Options Skew Analytics

XLF options analytics

XLF · ETF

Data as of 23 September 2026 (end of day)

XLF options are pricing a 30-day at-the-money volatility of 16.5%, a move of about ±4.7% over the next month. That is higher than 45% of the 193 sessions in its trailing year.

Its 25-delta puts carry 1.12 volatility points more than the calls, closer together than on 98% of the past year.

Current readings

30-day ATM implied volatilityⓘ
16.47%

Prices a move of about ±4.7% over 30 days, or ±1.0% on a typical day.

Higher than 45% of the past year.

25-delta risk reversalⓘ
+1.12

Puts carry 1.12 volatility points more than calls the same distance from the money.

Higher than 2% of the past year.

25-delta butterflyⓘ
+0.60

The wings carry 0.60 volatility points more than at-the-money.

Term structure slopeⓘ
1.021

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

Higher than 37% of the past year.

Where 30-day implied volatility sits

Against 193 prior sessions (one-year window)

16.5% — 45th percentile
12.1%28.7%
IV percentile, 1 year
45%
IV rank, 1 year
26%
IV percentile, 2 years
47%
IV rank, 2 years
25%

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
$54.54
30-day implied forward
$54.82
60-day ATM IV
17.12%
90-day ATM IV
16.81%
180-day ATM IV
17.27%
Expirations used
22
Total open interest
4,135,996
Put / call open interest
1.25

