95$8.6020
—————$164.00—$8.45$9.60653

Forward $155.76. The 25-delta put carries +3.75 volatility points over the 25-delta call.

2026-10-09(16 days)ATM 30.39%±9.90skew +1.09
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$146.0033.09%$0.89$1.1311121
02$8.25$10.05—$148.0034.04%$1.27$1.8030
—————$149.0031.80%$1.35$1.7903
—————$150.0032.31%$1.76$2.0645217
—————$151.0032.50%$1.99$2.5270
—————$152.0030.18%$2.03$2.6416
—————$152.5031.17%$2.37$2.92485
—————$153.0031.77%$2.59$3.2521
03$4.25$5.20—$154.0031.17%$3.05$3.50151
216$4.25$4.65—$155.0030.64%$3.50$3.85163
427$3.35$4.1530.39%$156.00—$3.90$4.40846
01$3.10$3.6530.97%$157.00—$4.30$5.35262
651$2.84$3.2531.62%$158.00—$4.95$5.4520
40$2.46$2.9832.04%$159.00—$5.50$6.1041
1720$2.12$2.4731.36%$160.00—$6.10$6.705722
—————$161.00—$6.85$7.4511
1116$1.41$1.8730.67%$162.00—$7.60$8.2010
010$1.25$1.7430.46%$162.50—————
31$1.07$1.7430.71%$163.00—$7.45$9.6560
03$1.05$1.5231.66%$164.00—$8.85$10.3044
622$1.01$1.2031.78%$165.00—$9.75$11.3540

Forward $155.60. The 25-delta put carries +1.09 volatility points over the 25-delta call.

2026-10-16(23 days)ATM 32.33%±12.67skew +2.58
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
126$9.05$10.65—$148.0034.22%$1.82$2.44823164
1220$8.60$9.80—$149.0034.25%$2.37$2.493,6701,419
61345$8.35$9.00—$150.0033.69%$2.45$2.9018,1314,985
09$7.10$8.50—$151.0033.77%$2.67$3.409186
014$6.95$7.85—$152.0032.65%$3.00$3.502347
260$6.30$7.35—$152.5033.34%$3.20$3.905428
531$6.35$7.10—$153.0033.46%$3.40$4.157,1271,252
4489$5.70$6.65—$154.0032.90%$3.90$4.355,3501,753
258658$5.30$5.80—$155.0033.27%$4.50$4.801,32574
7535$4.85$5.35—$156.0032.49%$4.75$5.301,26583
47204$4.25$4.9532.29%$157.00—$5.15$5.90650509
—————$157.50—$4.50$6.45550
050$3.55$4.8532.54%$158.00—$5.75$6.754028
441$3.15$4.0031.12%$159.00—$6.30$7.2583732
466946$3.15$3.5031.95%$160.00—$6.95$7.552,788133
133$2.52$3.2531.32%$161.00—$7.50$8.504390
1,159142$2.47$2.7331.55%$162.00—$8.15$9.30585500
—————$162.50—$7.45$9.8040
188$1.88$2.5630.90%$163.00—$8.80$10.102880
275$1.75$2.2531.21%$164.00—$9.45$10.601784
2132,450$1.69$1.9431.64%$165.00—$10.25$11.552,3290

Forward $156.08. The 25-delta put carries +2.58 volatility points over the 25-delta call.

2026-10-23(30 days)ATM 31.03%±13.88skew +2.96
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$146.0032.70%$1.54$2.4481
—————$147.0033.47%$2.01$2.7224
—————$148.0031.91%$1.88$2.98102
10$9.50$10.25—$149.0033.28%$2.60$3.30853
10$8.75$9.50—$150.0033.38%$2.97$3.65324
10$7.65$9.05—$151.0033.04%$3.30$3.9561
—————$152.0029.83%$2.81$4.1544
—————$153.0031.92%$4.05$4.4565
02$5.95$7.15—$154.0032.23%$4.60$4.90304
13$5.70$6.80—$155.0032.37%$4.95$5.558533
—————$156.0030.24%$4.55$6.20510
—————$157.00—$4.70$6.65230
—————$157.50—$5.10$7.10120
11$4.45$5.7033.64%$158.00—$6.30$7.4545
—————$159.00—$7.00$7.95323
42$3.45$4.3031.35%$160.00—$7.40$8.65900
—————$162.00—$7.65$10.0020
—————$162.50—$8.00$10.8530
01$2.75$3.1531.80%$163.00—$9.55$10.8033
27$1.50$2.4430.51%$166.00—$11.55$13.00015
233$1.55$2.2031.39%$167.00—$12.15$13.75410

Forward $156.00. The 25-delta put carries +2.96 volatility points over the 25-delta call.

