Options Skew Analytics

STX 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 107.89%±57.21skew +10.22
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
83$34.00$39.90—$482.50112.99%$11.70$14.803513
9240$32.10$37.70—$485.00114.15%$12.70$16.10152
01$29.60$38.10—$487.50114.54%$13.50$17.40127
36333$27.50$34.70—$490.00114.97%$14.40$18.70924
181$26.40$33.10—$492.50114.19%$15.20$19.70920
3466$26.40$31.80—$495.00110.79%$16.50$19.202051
45$25.70$30.30—$497.50114.02%$17.30$22.00210
94677$23.20$28.10—$500.00113.40%$19.10$22.3021385
408$23.00$27.50—$502.50115.20%$19.90$24.70165
85449$21.70$25.50—$505.00108.25%$20.60$23.6027329
724$18.90$24.00103.74%$507.50—$22.00$24.902713
81331$19.40$23.00108.02%$510.00—$23.20$26.705957
177$17.20$21.30104.05%$512.50—$23.80$29.60142
2623$17.10$20.30106.50%$515.00—$25.20$28.90140
729$15.80$21.20110.44%$517.50—$26.40$31.00392
2033$13.80$18.90104.86%$520.00—$29.40$33.5046177
2323$13.30$16.70102.87%$522.50—$29.40$36.201110
4870$13.10$16.20105.54%$525.00—$30.70$35.30102
2615$11.60$15.70104.84%$527.50—$32.10$39.9050
311327$11.40$13.30102.41%$530.00—$33.80$38.2016624
6925$9.70$13.60102.78%$532.50—$35.40$42.5070

Forward $506.50. The 25-delta put carries +10.22 volatility points over the 25-delta call.

2026-11-20(11 days)ATM 93.12%±81.92
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
17$53.50$61.00—$465.00100.88%$16.10$17.90366
40—$51.40$59.00—$467.50101.31%$16.40$19.60—0
1040$49.60$57.00—$470.0099.67%$17.60$19.20117160
0—$48.10$56.20—$472.50102.17%$18.70$21.50—5
6521$46.40$56.50—$475.0098.48%$18.90$20.90530
0—$45.70$52.90—$477.50100.59%$19.70$23.40—39
1376$44.40$52.00—$480.0099.32%$21.20$23.1040260
0—$43.20$52.50—$482.5099.66%$21.50$25.10—6
450$40.70$49.70—$485.0098.85%$22.60$25.606114
7442$38.20$45.20—$490.0097.01%$24.20$27.2023013
259$37.00$42.30—$495.0098.10%$26.10$30.705338
6496$35.10$38.10—$500.0098.97%$29.50$32.8044139
814$32.80$35.50—$505.0095.18%$30.70$34.10310
2113$28.80$33.6093.36%$510.00—$34.20$37.108834
206$27.20$30.6093.07%$515.00—$35.70$42.20386
6267$25.20$28.4093.02%$520.00—$39.20$42.5022812
162$22.40$25.7090.76%$525.00—$41.90$47.20500
2856$20.90$24.4092.05%$530.00—$44.40$51.402835
275$19.90$22.6093.05%$535.00—$46.00$53.5052
87307$18.10$19.9091.22%$540.00—$50.40$56.5030017
3110$16.50$18.9091.90%$545.00—$53.00$60.50471

Forward $506.75. Not enough surviving quotes on both wings to measure the skew here.

2026-11-27(18 days)ATM 88.08%±98.97
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
0—$58.40$68.60—$465.0090.49%$19.50$23.90—0
0—$56.70$67.20—$467.5089.11%$20.50$23.70—0
410$55.10$65.50—$470.0089.57%$21.90$24.605530
0—$53.10$60.90—$472.5089.58%$22.30$26.20—2
0—$51.90$59.70—$475.0090.14%$23.20$27.80—1
11—$50.60$57.00—$477.5087.74%$24.20$26.90—0
1114$49.10$56.80—$480.0089.62%$24.80$30.00507
22—$47.70$55.90—$482.5090.10%$25.90$31.50—22
3—$45.40$54.60—$485.0089.81%$27.40$32.00—2
05$44.50$50.60—$490.0089.98%$29.70$34.50674
211$41.30$47.40—$495.0087.87%$31.90$35.30026
56$39.90$45.00—$500.0087.72%$34.50$37.605831
122$36.10$42.80—$505.0087.34%$36.00$41.0003
33$35.20$38.5086.60%$510.00—$37.90$42.505616
46$32.60$38.1088.10%$515.00—$41.10$46.20026
1237$31.30$34.6087.37%$520.00—$43.50$49.2098
32$27.20$32.5084.85%$525.00—————
49$27.00$29.5085.48%$530.00—$48.90$55.70130
151$25.20$27.3084.99%$535.00—$51.90$56.9002
85$23.30$26.3085.55%$540.00—$53.90$62.40130
97$21.40$24.2084.63%$545.00—————

Forward $505.95. Not enough surviving quotes on both wings to measure the skew here.