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 514 sessions

10%15%20%25%30%35%26 Aug21 Apr23 Oct31 Mar23 Sep
Show the underlying numbers (most recent 120)
Session30-day ATM IV25-delta RRTerm slopeClose
2026-09-2316.47%+1.121.021$54.54
2026-09-2215.48%+1.801.035$54.80
2026-09-2115.06%+1.841.047$55.90
2026-09-1814.68%+2.351.069$55.86
2026-09-1715.45%+2.311.085$55.88
2026-09-1617.03%+3.251.020$55.93
2026-09-1515.17%+2.701.085$56.85
2026-09-14———$57.03
2026-09-11———$57.25
2026-09-1016.40%+3.301.087$56.87
2026-09-0914.98%+2.791.142$57.06
2026-09-0816.12%+0.471.024$57.30
2026-09-04———$58.10
2026-09-0315.52%+2.691.049$58.56
2026-09-0214.86%+0.811.041$57.66
2026-09-0115.57%+2.131.016$57.20
2026-08-3114.69%+0.861.039$57.71
2026-08-2813.79%+1.351.146$58.10
2026-08-2714.77%+1.881.043$57.88
2026-08-21———$57.48
2026-08-2014.52%+1.701.103$56.95
2026-08-1912.72%+1.091.245$57.48
2026-08-18———$57.84
2026-08-17———$57.58
2026-08-1412.07%+1.731.319$58.16
2026-08-13———$58.26
2026-08-12———$57.92
2026-08-11———$57.80
2026-08-10———$57.81
2026-08-07———$57.60
2026-08-06———$57.81
2026-08-05———$58.00
2026-08-04———$57.88
2026-08-03———$57.38
2026-07-31———$56.94
2026-07-3014.14%+2.251.133$57.00
2026-07-29———$56.68
2026-07-2815.99%+3.851.000$57.60
2026-07-2715.18%+2.811.088$56.88
2026-07-2415.25%+3.671.101$56.31
2026-07-2316.43%+2.631.003$55.83
2026-07-22———$56.05
2026-07-2115.88%+2.611.046$56.11
2026-07-20———$56.04
2026-07-17———$56.26
2026-07-16———$56.75
2026-07-15———$56.56
2026-07-14———$56.18
2026-07-1318.27%+3.670.971$56.07
2026-07-10———$55.71
2026-07-09———$55.54
2026-07-08———$54.97
2026-07-07———$56.05
2026-07-0615.68%+1.331.045$56.14
2026-07-0216.06%+1.870.965$55.62
2026-07-0115.57%+3.391.043$54.78
2026-06-3015.18%+2.780.987$53.61
2026-06-2914.64%+3.491.099$53.72
2026-06-26———$53.57
2026-06-2515.78%+2.491.027$53.45
2026-06-24———$53.72
2026-06-2315.50%+3.371.058$53.88
2026-06-2215.70%+2.411.071$53.70
2026-06-1815.79%+2.771.000$53.57
2026-06-1716.09%+2.051.052$54.05
2026-06-1615.73%+2.271.064$54.35
2026-06-1516.09%+2.431.051$53.56
2026-06-1215.81%+2.211.104$53.34
2026-06-1117.27%+3.231.047$52.62
2026-06-1017.63%+3.601.041$52.23
2026-06-0916.96%+2.261.052$52.46
2026-06-0817.31%+3.341.060$51.97
2026-06-0518.26%+4.741.006$52.30
2026-06-0416.51%+2.571.083$52.19
2026-06-03———$50.87
2026-06-0217.32%+2.061.036$51.46
2026-06-0117.30%+2.581.059$51.43
2026-05-2917.23%+1.290.982$51.58
2026-05-2816.84%+1.971.005$51.27
2026-05-2717.03%+4.091.034$51.42
2026-05-2616.65%+3.421.072$51.85
2026-05-2216.39%+2.921.058$51.94
2026-05-2116.75%+2.071.042$51.73
2026-05-2017.36%+2.631.036$51.66
2026-05-1916.98%+3.011.044$51.10
2026-05-1816.93%+2.911.055$51.74
2026-05-1516.45%+2.911.090$51.10
2026-05-1416.63%+1.691.059$51.29
2026-05-1317.79%+1.701.025$50.99
2026-05-1216.88%+3.791.068$51.58
2026-05-1116.68%+3.191.079$51.18
2026-05-0817.25%+2.331.009$51.24
2026-05-0715.26%+4.221.152$51.55
2026-05-0616.70%+1.631.081$51.84
2026-05-0517.07%+1.751.067$51.59
2026-05-0416.95%+4.831.061$51.58
2026-05-0116.91%+3.821.034$51.92
2026-04-3016.99%+2.861.027$52.13
2026-04-2917.41%+2.031.032$51.92
2026-04-2817.22%+2.121.055$51.85
2026-04-2718.00%+4.391.030$51.81
2026-04-2417.58%+3.331.063$51.42
2026-04-23———$51.80
2026-04-2217.83%+4.441.003$52.21
2026-04-21———$52.30
2026-04-2017.51%+4.110.997$52.63
2026-04-1717.78%+3.870.991$52.43
2026-04-1617.71%+3.931.002$52.03
2026-04-1518.26%+3.260.967$52.17
2026-04-1417.47%+4.370.998$51.78
2026-04-13———$51.66
2026-04-1020.85%+4.800.985$50.77
2026-04-09———$51.33
2026-04-08———$51.20
2026-04-0723.76%+6.440.917$49.88
2026-04-0622.53%+5.840.937$49.88
2026-04-0222.96%+5.530.953$49.53
2026-04-0123.17%+5.610.942$49.44
2026-03-3124.29%+4.500.949$49.37
2026-03-3026.66%+6.360.925$48.36

The chart covers every session in the archive, 514 in total. The table lists the most recent 120.

25-delta risk reversal

Last 514 sessions

-5.00.05.010.015.026 Aug21 Apr23 Oct31 Mar23 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) · 6d (2026-09-29)

