Options Skew Analytics

DXCM option chain

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

Data as of 22 September 2026 (end of day)

2026-09-25(3 days)ATM 39.18%±3.19skew -0.27
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
02$28.30$30.50—$60.00—————
01$18.20$20.70—$70.00—————
02$17.20$19.70—$71.00—————
22$16.20$18.70—$72.00—————
11$15.30$17.70—$73.00—————
01$14.30$16.70—$74.00—————
02$13.20$15.90—$75.00—————
10$7.30$9.80—$81.00—————
12$6.30$9.30—$82.00—————
010$6.10$8.40—$83.00—————
08$5.10$7.40—$84.00—————
064$4.10$6.30—$85.00—————
06$3.60$5.00—$86.00—————
069$2.70$4.40—$87.0043.22%$0.35$0.45441
31233$2.15$3.10—$88.0040.28%$0.50$0.65172
5159$1.65$2.30—$89.0039.60%$0.80$1.0012321
5345$1.10$1.3039.17%$90.00—$1.25$1.4560
5315$0.70$0.9039.59%$91.00—————
4138$0.45$0.6040.55%$92.00—————
3285$0.25$0.4041.02%$93.00—————
—————$95.00—$4.30$6.2010

Forward $89.85. The 25-delta put carries -0.27 volatility points over the 25-delta call.

2026-10-02(10 days)ATM 36.45%±5.43skew +1.14
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
04$8.80$11.30—$80.00—————
01$7.80$11.00—$81.00—————
02$6.50$8.30—$83.00—————
01$5.50$7.50—$84.0040.25%$0.35$0.5524
113$5.20$6.30—$85.0039.47%$0.50$0.705110
12$4.00$5.60—$86.0038.35%$0.65$0.9050
—————$87.0037.82%$0.90$1.15720
27$3.00$3.90—$88.0036.68%$1.15$1.4501
414$2.25$3.70—$89.0036.21%$1.55$1.80162
324$1.95$2.35—$90.00—$2.00$2.3090
07$1.55$1.9036.66%$91.00—$2.30$2.95110
042$1.20$1.5036.77%$92.00—$2.80$4.6050
14$0.90$1.2037.06%$93.00—$3.30$4.50170
12$0.65$0.9537.21%$94.00—————
042$0.45$0.7537.34%$95.00—————
—————$96.00—$5.40$7.9040

Forward $90.00. The 25-delta put carries +1.14 volatility points over the 25-delta call.

2026-10-09(17 days)ATM 36.17%±7.02skew +1.49
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
03$11.60$14.70—$77.00—————
09$6.00$9.60—$83.00—————
03$5.20$7.60—$84.0037.83%$0.65$0.9540
08$4.30$7.00—$85.0038.50%$0.85$1.3050
01$4.10$6.60—$86.0036.80%$1.05$1.4510
07$3.30$5.20—$87.0036.79%$1.35$1.8020
01$3.30$5.20—$88.0036.38%$1.65$2.2010
20$3.00$4.40—$89.0034.62%$2.05$2.4009
9627$2.50$3.0036.06%$90.00—$2.55$3.1020
221$2.05$2.6036.40%$91.00—$3.00$3.4030
17$1.65$2.2036.36%$92.00—$3.40$5.5010
06$1.35$1.7535.93%$93.00—————
02$1.05$1.5536.58%$94.00—————
10609$0.85$1.3037.01%$95.00—————
016$0.60$1.0035.92%$96.00—————

Forward $89.92. The 25-delta put carries +1.49 volatility points over the 25-delta call.

2026-10-16(24 days)ATM 35.72%±8.25skew +0.46
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
03$23.40$27.00—$65.00—————
04$18.40$21.40—$70.00—————
14$13.60$16.00—$75.00—————
032$10.20$11.40—$80.0039.21%$0.40$0.601155
—————$83.0038.47%$0.80$1.1521
3111$6.00$6.90—$85.0036.64%$1.15$1.551,2494
—————$86.0035.93%$1.40$1.8021
—————$87.0035.37%$1.70$2.1010
—————$88.0034.89%$2.05$2.4501
01$3.00$4.30—$89.00—————
18293$3.10$3.50—$90.0035.67%$3.10$3.4012726
44$2.60$3.1035.76%$91.00—————
02$2.10$2.6535.06%$92.00—————
28518$1.30$1.6535.89%$95.00—$5.60$7.70250
06$1.05$1.4536.18%$96.00—————
12$0.85$1.2036.01%$97.00—————
01$0.70$1.1036.91%$98.00—————
—————$100.00—$9.70$11.9010
01$0.40$0.5536.54%$101.00—————

Forward $90.05. The 25-delta put carries +0.46 volatility points over the 25-delta call.

