Options Skew Analytics

TNA options analytics

TNA · ETF

Data as of 23 September 2026 (end of day)

Some metrics unavailable for this session

TNA options are pricing a 30-day at-the-money volatility of 51.4%, a move of about ±14.7% over the next month. That is higher than 5% of the 219 sessions in its trailing year.

Its 25-delta puts carry 12.43 volatility points more than the calls, around the middle of its own range for the past year.

Current readings

30-day ATM implied volatilityⓘ
51.43%

Prices a move of about ±14.7% over 30 days, or ±3.2% on a typical day.

Higher than 5% of the past year.

25-delta risk reversalⓘ
+12.43

Puts carry 12.43 volatility points more than calls the same distance from the money.

Higher than 65% of the past year.

25-delta butterflyⓘ
+2.44

The wings carry 2.44 volatility points more than at-the-money.

Term structure slopeⓘ
0.999

90-day and 30-day options carry about the same volatility.

Higher than 61% of the past year.

Where 30-day implied volatility sits

Against 219 prior sessions (one-year window)

51.4% — 5th percentile
47.9%122.3%
IV percentile, 1 year
5%
IV rank, 1 year
5%
IV percentile, 2 years
5%
IV rank, 2 years
5%

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
$60.43
30-day implied forward
$61.10
60-day ATM IV
54.51%
90-day ATM IV
51.38%
180-day ATM IV
—
Expirations used
10
Total open interest
111,707
Put / call open interest
1.18

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 222 sessions

40%60%80%100%120%140%5 Sep25 Nov18 Feb8 May23 Sep
Show the underlying numbers (most recent 120)
Session30-day ATM IV25-delta RRTerm slopeClose
2026-09-2351.43%+12.430.999$60.43
2026-09-2249.14%+6.021.073$63.89
2026-09-2149.33%+7.381.083$62.88
2026-09-1850.93%+10.161.050$61.92
2026-09-1748.35%+14.001.105$62.83
2026-09-1657.05%+13.370.952$61.97
2026-09-1555.39%+15.191.012$62.78
2026-09-1452.60%+13.691.059$64.08
2026-09-1154.36%+11.251.038$64.81
2026-09-1059.86%+17.540.939$64.12
2026-09-0955.75%+9.300.984$66.12
2026-09-0852.72%+7.570.964$68.98
2026-09-0451.64%+6.931.008$69.89
2026-09-0350.24%+11.571.034$69.39
2026-09-0248.70%+13.711.088$68.59
2026-09-0153.01%+10.100.968$66.28
2026-08-3151.55%+8.661.037$68.61
2026-08-2847.86%+10.161.096$69.95
2026-08-2747.95%+6.941.120$72.93
2026-08-2651.95%+9.271.039$72.33
2025-06-3064.19%+8.210.951$33.54
2025-06-2759.50%+11.711.042$33.42
2025-06-2659.18%+10.970.928$33.36
2025-06-2558.19%+7.091.014$31.89
2025-06-2456.65%+14.041.052$32.93
2025-06-2362.54%+14.251.023$31.92
2025-06-2068.66%+16.800.928$30.82
2025-06-1867.77%+19.670.927$31.02
2025-06-1768.83%+23.310.958$30.54
2025-06-1662.97%+13.740.984$31.55
2025-06-1364.03%+16.201.000$30.53
2025-06-1260.16%+8.371.015$32.30
2025-06-1159.62%+16.671.005$32.70
2025-06-1062.46%+6.420.982$33.11
2025-06-0965.75%+4.810.907$32.56
2025-06-0657.97%+7.541.083$31.92
