Options Skew Analytics

VALE option chain

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

Data as of 28 September 2026 (end of day)

2026-10-09(11 days)ATM 39.22%±0.93skew +0.10
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
05$3.95$4.25—$9.50—————
01$3.50$3.75—$10.00—————
—————$11.5056.23%$0.01$0.0321
—————$12.5043.29%$0.04$0.08136
—————$13.0040.02%$0.12$0.15562223
194763$0.42$0.46—$13.5039.28%$0.29$0.321,050460
510251$0.20$0.2439.17%$14.00—$0.57$0.635,5771
381,108$0.09$0.1139.92%$14.50—$0.95$1.015403
38112$0.03$0.0641.63%$15.00—$1.34$2.001562
6126$0.01$0.0241.15%$15.50—————
—————$25.00—$11.25$13.3002

Forward $13.64. The 25-delta put carries +0.10 volatility points over the 25-delta call.

2026-10-16(18 days)ATM 36.64%±1.11skew -0.38
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
045$10.50$14.25—$1.00—————
03$9.50$13.50—$2.00—————
01$9.50$11.25—$4.00—————
01$7.10$9.55—$6.00—————
01$5.10$6.95—$8.00—————
01$4.50$4.80—$9.00—————
01$2.57$2.74—$11.0050.76%$0.01$0.0270
—————$11.5049.23%$0.02$0.0526
0108$1.57$1.76—$12.0041.63%$0.03$0.061213
40$1.16$1.29—$12.5039.24%$0.08$0.11496
215$0.79$0.88—$13.0037.51%$0.18$0.214,3553,521
199116$0.49$0.53—$13.5036.62%$0.36$0.39348282
4572,440$0.27$0.3136.74%$14.00—$0.63$0.674,07743
2464$0.14$0.1837.89%$14.50—$1.00$1.052020
5243,984$0.07$0.0938.33%$15.00—$1.40$1.503,5476
0163$0.02$0.0436.89%$15.50—————
215,862$0.01$0.0340.51%$16.00—$2.24$2.659880
—————$16.50—$2.73$3.5010
—————$17.00—$3.30$3.7021
—————$21.00—$7.30$7.7002

Forward $13.64. The 25-delta put carries -0.38 volatility points over the 25-delta call.

2026-10-23(25 days)ATM 35.66%±1.28skew +0.53
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
06$4.25$4.80—$9.00—————
02$4.00$4.40—$9.50—————
01$3.50$3.80—$10.00—————
01$2.29$2.90—$11.00—————
01$2.00$2.28—$11.50—————
—————$12.0039.38%$0.04$0.09400
21$1.18$1.45—$12.5037.89%$0.11$0.15450
01$0.83$0.98—$13.0035.90%$0.22$0.25340216
22277$0.55$0.63—$13.5035.59%$0.41$0.4452157
0195$0.33$0.4035.75%$14.00—$0.68$0.722,3270
48235$0.19$0.2235.37%$14.50—$0.96$1.30850
1428$0.10$0.1436.61%$15.00—$1.39$1.68220
662$0.05$0.0937.93%$15.50—$1.77$2.4910
—————$16.00—$2.30$2.7910
—————$16.50—$2.75$3.3010
—————$18.00—$4.25$5.7010

Forward $13.67. The 25-delta put carries +0.53 volatility points over the 25-delta call.

2026-10-30(32 days)ATM 39.41%±1.60skew +1.80
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
014$4.25$4.95—$9.00—————
01$3.75$4.30—$9.50—————
01$3.25$3.85—$10.00—————
01$2.80$3.30—$10.50—————
02$2.59$2.96—$11.00—————
01$1.87$2.33—$11.50—————
01$1.55$1.89—$12.00—————
01$1.28$1.49—$12.5041.79%$0.20$0.24481
0201$0.98$1.03—$13.0040.18%$0.32$0.387614
33212$0.70$0.74—$13.5039.33%$0.42$0.67641
63139$0.45$0.5439.55%$14.00—$0.79$0.8724927
12344$0.29$0.3739.90%$14.50—————
3569$0.20$0.2239.99%$15.00—$1.45$1.89120
2743$0.11$0.1640.70%$15.50—$1.88$2.3420
3239$0.07$0.1041.32%$16.00—$2.29$2.7610

Forward $13.68. The 25-delta put carries +1.80 volatility points over the 25-delta call.

