Options Skew Analytics

TLT options analytics

TLT · ETF

Data as of 23 September 2026 (end of day)

TLT options are pricing a 30-day at-the-money volatility of 12.4%, a move of about ±3.6% over the next month. That is higher than 11% of the 221 sessions in its trailing year.

Its 25-delta puts carry 0.80 volatility points more than the calls, around the middle of its own range for the past year.

Current readings

30-day ATM implied volatilityⓘ
12.40%

Prices a move of about ±3.6% over 30 days, or ±0.8% on a typical day.

Higher than 11% of the past year.

25-delta risk reversalⓘ
+0.80

Puts carry 0.80 volatility points more than calls the same distance from the money.

Higher than 71% of the past year.

25-delta butterflyⓘ
+0.08

The wings carry 0.08 volatility points more than at-the-money.

Term structure slopeⓘ
1.023

90-day volatility is 2% above 30-day.

Higher than 33% of the past year.

Where 30-day implied volatility sits

Against 221 prior sessions (one-year window)

12.4% — 11th percentile
10.1%23.9%
IV percentile, 1 year
11%
IV rank, 1 year
16%
IV percentile, 2 years
11%
IV rank, 2 years
16%

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
$80.46
30-day implied forward
$80.40
60-day ATM IV
12.56%
90-day ATM IV
12.68%
180-day ATM IV
12.27%
Expirations used
25
Total open interest
8,287,725
Put / call open interest
0.63