10%15%20%25%30%2026-09-25 (2d) — 10Δ C — IV 18.12%2026-09-25 (2d) — 15Δ C — IV 17.95%2026-09-25 (2d) — 20Δ C — IV 17.95%2026-09-25 (2d) — 25Δ C — IV 17.94%2026-09-25 (2d) — 30Δ C — IV 17.94%2026-09-25 (2d) — 35Δ C — IV 17.92%2026-09-25 (2d) — 40Δ C — IV 17.82%2026-09-25 (2d) — 45Δ C — IV 17.68%2026-09-25 (2d) — ATM — IV 17.55%2026-09-25 (2d) — 45Δ P — IV 17.45%2026-09-25 (2d) — 40Δ P — IV 17.42%2026-09-25 (2d) — 35Δ P — IV 17.48%2026-09-25 (2d) — 30Δ P — IV 17.61%2026-09-25 (2d) — 25Δ P — IV 17.84%2026-09-25 (2d) — 20Δ P — IV 18.16%2026-09-25 (2d) — 15Δ P — IV 18.77%2026-09-25 (2d) — 10Δ P — IV 20.67%2026-09-25 (2d) — 5Δ P — IV 24.50%2d2026-09-28 (5d) — 10Δ C — IV 15.55%2026-09-28 (5d) — 15Δ C — IV 14.97%2026-09-28 (5d) — 20Δ C — IV 14.64%2026-09-28 (5d) — 25Δ C — IV 14.35%2026-09-28 (5d) — 30Δ C — IV 14.14%2026-09-28 (5d) — 35Δ C — IV 14.04%2026-09-28 (5d) — 40Δ C — IV 14.04%2026-09-28 (5d) — 45Δ C — IV 14.06%2026-09-28 (5d) — ATM — IV 14.09%2026-09-28 (5d) — 45Δ P — IV 14.13%2026-09-28 (5d) — 40Δ P — IV 14.19%2026-09-28 (5d) — 35Δ P — IV 14.34%2026-09-28 (5d) — 30Δ P — IV 14.59%2026-09-28 (5d) — 25Δ P — IV 14.93%2026-09-28 (5d) — 20Δ P — IV 15.40%2026-09-28 (5d) — 15Δ P — IV 16.21%2026-09-28 (5d) — 10Δ P — IV 17.45%2026-09-28 (5d) — 5Δ P — IV 21.94%5d2026-09-29 (6d) — 10Δ C — IV 15.68%2026-09-29 (6d) — 15Δ C — IV 15.28%2026-09-29 (6d) — 20Δ C — IV 15.18%2026-09-29 (6d) — 25Δ C — IV 15.08%2026-09-29 (6d) — 30Δ C — IV 14.97%2026-09-29 (6d) — 35Δ C — IV 14.90%2026-09-29 (6d) — 40Δ C — IV 14.89%2026-09-29 (6d) — 45Δ C — IV 14.90%2026-09-29 (6d) — ATM — IV 14.91%2026-09-29 (6d) — 45Δ P — IV 14.93%2026-09-29 (6d) — 40Δ P — IV 14.95%2026-09-29 (6d) — 35Δ P — IV 15.03%2026-09-29 (6d) — 30Δ P — IV 15.15%2026-09-29 (6d) — 25Δ P — IV 15.34%2026-09-29 (6d) — 20Δ P — IV 15.87%2026-09-29 (6d) — 15Δ P — IV 16.86%2026-09-29 (6d) — 10Δ P — IV 18.62%2026-09-29 (6d) — 5Δ P — IV 21.30%6d10Δ 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
Delta2d5d6d
10Δ call18.12%15.55%15.68%
15Δ call17.95%14.97%15.28%
20Δ call17.95%14.64%15.18%
25Δ call17.94%14.35%15.08%
30Δ call17.94%14.14%14.97%
35Δ call17.92%14.04%14.90%
40Δ call17.82%14.04%14.89%
45Δ call17.68%14.06%14.90%
ATM17.55%14.09%14.91%
45Δ put17.45%14.13%14.93%
40Δ put17.42%14.19%14.95%
35Δ put17.48%14.34%15.03%
30Δ put17.61%14.59%15.15%
25Δ put17.84%14.93%15.34%
20Δ put18.16%15.40%15.87%
15Δ put18.77%16.21%16.86%
10Δ put20.67%17.45%18.62%
5Δ put24.50%21.94%21.30%

