Options Skew Analytics

GDX options analytics

GDX · ETF

Data as of 9 November 2026 (end of day)

GDX options are pricing a 30-day at-the-money volatility of 45.2%, a move of about ±12.9% over the next month. That is higher than 94% of the 252 sessions in its trailing year.

Its 25-delta puts carry 1.80 volatility points more than the calls, around the middle of its own range for the past year.

The term structure is inverted: 90-day volatility is 5% below 30-day, which happens when the market prices something dated into the nearer expirations.

Current readings

30-day ATM implied volatilityⓘ
45.15%

Prices a move of about ±12.9% over 30 days, or ±2.8% on a typical day.

Higher than 94% of the past year.

25-delta risk reversalⓘ
+1.80

Puts carry 1.80 volatility points more than calls the same distance from the money.

Higher than 85% of the past year.

25-delta butterflyⓘ
+0.58

The wings carry 0.58 volatility points more than at-the-money.

Term structure slopeⓘ
0.947

90-day volatility is 5% below 30-day.

Higher than 8% of the past year.

Where 30-day implied volatility sits

Against 252 prior sessions (one-year window)

45.2% — 94th percentile
27.1%52.1%
IV percentile, 1 year
94%
IV rank, 1 year
72%
IV percentile, 2 years
95%
IV rank, 2 years
72%

Rank is the position between the lowest and highest readings in the window, so a single past extreme pins everything after it near one end. Percentile is the share of sessions below the current reading and is unaffected by how far that extreme reached. Both are withheld when the window holds fewer than 180 sessions.

Session detail

Underlying close
$91.46
30-day implied forward
$91.94
60-day ATM IV
43.29%
90-day ATM IV
42.77%
180-day ATM IV
43.12%
Expirations used
15
Total open interest
1,775,566
Put / call open interest
1.10

The forward is derived from put-call parity on the strikes nearest the money, not taken from the underlying close. It is what every moneyness and delta on this page is measured against.