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

5%10%15%20%25%30%5 Sep25 Nov19 Feb8 May23 Sep
Show the underlying numbers (most recent 120)
Session30-day ATM IV25-delta RRTerm slopeClose
2026-09-2312.40%+0.801.023$80.46
2026-09-2210.87%+0.451.084$81.75
2026-09-2111.02%+0.731.088$81.80
2026-09-1811.26%+0.711.087$81.25
2026-09-1710.59%+0.491.096$81.78
2026-09-1611.91%+1.051.080$80.88
2026-09-1513.09%+0.681.037$80.71
2026-09-1412.55%+0.661.032$80.93
2026-09-1111.07%+1.051.110$80.87
2026-09-1012.79%+0.921.034$80.78
2026-09-0911.18%+0.811.066$81.73
2026-09-0811.19%+0.431.048$82.20
2026-09-0410.31%+0.651.099$82.21
2026-09-0311.11%+0.631.050$82.07
2026-09-0211.32%+0.641.037$81.95
2026-09-0111.29%+0.651.054$81.87
2026-08-3110.56%+0.301.091$82.52
2026-08-2810.14%+0.281.108$82.88
2026-08-2710.78%+0.021.080$83.13
2026-08-2610.95%+0.261.067$83.30
2025-06-3013.86%+0.131.052$88.25
2025-06-2713.58%+0.141.076$87.39
2025-06-2613.91%-0.131.071$87.95
2025-06-2514.09%-0.321.069$87.51
2025-06-2414.33%-0.321.049$87.40
2025-06-2314.56%-0.231.054$86.77
2025-06-2014.55%-0.221.070$86.49
2025-06-1815.12%+0.211.042$86.65
2025-06-1715.51%+0.241.026$86.50
2025-06-1615.11%+0.741.040$85.46
2025-06-1315.50%+0.441.035$86.33
2025-06-1214.81%+0.391.038$87.17
2025-06-1114.67%+0.491.050$86.14
2025-06-1015.12%+1.011.052$85.88
2025-06-0915.20%+0.911.058$85.44
2025-06-0615.29%+1.211.054$85.35
2025-06-0515.96%+1.031.027$86.45
2025-06-0416.26%+1.001.007$86.39
2025-06-0316.15%+1.371.026$85.01
2025-06-0216.11%+1.311.043$85.16
2025-05-3015.12%+1.221.094$86.28
2025-05-2915.39%+1.121.075$86.15
2025-05-2816.13%+1.761.049$85.36
2025-05-2715.83%+1.751.059$85.73
2025-05-2317.14%+1.961.032$84.55
2025-05-2216.99%+1.741.029$84.41
2025-05-2118.19%+1.770.989$83.97
2025-05-2016.47%+1.431.035$85.43
2025-05-1915.95%+1.721.052$86.05
2025-05-1615.52%+1.301.061$86.30
2025-05-1516.28%+1.291.028$86.07
2025-05-1416.10%+1.201.052$85.32
2025-05-1314.96%+0.661.056$85.89
2025-05-1215.32%+0.671.039$86.24
2025-05-0915.35%+0.751.053$87.05
2025-05-0816.10%+0.841.031$86.92
2025-05-0716.05%+0.811.026$87.90
2025-05-0616.68%+0.661.012$87.53
2025-05-0516.89%+0.820.998$87.24
2025-05-0216.50%+0.491.021$87.73
2025-05-0117.20%+0.921.002$88.69
2025-04-3016.98%+0.621.022$89.47
2025-04-2917.49%+0.500.999$90.20
2025-04-2817.03%+0.621.005$89.45
2025-04-2516.62%+0.721.002$88.89
2025-04-2417.65%+0.991.008$88.24
2025-04-2319.14%+2.040.974$87.32
2025-04-2219.74%+2.770.977$86.48
2025-04-2121.47%+3.940.936$86.00
2025-04-1717.92%+1.821.022$87.53
2025-04-1618.47%+0.841.015$88.31
2025-04-1518.75%+0.790.997$87.82
2025-04-1421.40%+1.250.944$87.51
2025-04-1123.82%+2.560.889$86.89
2025-04-1023.91%+2.880.875$86.42
2025-04-0920.91%+0.090.905$88.87
2025-04-0823.07%+1.360.893$88.35
2025-04-0720.09%+0.520.899$90.05
2025-04-0418.01%-2.190.936$92.85
2025-04-0316.13%-1.380.957$91.85
2025-04-0215.25%-0.670.958$91.43
2025-04-0115.23%-1.120.981$91.49
2025-03-3114.58%-1.311.017$91.03
2025-03-2814.02%-1.471.047$90.14
2025-03-2713.52%-1.191.062$88.91
2025-03-2613.61%-1.311.051$89.17
2025-03-2513.05%-0.961.071$89.76
2025-03-2413.40%-0.981.065$89.77
2025-03-2113.17%-1.081.066$90.70
2025-03-2013.69%-1.051.049$91.24
2025-03-1913.59%-0.871.057$91.18
2025-03-1814.02%-0.761.059$90.71
2025-03-1714.69%-0.551.034$90.62
2025-03-1414.71%-0.601.042$90.17
2025-03-1315.37%-0.731.028$90.65
2025-03-1215.02%-1.071.036$89.86
2025-03-1115.95%-1.131.002$90.40
2025-03-1015.95%-0.810.991$91.05
2025-03-0714.64%-0.701.021$90.11
2025-03-0615.36%-0.920.988$90.40
2025-03-0514.82%-0.401.006$90.70
2025-03-0415.37%-0.990.973$91.43
2025-03-0315.56%-1.120.989$92.57
2025-02-2814.46%-1.181.029$92.43
2025-02-2714.91%-1.391.002$91.31
2025-02-2615.08%-1.461.018$91.96
2025-02-2514.70%-1.171.013$91.42
2025-02-2413.51%-0.621.039$89.87
2025-02-2113.31%-0.651.062$89.61
2025-02-2013.05%-0.561.090$88.54
2025-02-1913.20%-0.241.069$88.21
2025-02-1813.38%-0.781.075$88.10
2025-02-1413.33%-0.381.065$89.15
2025-02-1313.54%-0.241.047$88.68
2025-02-1213.75%-0.201.045$87.23
2025-02-1113.92%-0.501.051$88.43
2025-02-1014.11%-0.111.045$89.00
2025-02-0714.38%-0.031.026$89.27
2025-02-0614.88%-0.050.983$89.85
2025-02-0515.15%+0.050.975$89.89

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

-4.0-2.00.02.04.06.05 Sep25 Nov19 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) · 5d (2026-09-28) · 7d (2026-09-30)