2026-11-20(58 days)ATM 30.65%±19.17skew +3.33
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$147.0033.51%$3.70$4.403,02532
—————$148.0032.50%$3.55$4.80371
03$11.05$12.10—$150.0032.91%$4.80$5.2062275
—————$151.0033.13%$5.20$5.707269
30$9.75$10.90—$152.0032.95%$5.50$6.15140153
110$8.90$10.40—$153.0035.50%$5.95$7.802503
50$8.30$9.75—$154.0032.98%$6.45$7.0008
350$7.80$9.10—$155.0033.18%$6.85$7.6501
—————$156.0030.76%$6.00$8.3070
50$6.80$8.3030.61%$157.00—$6.70$8.5510
540$6.40$7.8030.66%$158.00—$8.40$9.1006
618$6.05$7.1530.41%$159.00—$8.80$9.7504
1815$5.85$6.7030.80%$160.00—$9.35$10.10015
37218$5.60$5.9030.29%$161.00—$10.00$11.0073
6104$4.90$5.8530.31%$162.00—$10.50$11.6510
1102$4.70$5.5030.67%$163.00—————
0103$4.15$5.6031.17%$164.00—————
28118$3.85$4.7530.11%$165.00—$12.60$13.40021
350$3.65$4.4530.35%$166.00—$13.05$14.0003
416$3.35$4.1030.19%$167.00—————
18$3.00$3.9030.18%$168.00—————

Forward $156.92. The 25-delta put carries +3.33 volatility points over the 25-delta call.

2026-12-18(86 days)ATM 31.55%±24.07skew +1.34
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
014$20.95$22.25—$138.0032.74%$2.34$3.052062
013$20.10$21.55—$139.0033.07%$2.55$3.45412
0635$19.15$20.80—$140.0032.60%$2.80$3.5076911
058$18.05$20.00—$141.00—————
023$17.75$19.25—$142.0032.11%$3.05$4.104502
087$16.75$18.55—$143.0031.84%$3.30$4.301152
02,018$15.90$17.85—$144.00—————
05,783$14.90$17.15—$145.0031.96%$4.00$4.904160
08$14.90$16.70—$146.0030.47%$3.60$5.20410
018$14.25$16.05—$147.0030.22%$3.85$5.503,0700
043$13.25$15.30—$148.0029.63%$3.75$6.002,5460
027$12.75$14.75—$149.0029.56%$4.10$6.351750
53,257$12.50$13.90—$150.0032.55%$6.20$6.702,144106
55386$10.25$11.25—$155.0032.28%$8.30$8.958115
2983$8.00$8.3531.34%$160.00—$9.85$11.653,7810
1062,551$5.40$6.5530.32%$165.00—$13.15$14.652,6020
376,125$4.45$4.9031.11%$170.00—$17.10$18.203550
071$2.89$4.5531.26%$174.00—$19.10$21.701050
2,2173,475$3.40$3.6531.36%$175.00—$21.30$21.959230
4166$2.62$3.6030.50%$176.00—$20.85$23.15460
0169$2.30$3.8031.08%$177.00—$21.60$24.15260

Forward $157.15. The 25-delta put carries +1.34 volatility points over the 25-delta call.

2027-01-15(114 days)ATM 31.44%±27.66skew -0.45
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
062$21.70$23.75—$138.00—————
4188$21.00$23.00—$139.00—————
21,051$20.30$22.00—$140.0032.88%$3.90$4.603,4552
031$19.35$21.60—$141.00—————
097$18.80$20.90—$142.00—————
053$18.10$20.20—$143.0030.59%$3.45$5.60280
0109$17.50$19.55—$144.0030.61%$3.75$5.95900
2216$16.40$18.60—$145.0032.51%$5.40$6.101440
015$16.15$18.20—$146.0030.33%$4.40$6.50150
0896$15.40$17.60—$147.0030.62%$4.75$7.05190
013$14.35$16.95—$148.0030.76%$5.30$7.35310
042$13.75$16.35—$149.0032.27%$6.85$7.553366
483,650$13.80$15.45—$150.0032.06%$7.25$7.854,857255
41,134$11.70$12.65—$155.0030.91%$8.70$10.204,09521
1033,360$9.45$10.0531.44%$160.00—$11.75$12.8081678
2,9611,807$7.45$7.5530.55%$165.00—$14.50$15.9011146
731,611$5.05$6.2529.83%$170.00—$18.20$19.301495
047$4.10$5.1529.96%$174.00—$19.95$22.35200
1,0894,501$4.00$4.9030.18%$175.00—$21.05$23.30490
046$3.70$5.2531.04%$176.00—————
—————$177.00—$22.35$24.9010

Forward $157.44. The 25-delta put carries -0.45 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.