2026-11-20(53 days)ATM 36.83%±1.92skew +1.03
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$9.55$13.55—$2.00—————
04$4.55$4.80—$9.0055.33%$0.01$0.0310
—————$10.0047.56%$0.02$0.052130
01$2.65$2.84—$11.0041.89%$0.06$0.093560
376$1.81$1.94—$12.0038.04%$0.17$0.196738
3312$1.10$1.19—$13.0037.39%$0.44$0.473,14067
1841,275$0.62$0.6436.75%$14.00—$0.90$0.957,46213
279,990$0.29$0.3236.36%$15.00—$1.60$1.644,95412
77,359$0.13$0.1637.21%$16.00—$2.21$2.606,5200
347,265$0.06$0.0838.53%$17.00—$3.30$3.951510
486,671$0.03$0.0541.04%$18.00—————
289$0.01$0.0342.19%$19.00—————

Forward $13.70. The 25-delta put carries +1.03 volatility points over the 25-delta call.

2026-12-18(81 days)ATM 35.69%±2.30skew +2.38
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
051$6.60$9.95—$5.00—————
0149$5.55$5.80—$8.0055.48%$0.01$0.0352,3800
01,165$3.65$3.85—$10.0043.42%$0.05$0.0828,46760
023$2.71$2.94—$11.0039.90%$0.12$0.1616610
06,669$1.90$2.07—$12.0037.48%$0.28$0.3241,631333
101,356$1.23$1.34—$13.0036.39%$0.59$0.6367,65297
10321,823$0.73$0.7935.59%$14.00—$1.05$1.1310,603414
64416,150$0.39$0.4434.91%$15.00—$1.57$1.9219,2850
829,658$0.20$0.2435.10%$16.00—$2.41$2.785,2430
11221,466$0.10$0.1335.62%$17.00—————
1255,683$0.05$0.0836.90%$18.00—$4.25$4.703390
16,200$0.02$0.0436.70%$19.00—$4.80$7.1060
144,788$0.01$0.0440.07%$20.00—————
07,430$0.01$0.0346.59%$22.00—$6.50$10.10200

Forward $13.67. The 25-delta put carries +2.38 volatility points over the 25-delta call.

2027-01-15(109 days)ATM 34.13%±2.55skew +1.88
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
013$8.60$11.95—$3.00—————
0293$6.65$9.90—$5.00—————
0201$6.55$6.80—$7.00—————
21,583$5.60$5.80—$8.0049.51%$0.01$0.0470,4470
—————$9.0045.12%$0.03$0.079710
035,661$3.65$3.90—$10.0040.89%$0.08$0.11104,9482
0111$2.75$2.96—$11.0037.20%$0.16$0.208,1774
025,575$1.96$2.13—$12.0035.33%$0.34$0.3945,8800
5357$1.33$1.43—$13.0034.64%$0.67$0.739,147151
1422,012$0.82$0.8934.10%$14.00—$1.16$1.224,413200
8251,314$0.49$0.5433.98%$15.00—$1.77$1.8955,060110
105,566$0.26$0.3133.45%$16.00—$2.52$2.884,3090
2093,294$0.15$0.1934.37%$17.00—$3.20$4.0511,6330
13,106$0.08$0.1235.12%$18.00—————
01,090$0.04$0.0936.54%$19.00—————
4058,488$0.04$0.0638.88%$20.00—————
081$0.01$0.0539.26%$21.00—————
3043,524$0.01$0.0247.17%$25.00—$10.95$11.9040

Forward $13.66. The 25-delta put carries +1.88 volatility points over the 25-delta call.

2027-03-19(172 days)ATM 35.63%±3.32skew +1.48
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
01$8.50$8.80—$5.00—————
0202$5.60$5.85—$8.00—————
05,810$3.70$4.00—$10.0039.41%$0.17$0.233,2534
—————$11.0037.50%$0.33$0.395970
0209$2.14$2.35—$12.0036.05%$0.57$0.665200
073$1.54$1.68—$13.0035.62%$0.96$1.061,4620
64475$1.05$1.1735.63%$14.00—$1.48$1.6091434
01,963$0.69$0.7934.76%$15.00—$2.15$2.272,3424
4461,479$0.47$0.5134.57%$16.00—$2.31$3.3040
467,736$0.31$0.3534.94%$17.00—$3.50$4.158,0150
0353$0.17$0.2434.54%$18.00—————
0737$0.11$0.1735.20%$19.00—————
43,569$0.07$0.1336.13%$20.00—$5.55$7.903,0020
01,947$0.02$0.0441.72%$25.00—————
0177$0.01$0.0348.96%$30.00—————

Forward $13.56. The 25-delta put carries +1.48 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.