2025-06-0562.04%+8.391.023$30.49
2025-06-0463.26%+13.200.984$30.49
2025-06-0364.90%+9.840.950$30.77
2025-06-0259.42%+16.271.072$29.37
2025-05-3063.86%+15.581.022$29.07
2025-05-2961.36%+18.180.982$29.55
2025-05-2862.76%+12.570.989$29.30
2025-05-2765.68%+10.400.926$30.25
2025-05-2372.05%+18.720.899$28.11
2025-05-2267.08%+11.420.907$28.43
2025-05-2166.88%+13.380.964$28.44
2025-05-2056.66%+11.981.028$31.06
2025-05-1957.54%+7.950.955$31.01
2025-05-1654.17%+8.351.109$31.44
2025-05-1557.43%+7.151.021$30.70
2025-05-1459.79%+8.831.030$30.14
2025-05-1360.62%+3.850.944$30.95
2025-05-1258.81%+15.301.036$30.61
2025-05-0966.90%+13.640.991$27.70
2025-05-0871.20%+5.430.953$27.90
2025-05-0774.33%+14.590.937$26.36
2025-05-0669.67%+17.241.029$26.14
2025-05-0571.57%+15.410.998$27.06
2025-05-0270.64%+9.020.932$27.64
2025-05-0183.70%+7.720.864$25.92
2025-04-3073.18%+18.290.966$25.46
2025-04-2974.85%+18.300.919$25.96
2025-04-2869.84%+17.351.033$25.52
2025-04-2575.89%+18.250.927$25.22
2025-04-24———$25.22
2025-04-2389.13%+15.720.904$23.78
2025-04-2289.21%+20.470.922$22.79
2025-04-2198.20%+23.870.851$21.15
2025-04-1785.86%+23.680.925$22.52
2025-04-1690.97%+29.700.944$22.01
2025-04-1585.08%+26.970.903$22.66
2025-04-1488.66%+28.770.887$22.62
2025-04-11100.99%+35.780.853$21.82
2025-04-10115.09%+36.910.807$20.97
2025-04-0989.52%+33.600.911$24.01
2025-04-08122.26%+38.270.771$19.12
2025-04-07———$20.79
2025-04-04112.73%+34.780.855$21.32
2025-04-0391.36%+20.660.841$24.68
2025-04-0272.08%+12.300.895$30.63
2025-04-0172.48%+14.060.874$29.24
2025-03-3171.07%+15.130.857$29.26
2025-03-2865.78%+10.140.991$29.70
2025-03-2766.56%+7.360.981$31.65
2025-03-2659.10%+12.591.025$32.06
2025-03-2564.28%+8.470.913$33.13
2025-03-2464.31%+13.560.982$33.81
2025-03-2165.80%+8.710.945$31.46
2025-03-2067.29%+9.390.909$32.09
2025-03-1968.85%+15.220.917$32.71
2025-03-1874.58%+12.230.928$31.29
2025-03-1773.63%+6.540.923$32.06
2025-03-1474.06%+19.370.901$30.94
2025-03-1381.43%+13.780.894$28.89
2025-03-1277.39%+15.760.895$30.24
2025-03-1180.77%+22.120.925$30.11
2025-03-1086.24%+25.160.822$30.11
2025-03-0776.19%+16.770.899$32.60
2025-03-0681.49%+16.120.861$32.30
2025-03-0573.35%+12.270.881$33.92
2025-03-0476.80%+15.690.901$32.93
2025-03-0373.13%+13.17—$34.10
2025-02-2862.87%+15.890.933$37.14
2025-02-2768.78%+15.880.877$36.03
2025-02-2668.61%+7.540.919$37.79
2025-02-2564.70%+15.990.994$37.65
2025-02-2465.41%+13.440.914$38.09
2025-02-2159.29%+13.180.995$38.92
2025-02-2054.34%+9.991.090$42.73
2025-02-1951.98%+10.221.054$43.96
2025-02-1853.26%+10.581.001$44.44
2025-02-1452.88%+3.231.010$43.73
2025-02-1349.96%+3.431.149$43.85
2025-02-1249.15%+8.351.114$42.50
2025-02-1154.82%+8.721.037$43.70
2025-02-1052.60%+13.201.098$44.48
2025-02-0762.48%+6.980.841$43.87
2025-02-0658.00%+11.230.899$45.52
2025-02-0561.08%+5.610.929$45.99