30-day at-the-money implied volatility

Last 322 sessions

20%30%40%50%60%3 Sep30 Dec29 Apr22 Aug9 Nov
Show the underlying numbers (most recent 120)
Session30-day ATM IV25-delta RRTerm slopeClose
2026-11-0945.15%+1.800.947$91.46
2026-11-0643.73%+2.590.981$87.60
2026-11-0545.83%+1.840.945$85.75
2026-11-0441.12%+1.540.986$84.59
2026-11-0342.22%+0.750.978$77.60
2026-11-0241.87%+1.630.980$79.15
2026-10-3044.93%+1.550.932$77.09
2026-10-2940.79%+0.320.990$81.33
2026-10-2841.06%+1.990.971$83.95
2026-10-2739.28%+1.421.004$83.19
2026-10-2640.29%+1.130.982$81.02
2026-10-2342.32%+0.920.975$80.20
2026-10-2242.34%+0.180.976$81.69
2026-10-2140.83%+1.580.985$86.72
2026-10-2040.90%-0.540.999$86.10
2026-10-1940.54%+0.510.995$86.47
2026-10-1641.54%+0.890.992$87.71
2026-10-1540.80%+0.830.985$87.02
2026-10-1442.91%-0.550.953$83.40
2026-10-1339.02%-0.641.022$87.24
2026-10-0939.38%+0.861.025$89.28
2026-10-0840.59%-0.611.000$86.72
2026-10-0740.88%-1.240.999$85.46
2026-10-0639.11%-0.101.034$88.22
2026-10-0540.36%+0.311.010$87.42
2026-10-0240.38%+0.561.020$87.78
2026-10-0140.58%-0.791.019$86.74
2026-09-3040.87%-1.071.021$87.80
2026-09-2941.38%-0.361.016$89.07
2026-09-2842.17%-0.981.008$87.89
2026-09-2540.75%-1.101.024$92.87
2026-09-2441.62%-1.021.010$92.35
2026-09-2341.28%-1.491.024$93.56
2026-09-2242.10%-0.721.025$97.83
2026-09-2141.27%-0.271.038$94.43
2026-09-1841.85%-0.851.037$95.48
2026-09-1742.78%-0.741.031$95.92
2026-09-1645.15%-0.030.997$92.80
2026-09-1544.30%-0.591.006$94.13
2026-09-1444.18%-0.371.001$94.14
2026-09-1143.77%-0.741.018$97.10
2026-09-1045.69%-0.841.014$96.03
2026-09-0944.56%-0.931.035$99.47
2026-09-0846.15%-1.950.998$98.41
2026-09-0443.28%-0.861.053$99.26
2026-09-0344.12%+0.221.031$101.49
2026-09-0244.75%-0.561.028$97.63
2026-09-0145.55%-3.351.004$94.67
2026-08-3143.00%-0.351.046$98.51
2026-08-2845.24%-1.391.035$99.65
2026-08-2746.18%-1.341.022$103.69
2026-08-2646.80%-2.281.039$102.42
2026-08-2548.59%-1.711.018$105.52
2026-08-2451.27%-1.770.968$103.54
2026-08-2149.61%-1.670.985$102.83
2025-09-2937.66%-0.350.998$75.72
2025-09-2636.59%-0.291.004$74.68
2025-09-2537.15%-0.540.999$73.13
2025-09-2436.45%-0.201.024$72.32
2025-09-2337.93%-0.140.985$74.23
2025-09-2238.77%-2.660.960$74.33
2025-09-1933.97%-1.511.024$72.36
2025-09-1832.92%+0.241.035$68.79
2025-09-1735.10%-0.560.975$68.66
2025-09-1636.20%-0.290.986$69.02
2025-09-1535.15%-0.201.008$70.48
2025-09-1233.34%-0.861.045$69.75
2025-09-1133.92%+0.441.037$69.76
2025-09-1033.83%+0.111.024$68.50
2025-09-0934.28%+0.221.015$66.85
2025-09-0834.05%-0.591.019$67.24
2025-09-0534.40%-0.451.008$66.34
2025-09-0433.15%-0.161.022$64.57
2025-09-0336.55%+0.620.987$65.20
2025-09-0235.84%-0.711.018$64.80
2025-08-2931.06%-1.401.066$63.17
2025-08-2830.01%-1.791.071$61.33
2025-08-2730.95%-1.291.038$61.48
2025-08-2632.20%-1.171.012$61.60
2025-08-2531.29%-0.161.022$60.26
2025-08-2230.59%-0.601.050$60.18
2025-08-2131.14%+0.020.994$59.29
2025-08-2030.34%-1.391.043$58.32
2025-08-1930.31%-0.791.031$56.60
2025-08-1830.39%-1.241.046$58.10
2025-08-1530.05%-1.861.068$58.28
2025-08-1431.04%-0.701.031$57.70
2025-08-1330.98%-1.161.029$58.07
2025-08-1231.14%-1.661.024$58.21
2025-08-1131.70%-1.231.015$57.69
2025-08-0831.73%-1.171.031$58.06
2025-08-0732.53%-0.681.035$57.94
2025-08-0632.67%-1.361.020$57.39
2025-08-0533.02%-3.021.015$56.46
2025-08-0432.40%-0.541.017$54.94
2025-08-0130.59%-0.701.034$52.45
2025-07-3129.51%-1.491.037$51.64
2025-07-3031.38%-0.361.009$51.78
2025-07-2931.36%-1.271.022$53.25
2025-07-2830.89%-1.371.031$52.59
2025-07-2531.38%-1.571.018$53.96
2025-07-2432.77%-1.951.002$53.33
2025-07-2332.51%-0.891.005$53.84
2025-07-2234.12%-2.590.984$54.48
2025-07-2132.76%-1.121.004$53.02
2025-07-1830.02%-0.681.049$51.13
2025-07-1731.97%-1.421.001$51.24
2025-07-1633.01%-0.930.979$51.82
2025-07-1532.19%-0.431.004$51.62
2025-07-1431.97%-1.321.015$52.45
2025-07-1132.65%-0.841.026$52.42
2025-07-1031.30%-0.871.029$51.90
2025-07-0931.87%-0.411.029$51.50
2025-07-0832.71%+0.151.028$50.79
2025-07-0732.30%-1.071.024$53.17
2025-07-0330.83%-0.741.055$52.91
2025-07-0231.39%-0.291.033$52.66
2025-07-0131.22%-0.271.038$52.04
2025-06-3030.29%+0.511.047$52.06
2025-06-2729.64%+0.331.048$50.73

The chart covers every session in the archive, 322 in total. The table lists the most recent 120.

25-delta risk reversal

Last 322 sessions

-10.0-5.00.05.010.03 Sep30 Dec29 Apr22 Aug9 Nov

The dashed line marks zero, where the 25-delta put and call carry the same implied volatility.