10%12%14%16%18%20%2026-09-25 (2d) — 5Δ C — IV 17.79%2026-09-25 (2d) — 10Δ C — IV 16.85%2026-09-25 (2d) — 15Δ C — IV 16.16%2026-09-25 (2d) — 20Δ C — IV 15.94%2026-09-25 (2d) — 25Δ C — IV 15.80%2026-09-25 (2d) — 30Δ C — IV 15.71%2026-09-25 (2d) — 35Δ C — IV 15.62%2026-09-25 (2d) — 40Δ C — IV 15.54%2026-09-25 (2d) — 45Δ C — IV 15.48%2026-09-25 (2d) — ATM — IV 15.46%2026-09-25 (2d) — 45Δ P — IV 15.55%2026-09-25 (2d) — 40Δ P — IV 15.76%2026-09-25 (2d) — 35Δ P — IV 16.00%2026-09-25 (2d) — 30Δ P — IV 16.15%2026-09-25 (2d) — 25Δ P — IV 16.18%2026-09-25 (2d) — 20Δ P — IV 16.20%2026-09-25 (2d) — 15Δ P — IV 16.24%2026-09-25 (2d) — 10Δ P — IV 16.90%2026-09-25 (2d) — 5Δ P — IV 18.07%2d2026-09-28 (5d) — 5Δ C — IV 12.71%2026-09-28 (5d) — 10Δ C — IV 12.29%2026-09-28 (5d) — 15Δ C — IV 11.99%2026-09-28 (5d) — 20Δ C — IV 11.83%2026-09-28 (5d) — 25Δ C — IV 11.75%2026-09-28 (5d) — 30Δ C — IV 11.70%2026-09-28 (5d) — 35Δ C — IV 11.69%2026-09-28 (5d) — 40Δ C — IV 11.71%2026-09-28 (5d) — 45Δ C — IV 11.74%2026-09-28 (5d) — ATM — IV 11.79%2026-09-28 (5d) — 45Δ P — IV 11.85%2026-09-28 (5d) — 40Δ P — IV 11.93%2026-09-28 (5d) — 35Δ P — IV 12.01%2026-09-28 (5d) — 30Δ P — IV 12.15%2026-09-28 (5d) — 25Δ P — IV 12.46%2026-09-28 (5d) — 20Δ P — IV 12.78%2026-09-28 (5d) — 15Δ P — IV 12.94%2026-09-28 (5d) — 10Δ P — IV 13.18%2026-09-28 (5d) — 5Δ P — IV 14.79%5d2026-09-30 (7d) — 5Δ C — IV 13.75%2026-09-30 (7d) — 10Δ C — IV 12.73%2026-09-30 (7d) — 15Δ C — IV 12.46%2026-09-30 (7d) — 20Δ C — IV 12.43%2026-09-30 (7d) — 25Δ C — IV 12.40%2026-09-30 (7d) — 30Δ C — IV 12.39%2026-09-30 (7d) — 35Δ C — IV 12.38%2026-09-30 (7d) — 40Δ C — IV 12.39%2026-09-30 (7d) — 45Δ C — IV 12.42%2026-09-30 (7d) — ATM — IV 12.47%2026-09-30 (7d) — 45Δ P — IV 12.53%2026-09-30 (7d) — 40Δ P — IV 12.61%2026-09-30 (7d) — 35Δ P — IV 12.69%2026-09-30 (7d) — 30Δ P — IV 12.78%2026-09-30 (7d) — 25Δ P — IV 12.89%2026-09-30 (7d) — 20Δ P — IV 13.06%2026-09-30 (7d) — 15Δ P — IV 13.31%2026-09-30 (7d) — 10Δ P — IV 13.99%2026-09-30 (7d) — 5Δ P — IV 15.25%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
Delta2d5d7d
5Δ call17.79%12.71%13.75%
10Δ call16.85%12.29%12.73%
15Δ call16.16%11.99%12.46%
20Δ call15.94%11.83%12.43%
25Δ call15.80%11.75%12.40%
30Δ call15.71%11.70%12.39%
35Δ call15.62%11.69%12.38%
40Δ call15.54%11.71%12.39%
45Δ call15.48%11.74%12.42%
ATM15.46%11.79%12.47%
45Δ put15.55%11.85%12.53%
40Δ put15.76%11.93%12.61%
35Δ put16.00%12.01%12.69%
30Δ put16.15%12.15%12.78%
25Δ put16.18%12.46%12.89%
20Δ put16.20%12.78%13.06%
15Δ put16.24%12.94%13.31%
10Δ put16.90%13.18%13.99%
5Δ put18.07%14.79%15.25%

