Options Skew Analytics

BK option chain

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

Data as of 29 September 2025 (end of day)

2025-11-21(53 days)ATM 26.94%±11.28skew +6.14
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
03$38.80$41.20—$70.00—————
—————$90.0036.23%$0.40$0.50024
—————$95.0033.58%$0.75$0.90180
—————$97.5031.94%$1.00$1.15291
026$11.10$11.50—$100.0030.73%$1.35$1.55321
253$7.40$7.80—$105.0028.89%$2.50$2.804642
1745$4.30$4.6027.10%$110.00—$4.40$4.7040
2576$2.15$2.4025.60%$115.00—————
16741$0.85$1.1524.59%$120.00—$11.00$11.8040
29$0.35$0.4524.24%$125.00—————

Forward $109.90. The 25-delta put carries +6.14 volatility points over the 25-delta call.

2025-12-19(81 days)ATM 26.17%±13.59skew +5.41
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
082$53.20$56.70—$55.00—————
06$43.60$46.10—$65.00—————
01$40.80$43.70—$67.50—————
02$38.70$41.20—$70.00—————
013$33.60$36.30—$75.00—————
04$31.00$34.10—$77.50—————
174$29.90$30.90—$80.00—————
04$26.20$29.10—$82.50—————
087$24.70$25.80—$85.0036.18%$0.35$0.552390
071$22.60$23.60—$87.5034.86%$0.50$0.658670
3187$20.50$21.00—$90.0033.45%$0.65$0.80980
0189$18.40$18.70—$92.5032.44%$0.90$1.00841
0186$16.20$16.50—$95.0031.34%$1.15$1.302654
0175$13.10$14.40—$97.5030.09%$1.50$1.603331
111,488$11.60$12.40—$100.0029.46%$1.95$2.157031
51,670$8.40$8.80—$105.0027.81%$3.20$3.5057218
3859$5.40$5.70—$110.0026.46%$5.20$5.40482
58500$3.10$3.4025.15%$115.00—$7.90$8.2080
1398$1.60$1.8024.06%$120.00—$11.50$11.9040
332$0.75$0.9023.50%$125.00—————
021$0.30$0.4523.23%$130.00—————

Forward $110.25. The 25-delta put carries +5.41 volatility points over the 25-delta call.

2026-01-16(109 days)ATM 26.83%±16.21skew +4.63
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
0209$42.50$43.10—$67.50—————
02,318$39.90$40.70—$70.00—————
0312$37.70$38.20—$72.50—————
0244$35.00$35.80—$75.00—————
0660$33.00$33.40—$77.50—————
0700$30.60$30.90—$80.00—————
0326$28.20$28.60—$82.5036.26%$0.50$0.651440
5449$25.90$27.90—$85.00—————
0147$23.60$24.20—$87.5034.58%$0.80$1.101,5540
01,135$21.30$21.70—$90.0032.81%$1.00$1.206701
0472$19.10$19.50—$92.5031.82%$1.30$1.451,8090
0384$17.00$17.40—$95.0031.11%$1.65$1.851940
0671$14.60$15.30—$97.5030.21%$2.05$2.301751
0280$12.10$13.40—$100.0029.54%$2.60$2.85635500
0468$9.50$9.90—$105.0028.16%$4.00$4.30110293
1257$6.60$6.90—$110.0027.26%$6.00$6.40120
202416$4.20$4.5025.97%$115.00—$8.60$9.10120
4163$2.50$2.7024.90%$120.00—————
341$1.40$1.5524.28%$125.00—————
011$0.75$0.9024.13%$130.00—————
01$0.35$0.5524.13%$135.00—————

Forward $110.56. The 25-delta put carries +4.63 volatility points over the 25-delta call.