Skew curve

Implied volatility by delta, front expirations

Implied volatility by delta

2d (2026-11-11) · 4d (2026-11-13) · 7d (2026-11-16)

40%45%50%55%60%65%2026-11-11 (2d) — 5Δ C — IV 53.38%2026-11-11 (2d) — 10Δ C — IV 53.82%2026-11-11 (2d) — 15Δ C — IV 51.16%2026-11-11 (2d) — 20Δ C — IV 50.94%2026-11-11 (2d) — 25Δ C — IV 51.07%2026-11-11 (2d) — 30Δ C — IV 50.96%2026-11-11 (2d) — 35Δ C — IV 50.76%2026-11-11 (2d) — 40Δ C — IV 50.26%2026-11-11 (2d) — 45Δ C — IV 50.00%2026-11-11 (2d) — ATM — IV 50.53%2026-11-11 (2d) — 45Δ P — IV 51.35%2026-11-11 (2d) — 40Δ P — IV 51.73%2026-11-11 (2d) — 35Δ P — IV 52.00%2026-11-11 (2d) — 30Δ P — IV 52.43%2026-11-11 (2d) — 25Δ P — IV 53.06%2026-11-11 (2d) — 20Δ P — IV 53.68%2026-11-11 (2d) — 15Δ P — IV 54.49%2026-11-11 (2d) — 10Δ P — IV 56.27%2026-11-11 (2d) — 5Δ P — IV 61.39%2d2026-11-13 (4d) — 5Δ C — IV 54.08%2026-11-13 (4d) — 10Δ C — IV 53.89%2026-11-13 (4d) — 15Δ C — IV 52.71%2026-11-13 (4d) — 20Δ C — IV 52.97%2026-11-13 (4d) — 25Δ C — IV 52.81%2026-11-13 (4d) — 30Δ C — IV 51.76%2026-11-13 (4d) — 35Δ C — IV 52.15%2026-11-13 (4d) — 40Δ C — IV 51.80%2026-11-13 (4d) — 45Δ C — IV 50.51%2026-11-13 (4d) — ATM — IV 51.25%2026-11-13 (4d) — 45Δ P — IV 52.21%2026-11-13 (4d) — 40Δ P — IV 52.43%2026-11-13 (4d) — 35Δ P — IV 52.67%2026-11-13 (4d) — 30Δ P — IV 52.70%2026-11-13 (4d) — 25Δ P — IV 53.00%2026-11-13 (4d) — 20Δ P — IV 53.32%2026-11-13 (4d) — 15Δ P — IV 57.17%2026-11-13 (4d) — 10Δ P — IV 56.27%2026-11-13 (4d) — 5Δ P — IV 59.83%4d2026-11-16 (7d) — 20Δ C — IV 44.69%2026-11-16 (7d) — 25Δ C — IV 44.72%2026-11-16 (7d) — 30Δ C — IV 44.79%2026-11-16 (7d) — 35Δ C — IV 44.98%2026-11-16 (7d) — 40Δ C — IV 44.31%2026-11-16 (7d) — 45Δ C — IV 44.42%2026-11-16 (7d) — ATM — IV 44.74%2026-11-16 (7d) — 45Δ P — IV 44.98%2026-11-16 (7d) — 40Δ P — IV 44.95%2026-11-16 (7d) — 35Δ P — IV 45.32%2026-11-16 (7d) — 30Δ P — IV 46.03%2026-11-16 (7d) — 25Δ P — IV 46.36%2026-11-16 (7d) — 20Δ P — IV 47.61%2026-11-16 (7d) — 15Δ P — IV 48.16%7d10Δ C25Δ CATM25Δ P10Δ Pout-of-the-money calls ← delta → out-of-the-money puts

The axis is call delta. Readings to the right of the dashed centre line are taken from the out-of-the-money put at that strike, which is the contract whose quote the volatility was solved from. Points are only plotted where surviving quotes bracket the delta on both sides; nothing is extrapolated past the last traded strike.

Show the underlying numbers
Delta2d4d7d
5Δ call53.38%54.08%—
10Δ call53.82%53.89%—
15Δ call51.16%52.71%—
20Δ call50.94%52.97%44.69%
25Δ call51.07%52.81%44.72%
30Δ call50.96%51.76%44.79%
35Δ call50.76%52.15%44.98%
40Δ call50.26%51.80%44.31%
45Δ call50.00%50.51%44.42%
ATM50.53%51.25%44.74%
45Δ put51.35%52.21%44.98%
40Δ put51.73%52.43%44.95%
35Δ put52.00%52.67%45.32%
30Δ put52.43%52.70%46.03%
25Δ put53.06%53.00%46.36%
20Δ put53.68%53.32%47.61%
15Δ put54.49%57.17%48.16%
10Δ put56.27%56.27%—
5Δ put61.39%59.83%—

