Options Skew Analytics

FDS options analytics

FDS · Stock

Data as of 22 September 2026 (end of day)

Some metrics unavailable for this session

FDS options are pricing a 30-day at-the-money volatility of 52.9%, a move of about ±15.2% over the next month. Its history here is 226 sessions, short of the 180 a percentile needs, so this reading is not yet ranked against its own past.

Its 25-delta puts carry 1.22 volatility points more than the calls.

The term structure is inverted: 90-day volatility is 8% below 30-day, which happens when the market prices something dated into the nearer expirations.

Its next earnings report is 2026-09-30, before the open.

Across its last 5 reports the options market priced an average move of ±5.5% and FDS moved 8.9% on average, staying inside the priced band 4 times out of 5.

Current readings

30-day ATM implied volatilityⓘ
52.86%

Prices a move of about ±15.2% over 30 days, or ±3.3% on a typical day.

25-delta risk reversalⓘ
+1.22

Puts carry 1.22 volatility points more than calls the same distance from the money.

25-delta butterflyⓘ
+1.19

The wings carry 1.19 volatility points more than at-the-money.

Term structure slopeⓘ
0.917

90-day volatility is 8% below 30-day.

Where 30-day implied volatility sits

Against 5 prior sessions (one-year window)

Not enough history in this window to place the current reading.

IV percentile, 1 year
—
IV rank, 1 year
—
IV percentile, 2 years
—
IV rank, 2 years
—

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
$276.42
30-day implied forward
$279.77
60-day ATM IV
49.21%
90-day ATM IV
48.46%
180-day ATM IV
—
Expirations used
4
Total open interest
7,765
Put / call open interest
3.04

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 226 sessions

51%52%53%54%2026-09-16 — 30-day ATM IV 53%2026-09-17 — 30-day ATM IV 52%2026-09-18 — 30-day ATM IV 51%2026-09-21 — 30-day ATM IV 53%2026-09-22 — 30-day ATM IV 53%16 Sep17 Sep18 Sep21 Sep22 Sep
Show the underlying numbers (most recent 120)
Session30-day ATM IV25-delta RRTerm slopeClose
2026-09-2252.86%+1.220.917$276.42
2026-09-2153.35%+2.230.905$284.10
2026-09-1851.41%+1.810.944$283.83
2026-09-1751.95%+0.070.929$278.85
2026-09-1652.55%+2.460.924$276.41
2026-09-15———$277.09
2026-09-14———$276.93
2026-09-11———$259.71
2026-09-10———$262.93
2026-09-09———$279.17
2026-09-08———$289.00
2026-09-04———$301.96
2026-09-03———$312.96
2026-09-02———$306.07
2026-09-01———$305.44
2026-08-31———$313.55
2026-08-28———$308.98
2026-08-27———$304.47
2026-08-26———$295.45
2026-08-25———$296.08
2026-08-24———$305.31
2026-08-21———$299.91
2025-06-30———$447.28
2025-06-27———$441.43
2025-06-26———$437.03
2025-06-25———$439.87
2025-06-24———$437.60
2025-06-23———$437.03
2025-06-20———$422.34
2025-06-18———$425.04
2025-06-17———$423.70
2025-06-16———$421.30
2025-06-13———$419.90
2025-06-12———$424.17
2025-06-11———$423.38
2025-06-10———$425.60
2025-06-09———$426.76
2025-06-06———$432.35
2025-06-05———$431.48
2025-06-04———$433.79
2025-06-03———$434.52
2025-06-02———$456.56
2025-05-30———$458.26
2025-05-29———$465.57
2025-05-28———$460.27
2025-05-27———$462.99
2025-05-23———$462.80
2025-05-22———$463.99
2025-05-21———$464.31
2025-05-20———$470.16
2025-05-19———$470.39
2025-05-16———$473.32
2025-05-15———$469.41
2025-05-14———$459.87
2025-05-13———$451.43
2025-05-12———$456.40
2025-05-09———$454.62
2025-05-08———$448.49
2025-05-07———$440.20
2025-05-06———$429.82
2025-05-05———$433.09
2025-05-02———$434.56
2025-05-01———$429.89
2025-04-30———$432.22
2025-04-29———$428.71
2025-04-28———$422.90
2025-04-25———$424.47
2025-04-24———$428.15
2025-04-23———$425.52
2025-04-22———$423.96
2025-04-21———$413.03
2025-04-17———$427.05
2025-04-16———$427.23
2025-04-15———$436.23
2025-04-14———$433.00
2025-04-11———$425.44
2025-04-10———$416.69
2025-04-09———$426.82
2025-04-08———$398.85
2025-04-07———$405.58
2025-04-04———$416.19
2025-04-03———$437.15
2025-04-02———$451.72
2025-04-01———$457.01
2025-03-31———$454.64
2025-03-28———$448.76
2025-03-27———$449.23
2025-03-26———$441.24
2025-03-25———$439.40
2025-03-24———$432.11
2025-03-21———$432.86
2025-03-20———$430.93
2025-03-19———$438.40
2025-03-18———$439.82
2025-03-17———$439.65
2025-03-14———$436.85
2025-03-13———$427.50
2025-03-12———$429.87
2025-03-11———$431.17
2025-03-10———$442.91
2025-03-07———$440.73
2025-03-06———$441.70
2025-03-05———$445.42
2025-03-04———$444.72
2025-03-03———$458.09
2025-02-28———$461.74
2025-02-27———$454.71
2025-02-26———$453.68
2025-02-25———$462.94
2025-02-24———$461.56
2025-02-21———$461.78
2025-02-20———$466.13
2025-02-19———$466.18
2025-02-18———$460.10
2025-02-14———$456.09
2025-02-13———$459.39
2025-02-12———$454.21
2025-02-11———$454.28
2025-02-10———$460.66
2025-02-07———$466.79