2026-11-20(59 days)ATM 43.06%±15.62skew +1.75
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$19.30$22.00—$70.0048.14%$0.60$0.752112
—————$75.0046.27%$1.15$1.40582
—————$80.0044.73%$2.05$2.50380
02$7.50$9.70—$85.0044.57%$3.50$4.40120
10304$6.00$6.70—$90.0043.39%$5.60$6.6090
48$3.90$4.5042.60%$95.00—————
213$2.60$3.0043.18%$100.00—————
1912$1.60$1.9042.98%$105.00—————
1859$1.00$1.2543.64%$110.00—————
0275$0.65$0.8044.40%$115.00—————
1104$0.40$0.5545.31%$120.00—————

Forward $90.25. The 25-delta put carries +1.75 volatility points over the 25-delta call.

2026-12-18(87 days)ATM 40.81%±18.04skew +0.52
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
03$58.50$62.10—$30.00—————
015$53.60$57.10—$35.00—————
0228$48.60$52.20—$40.00—————
018$43.70$47.30—$45.00—————
043$38.80$42.10—$50.00—————
034$33.90$37.20—$55.00—————
099$29.30$31.70—$60.00—————
0781$24.60$26.80—$65.0045.49%$0.40$0.607361
0343$20.50$22.40—$70.0044.67%$0.90$1.103572
0273$15.60$18.00—$75.0043.74%$1.55$2.051370
0301$11.80$14.00—$80.0041.00%$2.65$2.852082
4826$9.70$10.60—$85.0039.93%$4.10$4.603203
0700$7.00$7.90—$90.0041.26%$6.30$7.501690
71,094$5.00$5.4040.24%$95.00—$9.00$9.90890
1372,163$3.50$3.7040.09%$100.00—$12.20$14.201320
0619$2.25$2.7540.47%$105.00—$16.00$18.2010
4303$1.50$1.8540.51%$110.00—————
14174$1.00$1.2540.79%$115.00—————
0306$0.65$0.9541.74%$120.00—————
0135$0.45$0.7042.68%$125.00—————

Forward $90.56. The 25-delta put carries +0.52 volatility points over the 25-delta call.

2027-01-15(115 days)ATM 40.60%±20.80skew +2.74
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
030$58.70$62.20—$30.00—————
0153$53.70$57.30—$35.00—————
010$48.80$52.10—$40.00—————
09$43.90$47.40—$45.00—————
055$39.10$42.40—$50.00—————
030$34.30$37.00—$55.00—————
079$29.60$32.10—$60.00—————
121,314$25.10$27.30—$65.00—————
01,027$21.40$23.20—$70.0045.01%$1.30$1.702,809225
122,386$17.80$19.10—$75.0043.92%$2.20$2.651,7130
0969$13.10$15.30—$80.0042.81%$3.40$4.005280
31,046$10.30$11.80—$85.0041.81%$5.00$5.807620
1936$8.50$9.30—$90.0041.33%$7.30$8.002530
1821$6.10$7.1040.48%$95.00—$10.00$10.901131
12,135$4.50$5.3040.45%$100.00—$13.30$14.40500
02,203$3.10$4.0040.26%$105.00—$16.90$19.005000
0724$2.05$3.0040.07%$110.00—————
01,591$1.45$2.2040.34%$115.00—————
0292$1.00$1.6540.72%$120.00—————

Forward $91.27. The 25-delta put carries +2.74 volatility points over the 25-delta call.

2027-03-19(178 days)ATM 42.84%±27.37skew +1.83
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
05$54.00$57.70—$35.00—————
05$49.20$52.70—$40.00—————
04$44.50$47.70—$45.00—————
07$39.80$42.50—$50.00—————
06$35.20$37.90—$55.00—————
013$30.80$33.50—$60.0048.57%$0.95$1.551590
031$26.50$29.00—$65.0046.23%$1.50$2.107780
180$23.30$24.90—$70.0045.46%$2.40$3.101750
038$18.90$21.20—$75.0044.16%$3.40$4.401290
039$15.40$18.00—$80.0043.36%$4.90$6.00810
0256$12.70$14.90—$85.0042.79%$6.90$7.90670
035$10.10$12.20—$90.0042.18%$9.30$10.102975
0580$8.50$9.9042.75%$95.00—$12.00$13.00570
278$7.10$8.1043.38%$100.00—$15.10$16.8020
074$5.20$6.6042.40%$105.00—————
188$4.00$5.2041.94%$110.00—$22.30$24.2030
073$3.00$4.1041.53%$115.00—————
029$2.30$3.3041.63%$120.00—————
032$1.75$2.7041.88%$125.00—————
09$1.05$1.5041.29%$135.00—————

Forward $91.48. The 25-delta put carries +1.83 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.