2026-12-04(25 days)ATM 85.87%±113.73
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
0—$69.80$79.70—$455.0088.25%$21.20$25.10—0
02$66.80$76.40—$460.0088.11%$23.50$26.40243
4—$63.50$73.30—$465.0087.89%$24.80$28.80—0
131$60.60$70.20—$470.0088.23%$27.30$30.70162
32—$57.70$65.30—$475.0085.50%$28.30$31.30—0
14727$54.60$62.30—$480.0086.71%$30.60$34.60152
13—$51.60$58.00—$485.0086.01%$32.10$37.00—0
245$49.40$56.30—$490.0087.41%$35.20$40.101080
21$46.70$53.10—$495.0084.53%$37.40$39.90110
28$45.00$50.20—$500.0085.19%$39.50$43.608010
202$43.20$47.40—$505.0085.18%$41.10$47.30510
60$40.60$45.6085.28%$510.00—$43.70$50.101222
147$38.90$43.7085.96%$515.00—————
34$36.80$41.5085.82%$520.00—$49.00$55.4084
103$33.40$38.2083.24%$525.00—$51.70$58.1020
04$33.10$35.7084.21%$530.00—$53.90$58.70240
145$30.40$34.2083.69%$535.00—$57.50$64.0010
45$28.30$32.1083.00%$540.00—$59.70$66.60212
40$27.30$30.6083.82%$545.00—$63.60$69.7060
116$25.60$27.6082.33%$550.00—$66.60$73.50180
61$23.40$26.9082.45%$555.00—————

Forward $506.10. Not enough surviving quotes on both wings to measure the skew here.

2026-12-11(32 days)ATM 81.67%±122.67
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
0—$73.30$84.30—$455.0086.57%$24.20$30.10—4
25$70.90$81.10—$460.0087.42%$27.00$32.1069
1—$67.80$78.00—$465.0086.78%$28.60$33.90—9
10$64.80$75.00—$470.0085.83%$31.20$34.5032
8—$61.60$72.10—$475.0086.76%$33.10$38.00—0
154$59.60$69.30—$480.0086.17%$35.30$39.70610
0—$55.70$64.90—$485.0085.02%$36.70$41.70—1
02$55.40$61.40—$490.0084.11%$39.40$42.8032
017$50.90$59.70—$495.0087.11%$40.20$50.50200
410$50.70$55.90—$500.0084.81%$43.80$49.405612
20$46.90$56.30—$505.0083.18%$45.00$51.60010
10$45.90$51.2083.54%$510.00—$48.00$54.50127
—————$515.00—$51.10$57.30200
215$40.30$46.1081.70%$520.00—$53.80$60.7050
01$35.80$42.6081.62%$530.00—$58.80$66.80150
20$35.10$42.3083.91%$535.00—————
257$31.90$39.7082.04%$540.00—$64.90$72.5070
01$30.90$36.6081.49%$545.00—$66.20$75.6010
35$29.30$33.9080.63%$550.00—$68.30$78.60162
32$27.50$32.3080.42%$555.00—$72.10$82.20380
156$25.70$30.0079.47%$560.00—$75.50$85.70111

Forward $507.29. Not enough surviving quotes on both wings to measure the skew here.