Wing readings by expiration

ExpirationDaysForwardATM IV25Δ put25Δ callRRButterflyQuotes
2026-11-112$91.4850.53%53.06%51.07%+1.99+1.5315
2026-11-134$91.5251.25%53.00%52.81%+0.19+1.6631
2026-11-167$91.5544.74%46.36%44.72%+1.64+0.8012
2026-11-189$91.6246.03%47.18%46.94%+0.24+1.0312
2026-11-2011$91.7346.37%49.61%47.63%+1.98+2.2546
2026-11-2314$91.5843.82%46.84%44.66%+2.17+1.9313
2026-11-2718$91.7544.33%45.90%44.46%+1.44+0.8538
2026-12-0425$91.9244.09%45.64%44.27%+1.37+0.8738
2026-12-1132$91.9545.48%46.94%45.01%+1.93+0.4940
2026-12-1839$91.9045.30%45.38%44.90%+0.48-0.1657
2026-12-2445$91.5544.01%45.30%43.84%+1.46+0.5624
2027-01-1567$91.4843.07%44.64%43.74%+0.90+1.1265
2027-03-19130$92.2042.50%43.98%43.14%+0.84+1.0677
2027-06-17220$93.1343.41%43.04%43.39%-0.35-0.1988
2027-09-17312$94.3442.78%42.85%44.21%-1.36+0.7583

Each curve above is one expiration. The vertical position is implied volatility; the horizontal position is the delta of the contract it was read from. For US equities the curve normally slopes upward to the right, meaning out-of-the-money puts carry higher implied volatility than equidistant calls.

The 25-delta risk reversal summarises that slope as a single number: the 25-delta put volatility minus the 25-delta call volatility. The butterfly summarises the curvature: the average of the two wings minus the at-the-money reading.

Term structure

At-the-money implied volatility by expiration

At-the-money implied volatility by expiration

15 listed expirations produced a usable reading

40%42%44%46%48%50%52%2026-11-11 — 2 days — at-the-money IV 50.53%2026-11-13 — 4 days — at-the-money IV 51.25%2026-11-16 — 7 days — at-the-money IV 44.74%2026-11-18 — 9 days — at-the-money IV 46.03%2026-11-20 — 11 days — at-the-money IV 46.37%2026-11-23 — 14 days — at-the-money IV 43.82%2026-11-27 — 18 days — at-the-money IV 44.33%2026-12-04 — 25 days — at-the-money IV 44.09%2026-12-11 — 32 days — at-the-money IV 45.48%2026-12-18 — 39 days — at-the-money IV 45.30%2026-12-24 — 45 days — at-the-money IV 44.01%2027-01-15 — 67 days — at-the-money IV 43.07%2027-03-19 — 130 days — at-the-money IV 42.50%2027-06-17 — 220 days — at-the-money IV 43.41%2027-09-17 — 312 days — at-the-money IV 42.78%7306090180days to expiration

The horizontal axis is the square root of days to expiration, which is the scale volatility lives on. A curve that is flat in variance terms plots as a straight line here rather than bending sharply through the front week.

Show the underlying numbers
ExpirationDaysForwardATM IVATM strikeQuotes used
2026-11-112 days$91.4850.53%$91.5415
2026-11-134 days$91.5251.25%$91.6531
2026-11-167 days$91.5544.74%$91.7312
2026-11-189 days$91.6246.03%$91.8612
2026-11-2011 days$91.7346.37%$92.0246
2026-11-2314 days$91.5843.82%$91.9213
2026-11-2718 days$91.7544.33%$92.2038
2026-12-0425 days$91.9244.09%$92.5438
2026-12-1132 days$91.9545.48%$92.7940
2026-12-1839 days$91.9045.30%$92.9157
2026-12-2445 days$91.5544.01%$92.6524
2027-01-1567 days$91.4843.07%$93.0565
2027-03-19130 days$92.2042.50%$95.2277
2027-06-17220 days$93.1343.41%$98.5788
2027-09-17312 days$94.3442.78%$102.0183

Constant maturities

Interpolated between the bracketing listed expirations, in total variance

30 days
45.15%
60 days
43.29%
90 days
42.77%
180 days
43.12%

Interpolation is linear in total variance, not in volatility. Interpolating volatility directly implies a forward variance that can be negative between two expirations. A tenor beyond the longest listed expiration is reported as unavailable rather than extrapolated.

Term structure slope

Last 322 sessions

0.600.801.001.201.403 Sep30 Dec29 Apr22 Aug9 Nov

The dashed line marks 1.00, where the 90-day and 30-day at-the-money volatilities are equal. Above it the longer tenor carries the higher volatility.

The term structure is the at-the-money implied volatility of each listed expiration, plotted against how far away that expiration is. Its usual shape for a calm underlying slopes gently upward, because a longer horizon admits more uncertainty.

It inverts when the market prices a dated event: an expiration that captures a scheduled announcement carries the variance of that event on top of ordinary trading, so a shorter contract can print a higher volatility than a longer one.