Wing readings by expiration

ExpirationDaysForwardATM IV25Δ put25Δ callRRButterflyQuotes
2026-09-252$54.6617.55%17.84%17.94%-0.11+0.349
2026-09-285$54.6814.09%14.93%14.35%+0.58+0.5511
2026-09-296$54.6814.91%15.34%15.08%+0.26+0.3011
2026-09-307$54.6714.80%15.44%14.95%+0.48+0.407
2026-10-018$54.7015.61%16.53%16.18%+0.35+0.759
2026-10-029$54.6916.07%17.25%15.84%+1.41+0.4718
2026-10-0512$54.7315.21%15.80%15.31%+0.49+0.3511
2026-10-0613$54.7115.20%16.44%15.80%+0.64+0.939
2026-10-0714$54.7415.79%16.59%15.90%+0.69+0.469
2026-10-0916$54.7516.50%17.81%15.96%+1.84+0.3824
2026-10-1623$54.7617.06%18.30%16.89%+1.41+0.5332
2026-10-2330$54.8216.47%17.63%16.51%+1.12+0.6030
2026-10-3037$54.8916.91%18.14%16.51%+1.63+0.4134
2026-11-2058$54.9717.14%18.61%16.60%+2.01+0.4626
2026-12-1886$55.1916.91%18.47%16.38%+2.09+0.5232
2026-12-3199$55.1616.63%18.21%16.10%+2.11+0.5318
2027-01-15114$55.1916.95%18.58%16.22%+2.36+0.4638
2027-03-19177$55.6317.24%19.34%16.09%+3.26+0.4738
2027-03-31189$55.5317.34%18.95%16.51%+2.44+0.3926
2027-06-17267$56.1017.76%20.05%16.81%+3.24+0.6732
2027-06-30280$56.2117.90%20.00%16.52%+3.48+0.3527
2027-09-17359$56.5818.45%20.63%17.02%+3.61+0.3720

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

22 listed expirations produced a usable reading

12%14%16%18%20%2026-09-25 — 2 days — at-the-money IV 17.55%2026-09-28 — 5 days — at-the-money IV 14.09%2026-09-29 — 6 days — at-the-money IV 14.91%2026-09-30 — 7 days — at-the-money IV 14.80%2026-10-01 — 8 days — at-the-money IV 15.61%2026-10-02 — 9 days — at-the-money IV 16.07%2026-10-05 — 12 days — at-the-money IV 15.21%2026-10-06 — 13 days — at-the-money IV 15.20%2026-10-07 — 14 days — at-the-money IV 15.79%2026-10-09 — 16 days — at-the-money IV 16.50%2026-10-16 — 23 days — at-the-money IV 17.06%2026-10-23 — 30 days — at-the-money IV 16.47%2026-10-30 — 37 days — at-the-money IV 16.91%2026-11-20 — 58 days — at-the-money IV 17.14%2026-12-18 — 86 days — at-the-money IV 16.91%2026-12-31 — 99 days — at-the-money IV 16.63%2027-01-15 — 114 days — at-the-money IV 16.95%2027-03-19 — 177 days — at-the-money IV 17.24%2027-03-31 — 189 days — at-the-money IV 17.34%2027-06-17 — 267 days — at-the-money IV 17.76%2027-06-30 — 280 days — at-the-money IV 17.90%2027-09-17 — 359 days — at-the-money IV 18.45%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$54.6617.55%$54.669
2026-09-285 days$54.6814.09%$54.6811
2026-09-296 days$54.6814.91%$54.6911
2026-09-307 days$54.6714.80%$54.687
2026-10-018 days$54.7015.61%$54.719
2026-10-029 days$54.6916.07%$54.7018
2026-10-0512 days$54.7315.21%$54.7511
2026-10-0613 days$54.7115.20%$54.749
2026-10-0714 days$54.7415.79%$54.779
2026-10-0916 days$54.7516.50%$54.7824
2026-10-1623 days$54.7617.06%$54.8132
2026-10-2330 days$54.8216.47%$54.8930
2026-10-3037 days$54.8916.91%$54.9734
2026-11-2058 days$54.9717.14%$55.1026
2026-12-1886 days$55.1916.91%$55.3732
2026-12-3199 days$55.1616.63%$55.3718
2027-01-15114 days$55.1916.95%$55.4438
2027-03-19177 days$55.6317.24%$56.0338
2027-03-31189 days$55.5317.34%$55.9626
2027-06-17267 days$56.1017.76%$56.7532
2027-06-30280 days$56.2117.90%$56.9027
2027-09-17359 days$56.5818.45%$57.5420

Constant maturities

Interpolated between the bracketing listed expirations, in total variance

30 days
16.47%
60 days
17.12%
90 days
16.81%
180 days
17.27%

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 514 sessions

0.600.801.001.201.4026 Aug23 Apr27 Oct1 Apr23 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.