Options Skew Analytics

SPGI option chain

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

Data as of 9 November 2026 (end of day)

2026-11-13(4 days)ATM 29.62%±14.67skew +3.76
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
02$54.20$59.50—$415.00—————
01$49.30$55.30—$420.00—————
01$44.30$50.10—$425.00—————
05$39.40$45.70—$430.00—————
027$35.40$40.20—$435.00—————
012$32.00$37.20—$437.50—————
07$29.60$35.20—$440.00—————
013$24.80$30.10—$445.00—————
04$20.10$25.60—$450.00—————
01$15.60$21.30—$455.00—————
0241$13.00$18.70—$457.50—————
4858$14.60$16.00—$460.0033.80%$1.60$2.3501
123$10.70$14.60—$462.50—————
01$10.60$12.10—$465.0032.37%$2.70$3.4010
013$8.60$9.90—$467.5031.05%$3.20$4.10100
012$7.20$8.50—$470.00—————
560$5.80$6.60—$472.50—————
02$4.50$5.5029.47%$475.00—$6.40$7.10069
03$3.40$4.5029.38%$477.50—————
1320$2.60$3.4028.93%$480.00—$9.30$10.6060
110$1.60$2.1530.04%$485.00—————

Forward $473.25. The 25-delta put carries +3.76 volatility points over the 25-delta call.

2026-11-20(11 days)ATM 28.54%±23.44skew +2.56
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
03$28.60$34.90—$442.50—————
08$27.10$33.80—$445.00—————
0335$25.40$27.70—$450.0032.36%$2.10$3.201131
073$21.50$25.40—$452.5031.51%$2.55$3.40600
017$21.30$24.70—$455.0031.30%$3.00$4.001220
0—$17.30$21.10—$457.5030.25%$2.95$4.80—0
095$16.50$18.80—$460.0029.55%$3.70$5.10190
0—$15.10$16.90—$462.5030.57%$4.70$6.30—0
4736$12.90$16.20—$465.0028.58%$5.30$6.30340
7—$11.60$13.40—$467.5029.10%$6.20$7.70—0
0128$10.70$11.70—$470.0027.57%$7.20$7.9071
0—$8.70$10.30—$472.5028.20%$8.30$9.60—0
0145$8.00$9.0028.80%$475.00—$9.10$12.40200
0—$5.30$8.0026.44%$477.50—$10.70$12.10—0
0367$5.70$6.8028.25%$480.00—$11.80$13.0060
—————$482.50—$12.90$17.20—0
0—$3.60$5.4027.98%$485.00—$15.10$16.90—0
1180$2.65$3.6027.69%$490.00—————
15$1.90$3.1027.25%$492.50—————
1—$1.50$2.2026.24%$495.00—$22.80$28.10—0
—————$505.00—$31.80$37.00—0

Forward $473.05. The 25-delta put carries +2.56 volatility points over the 25-delta call.

2026-12-04(25 days)ATM 25.89%±32.10skew +1.45
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$70.10$77.60—$400.00—————
027$32.70$38.40—$440.00—————
—————$445.0028.60%$3.50$4.20012
05$24.40$31.10—$450.0028.29%$3.90$5.9060
01$17.00$19.20—$465.0026.65%$8.80$9.4020
216$13.80$15.50—$470.0025.77%$10.20$11.5010
12$11.60$12.8025.89%$475.00—————
01$9.40$10.3025.58%$480.00—$15.70$16.8070
015$5.60$6.8025.26%$490.00—————
015$3.60$5.1026.84%$500.00—————
120$2.85$3.7026.49%$505.00—————

Forward $473.81. The 25-delta put carries +1.45 volatility points over the 25-delta call.

2026-12-18(39 days)ATM 25.12%±38.96skew +1.74
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
02$169.40$177.80—$300.00—————
01$139.60$147.90—$330.00—————
018$129.80$136.90—$340.00—————
025$119.90$127.00—$350.00—————
015$110.00$117.10—$360.00—————
012$100.20$106.20—$370.00—————
08$90.40$96.50—$380.00—————
013$80.70$85.80—$390.00—————
029$71.10$76.30—$400.00—————
053$61.60$67.20—$410.00—————
0392$52.00$58.00—$420.0029.70%$1.95$2.355760
0156$43.00$49.70—$430.0029.10%$2.75$3.901122
175$36.60$40.90—$440.0027.44%$4.30$4.80398
0171$30.30$31.60—$450.0026.43%$6.20$6.901495
59158$23.00$25.30—$460.0026.03%$9.20$10.001422
24321$17.40$18.50—$470.0025.44%$13.00$13.902038
2246$12.40$13.4024.98%$480.00—$18.10$19.00343
140$8.60$9.5024.85%$490.00—$24.40$26.00780
557$5.70$6.5024.69%$500.00—$31.70$34.4020
3103$3.70$4.3024.65%$510.00—$39.20$44.6010
1198$2.10$3.3025.10%$520.00—————

Forward $474.52. The 25-delta put carries +1.74 volatility points over the 25-delta call.