Wing readings by expiration

ExpirationDaysForwardATM IV25Δ put25Δ callRRButterflyQuotes
2026-09-252$80.4915.46%16.18%15.80%+0.38+0.5311
2026-09-285$80.5011.79%12.46%11.75%+0.71+0.3113
2026-09-307$80.5212.47%12.89%12.40%+0.49+0.189
2026-10-029$80.3013.78%14.02%12.97%+1.05-0.2822
2026-10-0512$80.2912.55%12.80%11.94%+0.86-0.1819
2026-10-0714$80.3212.52%13.13%11.94%+1.19+0.0112
2026-10-0916$80.3112.74%13.20%12.30%+0.90+0.0129
2026-10-1623$80.3412.60%13.08%12.35%+0.72+0.1234
2026-10-2330$80.4012.40%12.89%12.09%+0.80+0.0834
2026-10-3037$80.4712.47%13.01%12.11%+0.90+0.0924
2026-11-2058$80.3712.62%13.30%12.25%+1.05+0.1539
2026-11-3068$80.4212.37%13.00%12.03%+0.97+0.1531
2026-12-1886$80.2212.80%13.52%12.35%+1.17+0.1441
2026-12-3199$80.2112.46%13.15%12.05%+1.09+0.1444
2027-01-15114$80.2712.41%12.99%12.02%+0.97+0.1060
2027-02-19149$80.3612.32%12.98%12.04%+0.94+0.1948
2027-03-19177$80.3812.27%13.03%11.98%+1.04+0.2340
2027-03-31189$80.4512.25%12.97%11.96%+1.01+0.2138
2027-04-16205$80.4112.27%13.01%11.95%+1.06+0.2143
2027-05-21240$80.4612.28%13.02%11.99%+1.02+0.2248
2027-06-17267$80.4912.27%13.05%12.05%+1.00+0.2819
2027-06-30280$80.5112.31%13.02%12.07%+0.95+0.2338
2027-07-16296$80.4712.25%13.12%11.96%+1.15+0.2930
2027-08-20331$80.5112.24%13.13%12.03%+1.10+0.3429
2027-09-17359$80.5612.35%13.15%12.11%+1.04+0.2829

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

25 listed expirations produced a usable reading

11%12%13%14%15%16%2026-09-25 — 2 days — at-the-money IV 15.46%2026-09-28 — 5 days — at-the-money IV 11.79%2026-09-30 — 7 days — at-the-money IV 12.47%2026-10-02 — 9 days — at-the-money IV 13.78%2026-10-05 — 12 days — at-the-money IV 12.55%2026-10-07 — 14 days — at-the-money IV 12.52%2026-10-09 — 16 days — at-the-money IV 12.74%2026-10-16 — 23 days — at-the-money IV 12.60%2026-10-23 — 30 days — at-the-money IV 12.40%2026-10-30 — 37 days — at-the-money IV 12.47%2026-11-20 — 58 days — at-the-money IV 12.62%2026-11-30 — 68 days — at-the-money IV 12.37%2026-12-18 — 86 days — at-the-money IV 12.80%2026-12-31 — 99 days — at-the-money IV 12.46%2027-01-15 — 114 days — at-the-money IV 12.41%2027-02-19 — 149 days — at-the-money IV 12.32%2027-03-19 — 177 days — at-the-money IV 12.27%2027-03-31 — 189 days — at-the-money IV 12.25%2027-04-16 — 205 days — at-the-money IV 12.27%2027-05-21 — 240 days — at-the-money IV 12.28%2027-06-17 — 267 days — at-the-money IV 12.27%2027-06-30 — 280 days — at-the-money IV 12.31%2027-07-16 — 296 days — at-the-money IV 12.25%2027-08-20 — 331 days — at-the-money IV 12.24%2027-09-17 — 359 days — at-the-money IV 12.35%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
2026-09-252 days$80.4915.46%$80.5011
2026-09-285 days$80.5011.79%$80.5113
2026-09-307 days$80.5212.47%$80.539
2026-10-029 days$80.3013.78%$80.3222
2026-10-0512 days$80.2912.55%$80.3219
2026-10-0714 days$80.3212.52%$80.3412
2026-10-0916 days$80.3112.74%$80.3429
2026-10-1623 days$80.3412.60%$80.3834
2026-10-2330 days$80.4012.40%$80.4634
2026-10-3037 days$80.4712.47%$80.5424
2026-11-2058 days$80.3712.62%$80.4739
2026-11-3068 days$80.4212.37%$80.5431
2026-12-1886 days$80.2212.80%$80.3841
2026-12-3199 days$80.2112.46%$80.3844
2027-01-15114 days$80.2712.41%$80.4760
2027-02-19149 days$80.3612.32%$80.6148
2027-03-19177 days$80.3812.27%$80.6740
2027-03-31189 days$80.4512.25%$80.7638
2027-04-16205 days$80.4112.27%$80.7543
2027-05-21240 days$80.4612.28%$80.8648
2027-06-17267 days$80.4912.27%$80.9319
2027-06-30280 days$80.5112.31%$80.9838
2027-07-16296 days$80.4712.25%$80.9630
2027-08-20331 days$80.5112.24%$81.0529
2027-09-17359 days$80.5612.35%$81.1629

Constant maturities

Interpolated between the bracketing listed expirations, in total variance

30 days
12.40%
60 days
12.56%
90 days
12.68%
180 days
12.27%

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

0.800.901.001.101.201.305 Sep25 Nov19 Feb8 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.