Options Skew Analytics

SPGI option chain

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

Data as of 23 September 2026 (end of day)

2026-10-16(23 days)ATM 25.16%±25.86skew +2.00
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$27.30$33.60—$380.0029.72%$2.00$2.9053216
—————$382.5028.16%$2.10$2.9040
—————$385.0027.89%$2.50$3.3081
—————$390.0027.31%$3.40$4.3022811
—————$392.5026.97%$4.00$4.8040
—————$395.0026.88%$4.80$5.4010
—————$397.5026.84%$5.50$6.3010
057$15.50$17.00—$400.0026.71%$6.30$7.207083
—————$402.5027.51%$7.00$9.10660
—————$405.0025.56%$7.30$9.40542
03$11.00$13.40—$407.5026.28%$9.00$10.601110
6705$8.60$11.4025.16%$410.00—$9.90$11.307413
—————$412.50—$11.60$13.20110
34$6.60$9.1025.28%$415.00—————
03$6.40$7.6025.55%$417.50—$14.60$15.60044
2672$5.90$6.7026.01%$420.00—$16.00$19.604920
013$3.40$5.1024.48%$425.00—————
01$3.20$4.4024.97%$427.50—————
397$2.75$3.8025.06%$430.00—$22.90$27.401300
04$2.00$2.9025.40%$435.00—————
12256$1.55$2.1525.88%$440.00—$31.00$36.002000

Forward $409.40. The 25-delta put carries +2.00 volatility points over the 25-delta call.

2026-11-20(58 days)ATM 28.92%±47.38skew +2.08
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$350.0033.63%$2.20$3.502250
—————$360.0032.48%$3.30$4.60613
14$43.10$48.40—$370.0031.06%$5.00$5.601516
02$36.50$40.10—$380.0030.22%$6.70$8.005913
01$30.40$32.40—$390.0029.98%$9.80$10.901375
117$23.90$25.70—$400.0028.76%$12.80$14.201694
088$18.30$20.10—$410.0028.92%$17.80$18.80661
756$14.30$15.3028.92%$420.00—$22.80$24.20370
551$10.50$11.7028.78%$430.00—$28.90$33.101850
4177$7.60$8.3028.30%$440.00—$36.10$40.00200
18111$5.30$6.0028.13%$450.00—$43.30$48.90640
523$3.50$4.2027.81%$460.00—$51.60$56.9040
158$1.95$3.2027.59%$470.00—$60.80$66.1020
—————$480.00—$70.40$76.4020

Forward $410.91. The 25-delta put carries +2.08 volatility points over the 25-delta call.

2026-12-18(86 days)ATM 28.34%±56.65skew +2.65
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$156.10$163.90—$250.00—————
01$127.10$133.20—$280.00—————
02$107.70$113.90—$300.00—————
01$79.90$85.60—$330.0034.68%$2.10$3.30100
010$71.00$76.50—$340.00—————
526$62.20$67.90—$350.0032.86%$3.80$5.80350
1014$53.50$59.50—$360.0031.56%$5.70$6.50440
011$45.80$50.90—$370.0030.94%$7.80$8.405720
03$38.40$43.30—$380.0030.19%$10.00$11.00563
01$32.10$36.10—$390.0029.40%$12.90$13.90622
05$26.10$29.90—$400.0029.15%$16.60$18.00793
125$23.10$24.20—$410.0028.88%$21.50$22.20370
017$17.50$19.6028.07%$420.00—$26.30$27.60320
014$14.30$15.3028.12%$430.00—$32.10$35.10451
134$10.90$12.4028.14%$440.00—$38.30$42.80210
318$8.30$9.0027.54%$450.00—$45.40$50.30130
354$6.10$6.9027.39%$460.00—$53.20$58.60230
0289$3.90$5.3026.85%$470.00—$61.90$67.4030
4245$2.90$4.4027.47%$480.00—————
08$2.60$3.1027.94%$490.00—————
—————$500.00—$90.10$96.20017

Forward $411.82. The 25-delta put carries +2.65 volatility points over the 25-delta call.

2027-01-15(114 days)ATM 28.04%±64.67skew +2.41
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
05$147.80$154.80—$260.00—————
02$109.40$115.60—$300.00—————
01$91.00$97.90—$320.00—————
06$82.00$88.80—$330.00—————
01$73.00$78.80—$340.00—————
012$64.50$70.60—$350.0031.70%$5.50$7.10440
07$56.90$62.70—$360.0030.81%$7.50$8.401670
0201$49.40$53.70—$370.0030.21%$9.70$10.60560
0200$42.40$46.50—$380.0029.61%$12.30$13.30649
04$36.30$40.70—$390.0028.73%$15.00$16.40660
012$30.90$33.90—$400.0028.81%$19.10$20.806242
240$25.30$28.40—$410.0028.21%$23.20$25.20920
040$20.80$23.6028.03%$420.00—$28.20$30.40240
044$17.80$19.7028.53%$430.00—$33.30$36.90380
016$13.70$15.8027.79%$440.00—$40.30$44.605030
276$11.30$12.4027.71%$450.00—$47.10$51.90820
750$8.80$10.3027.80%$460.00—$54.60$60.60100
031$6.80$7.6027.23%$470.00—$62.90$68.3010
080$4.80$6.1026.92%$480.00—$71.70$77.9010
—————$490.00—$80.90$86.4050

Forward $412.69. The 25-delta put carries +2.41 volatility points over the 25-delta call.