The chart covers every session in the archive, 222 in total. The table lists the most recent 120.

25-delta risk reversal

Last 222 sessions

-20.00.020.040.060.05 Sep25 Nov18 Feb8 May23 Sep

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 (2026-09-25) · 9d (2026-10-02) · 16d (2026-10-09)

40%50%60%70%80%90%2026-09-25 (2d) — 5Δ C — IV 64.30%2026-09-25 (2d) — 10Δ C — IV 58.34%2026-09-25 (2d) — 15Δ C — IV 58.53%2026-09-25 (2d) — 20Δ C — IV 57.49%2026-09-25 (2d) — 25Δ C — IV 57.65%2026-09-25 (2d) — 30Δ C — IV 57.65%2026-09-25 (2d) — 35Δ C — IV 57.30%2026-09-25 (2d) — 40Δ C — IV 56.79%2026-09-25 (2d) — 45Δ C — IV 56.59%2026-09-25 (2d) — ATM — IV 56.53%2026-09-25 (2d) — 45Δ P — IV 56.49%2026-09-25 (2d) — 40Δ P — IV 56.49%2026-09-25 (2d) — 35Δ P — IV 57.26%2026-09-25 (2d) — 30Δ P — IV 58.72%2026-09-25 (2d) — 25Δ P — IV 59.82%2026-09-25 (2d) — 20Δ P — IV 60.61%2026-09-25 (2d) — 15Δ P — IV 62.02%2026-09-25 (2d) — 10Δ P — IV 65.45%2026-09-25 (2d) — 5Δ P — IV 72.55%2d2026-10-02 (9d) — 5Δ C — IV 52.02%2026-10-02 (9d) — 10Δ C — IV 50.72%2026-10-02 (9d) — 15Δ C — IV 49.57%2026-10-02 (9d) — 20Δ C — IV 50.34%2026-10-02 (9d) — 25Δ C — IV 49.91%2026-10-02 (9d) — 30Δ C — IV 48.66%2026-10-02 (9d) — 35Δ C — IV 50.69%2026-10-02 (9d) — 40Δ C — IV 51.24%2026-10-02 (9d) — 45Δ C — IV 51.56%2026-10-02 (9d) — ATM — IV 52.13%2026-10-02 (9d) — 45Δ P — IV 54.44%2026-10-02 (9d) — 40Δ P — IV 55.54%2026-10-02 (9d) — 35Δ P — IV 56.15%2026-10-02 (9d) — 30Δ P — IV 57.89%2026-10-02 (9d) — 25Δ P — IV 58.99%2026-10-02 (9d) — 20Δ P — IV 60.71%2026-10-02 (9d) — 15Δ P — IV 63.81%2026-10-02 (9d) — 10Δ P — IV 68.51%2026-10-02 (9d) — 5Δ P — IV 79.19%9d2026-10-09 (16d) — 15Δ C — IV 45.85%2026-10-09 (16d) — 20Δ C — IV 45.23%2026-10-09 (16d) — 25Δ C — IV 46.22%2026-10-09 (16d) — 30Δ C — IV 47.26%2026-10-09 (16d) — 35Δ C — IV 47.23%2026-10-09 (16d) — 40Δ C — IV 48.49%2026-10-09 (16d) — 45Δ C — IV 48.68%2026-10-09 (16d) — ATM — IV 51.72%2026-10-09 (16d) — 45Δ P — IV 53.94%2026-10-09 (16d) — 40Δ P — IV 54.69%2026-10-09 (16d) — 35Δ P — IV 55.61%2026-10-09 (16d) — 30Δ P — IV 57.96%2026-10-09 (16d) — 25Δ P — IV 59.38%2026-10-09 (16d) — 20Δ P — IV 62.31%2026-10-09 (16d) — 15Δ P — IV 65.67%2026-10-09 (16d) — 10Δ P — IV 68.76%16d10Δ 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
Delta2d9d16d
5Δ call64.30%52.02%—
10Δ call58.34%50.72%—
15Δ call58.53%49.57%45.85%
20Δ call57.49%50.34%45.23%
25Δ call57.65%49.91%46.22%
30Δ call57.65%48.66%47.26%
35Δ call57.30%50.69%47.23%
40Δ call56.79%51.24%48.49%
45Δ call56.59%51.56%48.68%
ATM56.53%52.13%51.72%
45Δ put56.49%54.44%53.94%
40Δ put56.49%55.54%54.69%
35Δ put57.26%56.15%55.61%
30Δ put58.72%57.89%57.96%
25Δ put59.82%58.99%59.38%
20Δ put60.61%60.71%62.31%
15Δ put62.02%63.81%65.67%
10Δ put65.45%68.51%68.76%
5Δ put72.55%79.19%—

Wing readings by expiration

ExpirationDaysForwardATM IV25Δ put25Δ callRRButterflyQuotes
2026-09-252$60.5356.53%59.82%57.65%+2.17+2.2126
2026-10-029$60.7052.13%58.99%49.91%+9.08+2.3228
2026-10-0916$61.0251.72%59.38%46.22%+13.15+1.0821
2026-10-1623$61.3847.00%61.91%46.70%+15.21+7.3128
2026-10-2330$61.1051.43%60.09%47.66%+12.43+2.4414
2026-10-3037$61.4350.11%62.94%46.83%+16.11+4.7817
2026-11-2058$60.7554.93%59.00%50.88%+8.12+0.0121
2026-12-1886$62.0350.76%61.20%46.83%+14.37+3.2617
2027-01-15114$61.4254.08%59.13%49.39%+9.73+0.1837
2027-03-19177$62.3154.91%59.47%52.53%+6.94+1.0835

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

10 listed expirations produced a usable reading

46%48%50%52%54%56%58%2026-09-25 — 2 days — at-the-money IV 56.53%2026-10-02 — 9 days — at-the-money IV 52.13%2026-10-09 — 16 days — at-the-money IV 51.72%2026-10-16 — 23 days — at-the-money IV 47.00%2026-10-23 — 30 days — at-the-money IV 51.43%2026-10-30 — 37 days — at-the-money IV 50.11%2026-11-20 — 58 days — at-the-money IV 54.93%2026-12-18 — 86 days — at-the-money IV 50.76%2027-01-15 — 114 days — at-the-money IV 54.08%2027-03-19 — 177 days — at-the-money IV 54.91%7306090days 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
2026-09-252 days$60.5356.53%$60.5926
2026-10-029 days$60.7052.13%$60.9128
2026-10-0916 days$61.0251.72%$61.3821
2026-10-1623 days$61.3847.00%$61.8128
2026-10-2330 days$61.1051.43%$61.7714
2026-10-3037 days$61.4350.11%$62.2117
2026-11-2058 days$60.7554.93%$62.2221
2026-12-1886 days$62.0350.76%$63.9417
2027-01-15114 days$61.4254.08%$64.2937
2027-03-19177 days$62.3154.91%$67.0335

Constant maturities

Interpolated between the bracketing listed expirations, in total variance

30 days
51.43%
60 days
54.51%
90 days
51.38%
180 days
—

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 222 sessions

0.600.801.001.201.405 Sep27 Nov19 Feb12 May23 Sep

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.