2026-03-20(172 days)ATM 26.51%±20.18skew +5.84
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
05$48.50$51.20—$60.00—————
03$44.10$46.40—$65.00—————
01$40.90$45.10—$67.50—————
047$39.40$41.00—$70.00—————
088$34.00$37.90—$75.00—————
0121$32.40$34.20—$77.50—————
0148$30.80$31.70—$80.00—————
046$27.90$29.40—$82.50—————
043$25.70$27.30—$85.0033.38%$1.00$1.65780
031$23.60$25.10—$87.5033.21%$1.40$2.001540
056$21.50$22.90—$90.0032.62%$1.60$2.551470
099$19.90$20.80—$92.5031.84%$2.20$2.75440
0140$17.50$18.90—$95.0030.89%$2.60$3.202940
015$16.40$16.70—$97.5029.99%$3.30$3.50480
359$14.60$14.90—$100.0029.41%$3.90$4.20560
0216$11.10$11.50—$105.0028.16%$5.50$5.706870
5150$8.30$8.70—$110.0027.20%$7.50$7.80140
3127$5.90$6.1025.93%$115.00—$10.00$10.4040
085$3.90$4.2024.91%$120.00—$13.10$13.50100
536$2.50$2.7524.15%$125.00—————
015$1.50$1.8023.65%$130.00—————

Forward $110.87. The 25-delta put carries +5.84 volatility points over the 25-delta call.

2026-06-18(262 days)ATM 25.96%±24.50skew +5.70
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
0350$50.10$51.00—$60.00—————
1119$40.00$41.50—$70.00—————
02$36.90$41.10—$72.50—————
011$35.30$38.00—$75.0037.27%$1.05$1.75790
06$33.10$35.80—$77.50—————
063$31.20$33.80—$80.0034.73%$1.35$2.152370
022$28.70$30.70—$82.50—————
0557$27.50$28.70—$85.0032.46%$1.85$2.605640
013$24.50$27.30—$87.5032.14%$2.35$3.00260
0771$23.60$25.90—$90.0032.18%$2.85$3.709510
070$21.60$22.50—$92.5031.24%$3.50$3.9042367
056$19.60$20.40—$95.0030.22%$3.90$4.401,6600
056$17.90$18.60—$97.5029.54%$4.50$5.008660
0540$16.10$17.30—$100.0028.82%$5.10$5.701,0840
0117$12.90$13.80—$105.0027.91%$6.80$7.401,3760
048$10.00$10.80—$110.00—————
035$7.60$8.3025.80%$115.00—————
048$5.50$6.3025.00%$120.00—————
06$4.00$4.5024.29%$125.00—————
061$2.75$3.3023.85%$130.00—————
01$1.25$1.7523.46%$140.00—————

Forward $111.42. The 25-delta put carries +5.70 volatility points over the 25-delta call.

2026-09-18(354 days)ATM 26.19%±28.89skew +6.34
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$40.00$43.40—$70.00—————
0138$36.90$37.70—$75.0034.86%$1.35$2.25150
01,008$32.80$33.40—$80.00—————
09$28.60$32.40—$82.5032.52%$2.40$2.95680
—————$85.0032.92%$2.75$3.90380
03$26.80$27.50—$87.5031.46%$3.30$3.80930
02$24.90$25.50—$90.0030.89%$3.80$4.3020860
01$22.90$23.60—$92.5032.71%$4.40$6.3070
037$20.70$22.10—$95.0029.90%$5.00$5.501530
043$19.30$20.30—$97.5029.45%$5.60$6.30260
011$17.60$18.60—$100.0028.41%$6.00$7.00740
071$14.60$15.40—$105.0027.84%$7.70$9.00190
015$11.60$12.60—$110.0026.43%$9.00$11.30100
024$9.40$10.4026.27%$115.00—————
015$7.20$8.1025.25%$120.00—————
06$5.60$6.0024.43%$125.00—————
02$4.10$4.7023.98%$130.00—————
027$2.95$3.6023.56%$135.00—————
059$2.10$2.5522.95%$140.00—————

Forward $112.02. The 25-delta put carries +6.34 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.