2027-02-19(149 days)ATM 29.21%±77.31skew +3.44
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
—————$330.0034.03%$4.60$7.40220
—————$340.0032.89%$5.80$8.60210
—————$350.0032.47%$7.40$10.80400
01$61.20$67.30—$360.0031.80%$9.40$12.90110
01$54.00$59.90—$370.0031.43%$12.00$15.60710
—————$380.0030.87%$14.70$18.7010
03$41.10$46.20—$390.00—————
04$35.50$39.90—$400.0030.11%$21.90$26.4050
021$30.30$35.40—$410.0029.79%$26.50$30.80200
06$25.50$30.0029.21%$420.00—$31.30$36.3090
05$21.20$26.2029.18%$430.00—$37.10$42.20120
03$17.50$21.3028.44%$440.00—————
013$14.30$18.1028.33%$450.00—$49.80$56.0010
012$11.50$15.0028.02%$460.00—$57.80$63.7010
02$9.20$12.7027.99%$470.00—————
011$7.20$10.6027.84%$480.00—————
07$5.70$9.0027.94%$490.00—————
022$4.30$6.9027.34%$500.00—————
—————$520.00—$110.30$116.3011

Forward $414.27. The 25-delta put carries +3.44 volatility points over the 25-delta call.

2027-03-19(177 days)ATM 29.01%±83.82skew +2.62
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$122.60$128.10—$290.00—————
—————$310.0034.97%$4.10$5.5010
05$96.30$101.60—$320.0034.64%$4.80$7.5040
—————$330.0033.65%$6.60$8.10800
03$79.50$84.90—$340.0032.66%$8.10$9.40100
02$71.40$77.20—$350.0032.18%$10.20$11.30190
—————$360.0031.66%$12.50$13.60861
01$57.50$62.80—$370.0030.83%$14.70$16.10150
02$51.30$55.90—$380.0030.72%$18.40$19.2060
112$45.30$48.40—$390.0030.47%$22.00$23.0070
06$39.70$42.30—$400.0029.92%$25.50$27.10192
08$34.00$37.40—$410.0029.65%$30.40$31.30160
18$29.40$32.0029.20%$420.00—$35.20$36.30250
116$24.80$27.5028.75%$430.00—$40.80$41.80470
04$22.40$23.5029.12%$440.00—$46.70$47.90130
110$18.30$20.0028.58%$450.00—$51.70$56.9030
116$14.90$16.7028.06%$460.00—$58.30$63.8010
153$13.30$14.1028.39%$470.00—————
019$11.00$11.8028.21%$480.00—————
053$8.60$9.8027.76%$490.00—————
941$7.00$8.2027.68%$500.00—————

Forward $414.95. The 25-delta put carries +2.62 volatility points over the 25-delta call.

2027-06-17(267 days)ATM 29.63%±106.01skew +4.02
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$102.60$108.60—$320.0033.51%$7.60$11.40750
018$95.30$100.10—$330.0033.93%$10.40$13.80390
—————$340.0033.26%$12.50$15.60150
215$79.90$85.60—$350.0032.75%$14.70$18.10590
02$73.00$78.70—$360.0032.27%$17.20$20.90210
02$66.20$72.40—$370.0031.72%$20.30$23.50460
02$60.00$65.80—$380.0031.25%$23.50$26.80970
03$53.90$59.70—$390.0031.16%$27.00$31.4070
06$48.60$53.70—$400.0030.80%$30.90$35.60290
212$43.60$48.10—$410.0030.49%$35.60$39.80142
06$38.70$43.3030.25%$420.00—$40.20$45.00120
010$33.90$38.4029.72%$430.00—$45.30$50.5070
028$29.30$34.4029.34%$440.00—$50.90$56.30300
023$25.70$30.7029.18%$450.00—$57.50$62.50350
06$21.80$27.5028.86%$460.00—$64.00$69.4060
04$18.90$24.1028.61%$470.00—————
019$16.20$21.3028.43%$480.00—$79.40$84.0030
035$15.60$18.1028.72%$490.00—————
010$11.80$16.3028.05%$500.00—$94.40$100.4010
01$9.90$15.1028.26%$510.00—————
057$8.20$13.1027.99%$520.00—$112.40$117.70160

Forward $418.35. The 25-delta put carries +4.02 volatility points over the 25-delta call.

2027-09-17(359 days)ATM 29.82%±125.07skew +2.90
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$116.00$122.60—$310.0034.52%$10.20$13.10120
—————$320.0034.21%$12.00$15.4010
01$101.00$108.00—$330.0033.83%$14.20$17.60120
02$95.00$101.00—$340.0033.34%$16.30$20.1010
01$87.00$94.00—$350.0032.13%$16.80$22.9010
02$81.40$87.20—$360.0031.83%$19.70$25.9070
03$74.00$80.80—$370.0031.59%$22.90$29.3010
01$67.00$74.90—$380.00—————
—————$390.0031.17%$30.40$36.9020
04$57.20$63.10—$400.0030.75%$35.10$40.0040
01$52.00$59.00—$410.0030.83%$39.10$45.9020
02$46.80$53.00—$420.0030.49%$44.00$50.20150
02$42.20$48.6030.27%$430.00—$49.00$56.2060
—————$440.00—$55.00$61.2020
01$33.80$39.6029.49%$450.00—————
02$26.70$32.0028.86%$470.00—————
02$23.50$29.7028.89%$480.00—————
12$20.60$27.4028.86%$490.00—————
011$18.10$24.3028.54%$500.00—$96.80$103.0020
02$12.10$19.7028.92%$530.00—————
012$10.60$15.4027.87%$540.00—————

Forward $422.92. The 25-delta put carries +2.90 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.

SPGI option chain | Options Skew Analytics