2026-12-18(39 days)ATM 81.39%±134.71skew +7.48
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
020$108.70$119.20—$410.0086.09%$15.90$17.401993
045$101.10$111.80—$420.0085.57%$18.50$20.0016016
265$94.00$104.70—$430.0084.44%$20.90$22.701,12716
235$88.90$97.90—$440.0085.03%$23.90$27.1010623
1065$80.80$91.40—$450.0083.23%$27.50$28.90374244
824$76.30$85.00—$460.0083.28%$30.70$33.708212
533$71.40$78.20—$470.0083.31%$34.40$38.6017520
1038$63.20$70.90—$480.0082.29%$38.70$42.2030511
523$58.70$65.50—$490.0081.38%$42.80$46.7016912
28208$56.10$58.20—$500.0080.66%$48.90$50.0035745
6103$48.50$54.8081.25%$510.00—$52.50$58.109522
6261$44.80$50.5081.56%$520.00—$57.30$62.8012971
381,617$42.50$44.4081.14%$530.00—$63.20$69.509410
3250$37.30$42.2081.07%$540.00—$69.30$73.8028427
170119$34.80$37.4080.67%$550.00—$73.90$81.302044
12842$31.20$33.1079.40%$560.00—$81.60$87.805231
3342$26.50$31.0078.59%$570.00—$88.30$93.401252
6966$25.30$27.4079.01%$580.00—$94.70$103.40244163
133$22.60$24.9078.75%$590.00—$100.60$110.701910
64184$19.50$22.2077.59%$600.00—$109.80$118.706274
20131$17.80$19.8077.55%$610.00—$117.90$125.6030410

Forward $506.33. The 25-delta put carries +7.48 volatility points over the 25-delta call.

2026-12-24(45 days)ATM 80.03%±142.94
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
11$77.30$88.10—$460.0082.77%$31.80$37.7030
0—$73.00$85.20—$465.0084.84%$34.40$42.00—0
—————$470.0084.11%$36.70$43.2044
0—$69.30$79.50—$475.0084.14%$35.60$48.90—0
—————$480.0081.81%$39.30$46.80272
0—$63.30$74.10—$485.0083.72%$42.50$51.00—0
11$60.80$70.90—$490.0081.53%$43.90$51.60120
02$58.80$69.00—$495.0080.37%$45.60$53.402112
54$56.70$64.00—$500.0081.22%$49.30$56.10132
40$53.90$63.20—$505.0082.46%$53.00$59.5010
52$51.90$59.4079.60%$510.00—$51.80$62.2030
20$49.10$57.3079.19%$515.00—$54.30$65.0020
—————$520.00—$60.70$67.6061
40$45.10$52.6078.85%$525.00—————
50$43.40$52.2080.14%$530.00—$62.90$73.7020
01$39.60$49.8078.43%$535.00—$67.00$77.30115
13$39.90$46.0078.55%$540.00—————
02$37.50$45.2078.78%$545.00—$72.10$83.2010
71$35.90$44.3079.43%$550.00—$75.30$86.70115
33$32.70$42.7078.36%$555.00—$78.60$89.2003
41$32.90$40.8079.42%$560.00—$82.80$93.2009

Forward $508.64. Not enough surviving quotes on both wings to measure the skew here.

2027-01-15(67 days)ATM 75.14%±163.52skew +5.24
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
050$119.00$126.80—$410.0080.58%$24.10$26.509614
4240$112.70$119.60—$420.0079.79%$27.20$29.101768
228$106.80$112.90—$430.0079.14%$30.40$32.202209
359$98.20$108.30—$440.0078.60%$34.10$35.409714
256$94.20$100.60—$450.0078.56%$37.90$39.7028112
585$85.90$96.40—$460.0078.19%$41.70$44.00501
326$80.80$88.70—$470.0077.96%$45.30$49.201036
5353$75.50$83.10—$480.0077.19%$49.20$53.7013610
6350$71.80$77.70—$490.0076.87%$55.20$57.301446
115295$68.20$71.00—$500.0076.63%$60.00$62.7074422
6255$61.00$68.0076.23%$510.00—$64.30$68.806459
97186$56.80$63.2075.83%$520.00—$69.10$74.4023211
90209$52.60$58.4075.16%$530.00—$74.20$80.201242
15923$50.30$53.2075.11%$540.00—$80.50$86.201410
54408$45.10$50.6074.64%$550.00—$86.90$92.505616
1868$42.80$46.7074.86%$560.00—$92.50$99.2070520
82241$40.50$42.2074.49%$570.00—$98.40$105.803471
1862$37.50$39.3074.43%$580.00—$105.30$112.9037029
6103$34.20$37.2074.44%$590.00—$111.90$119.902863
137156$31.80$33.8074.00%$600.00—$118.60$127.605446
33163$28.90$31.8073.90%$610.00—$126.00$135.701931

Forward $507.93. The 25-delta put carries +5.24 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.