2027-01-15(67 days)ATM 25.19%±51.42skew +2.64
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
06$121.50$127.60—$350.00—————
08$111.80$117.20—$360.00—————
0130$102.00$107.70—$370.00—————
0131$92.50$98.00—$380.00—————
016$83.10$88.80—$390.00—————
08$74.60$79.00—$400.00—————
047$65.80$70.20—$410.0029.73%$2.85$3.702442
074$57.40$61.50—$420.0028.84%$3.90$4.90921
077$48.40$53.00—$430.0027.47%$5.30$5.90872
072$39.30$44.80—$440.0026.88%$7.40$7.8049825
0126$33.30$36.80—$450.0026.23%$9.80$10.4025015
089$27.90$30.50—$460.0025.77%$13.00$13.70630
056$23.00$24.50—$470.0025.44%$17.10$17.70162
7189$17.90$19.4025.16%$480.00—$21.90$22.60880
070$13.60$14.5024.53%$490.00—$27.70$28.5060
2119$10.10$11.0024.34%$500.00—$34.30$37.50280
3150$7.40$8.2024.24%$510.00—$41.50$45.2050
1180$5.30$5.9024.07%$520.00—————
250$3.30$5.3024.65%$530.00—————
149$2.30$3.5024.27%$540.00—————
083$1.60$2.5524.46%$550.00—————

Forward $476.37. The 25-delta put carries +2.64 volatility points over the 25-delta call.

2027-02-19(102 days)ATM 26.69%±67.52skew +3.83
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$133.40$140.00—$340.00—————
01$114.40$121.10—$360.00—————
02$105.10$111.30—$370.00—————
03$96.00$101.70—$380.00—————
03$87.90$93.10—$390.0033.74%$3.80$5.7031
06$78.00$84.30—$400.00—————
021$69.40$75.60—$410.0031.68%$6.10$8.00200
014$61.10$67.60—$420.0029.68%$7.30$8.50250
06$53.30$59.30—$430.0029.19%$9.00$11.00400
03$46.00$51.00—$440.00—————
013$40.30$45.20—$450.0027.68%$14.50$15.50112
026$33.00$37.80—$460.0029.28%$18.20$22.6080
017$27.00$32.10—$470.0026.96%$22.10$23.20920
0280$24.50$27.4026.74%$480.00—$26.80$28.1020
0618$19.90$23.1026.58%$490.00—$32.10$37.2020
0118$15.00$19.5026.05%$500.00—$38.60$43.1010
1131$13.10$14.2025.60%$510.00—————
015$10.30$11.4025.46%$520.00—————
10$8.10$9.0025.36%$530.00—————
02$6.10$7.3025.32%$540.00—————

Forward $478.48. The 25-delta put carries +3.83 volatility points over the 25-delta call.

2027-03-19(130 days)ATM 27.64%±78.79skew +2.94
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$106.30$113.10—$370.00—————
02$97.60$104.10—$380.0031.98%$3.70$5.30160
010$88.50$94.80—$390.0032.01%$4.90$7.10300
19$80.00$85.60—$400.0030.36%$6.20$7.30591
042$75.40$78.10—$410.0030.24%$7.80$9.60800
011$65.40$69.60—$420.0029.29%$9.60$11.10370
035$57.20$61.70—$430.0028.76%$12.00$13.30653
04$50.30$54.80—$440.0028.61%$14.70$16.70331
039$43.10$47.70—$450.0027.82%$17.60$19.50251
0106$36.10$41.80—$460.0027.86%$21.60$23.80377
2388$34.20$36.30—$470.0027.48%$25.80$28.00461
335$28.90$31.0027.73%$480.00—$30.60$34.00360
0106$24.40$26.3027.41%$490.00—$35.90$39.80120
1116$20.40$22.1027.10%$500.00—$41.70$45.1010
153$16.10$18.2026.35%$510.00—————
0110$13.60$15.2026.45%$520.00—————
12$10.50$12.3025.87%$530.00—————
013$8.70$9.9025.81%$540.00—————
223$5.70$8.1024.95%$550.00—$78.80$84.5010
08$4.70$7.6025.84%$560.00—————
012$2.90$4.8025.64%$580.00—————

Forward $477.61. The 25-delta put carries +2.94 volatility points over the 25-delta call.

2027-06-17(220 days)ATM 27.83%±103.80skew +3.72
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$113.70$120.60—$370.0032.66%$6.70$9.60560
02$105.40$112.40—$380.0032.08%$8.00$11.20940
03$97.30$103.90—$390.0031.85%$9.70$13.4030
011$89.40$95.90—$400.0031.24%$11.50$15.30230
016$81.80$87.60—$410.0030.70%$13.50$17.60150
041$74.40$80.30—$420.0030.19%$15.70$20.30560
016$67.00$73.30—$430.0029.96%$18.70$23.40100
028$61.00$66.50—$440.0029.58%$21.70$26.80290
025$54.00$60.20—$450.0029.34%$25.20$30.70410
018$48.10$54.30—$460.0028.88%$29.00$34.4040
02$43.00$49.10—$470.0028.42%$33.30$38.30130
026$38.00$44.00—$480.0028.18%$38.00$43.10130
035$33.50$39.2027.93%$490.00—————
013$28.20$34.8027.29%$500.00—$48.60$54.7010
02$25.30$30.8027.38%$510.00—————
059$21.80$27.2027.16%$520.00—$61.00$67.00150
01$18.30$23.9026.80%$530.00—$67.80$73.3010
07$15.90$20.8026.69%$540.00—————
068$13.70$18.3026.67%$550.00—————
05$11.40$16.0026.47%$560.00—————
01$8.10$12.1026.30%$580.00—————

Forward $480.46. The 25-delta put carries +3.72 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.