The chart covers every session in the archive, 226 in total. The table lists the most recent 120.

25-delta risk reversal

Last 226 sessions

-1.00.01.02.03.02026-09-16 — 25-delta RR (volatility points) 2.52026-09-17 — 25-delta RR (volatility points) 0.12026-09-18 — 25-delta RR (volatility points) 1.82026-09-21 — 25-delta RR (volatility points) 2.22026-09-22 — 25-delta RR (volatility points) 1.216 Sep17 Sep18 Sep21 Sep22 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

24d (2026-10-16) · 59d (2026-11-20) · 150d (2027-02-19)

45%50%55%60%65%2026-10-16 (24d) — 20Δ C — IV 54.76%2026-10-16 (24d) — 25Δ C — IV 55.82%2026-10-16 (24d) — 30Δ C — IV 55.36%2026-10-16 (24d) — 35Δ C — IV 54.88%2026-10-16 (24d) — 40Δ C — IV 54.68%2026-10-16 (24d) — 45Δ C — IV 54.63%2026-10-16 (24d) — ATM — IV 54.61%2026-10-16 (24d) — 45Δ P — IV 54.65%2026-10-16 (24d) — 40Δ P — IV 54.88%2026-10-16 (24d) — 35Δ P — IV 55.19%2026-10-16 (24d) — 30Δ P — IV 55.64%2026-10-16 (24d) — 25Δ P — IV 56.04%2026-10-16 (24d) — 20Δ P — IV 56.54%2026-10-16 (24d) — 15Δ P — IV 58.91%2026-10-16 (24d) — 10Δ P — IV 59.94%24d2026-11-20 (59d) — 20Δ C — IV 49.63%2026-11-20 (59d) — 25Δ C — IV 48.44%2026-11-20 (59d) — 30Δ C — IV 48.10%2026-11-20 (59d) — 35Δ C — IV 48.10%2026-11-20 (59d) — 40Δ C — IV 48.55%2026-11-20 (59d) — 45Δ C — IV 48.90%2026-11-20 (59d) — ATM — IV 49.25%2026-11-20 (59d) — 45Δ P — IV 49.60%2026-11-20 (59d) — 40Δ P — IV 49.78%2026-11-20 (59d) — 35Δ P — IV 49.98%2026-11-20 (59d) — 30Δ P — IV 50.39%2026-11-20 (59d) — 25Δ P — IV 51.85%2026-11-20 (59d) — 20Δ P — IV 52.44%2026-11-20 (59d) — 15Δ P — IV 53.92%59d2027-02-19 (150d) — 25Δ C — IV 47.34%2027-02-19 (150d) — 30Δ C — IV 47.66%2027-02-19 (150d) — 35Δ C — IV 47.74%2027-02-19 (150d) — 40Δ C — IV 47.77%2027-02-19 (150d) — 45Δ C — IV 47.80%2027-02-19 (150d) — ATM — IV 47.85%2027-02-19 (150d) — 45Δ P — IV 48.14%2027-02-19 (150d) — 40Δ P — IV 49.02%2027-02-19 (150d) — 35Δ P — IV 49.57%2027-02-19 (150d) — 30Δ P — IV 49.62%2027-02-19 (150d) — 25Δ P — IV 49.64%2027-02-19 (150d) — 20Δ P — IV 50.92%150d10Δ 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
Delta24d59d150d
20Δ call54.76%49.63%—
25Δ call55.82%48.44%47.34%
30Δ call55.36%48.10%47.66%
35Δ call54.88%48.10%47.74%
40Δ call54.68%48.55%47.77%
45Δ call54.63%48.90%47.80%
ATM54.61%49.25%47.85%
45Δ put54.65%49.60%48.14%
40Δ put54.88%49.78%49.02%
35Δ put55.19%49.98%49.57%
30Δ put55.64%50.39%49.62%
25Δ put56.04%51.85%49.64%
20Δ put56.54%52.44%50.92%
15Δ put58.91%53.92%—
10Δ put59.94%——

Wing readings by expiration

ExpirationDaysForwardATM IV25Δ put25Δ callRRButterflyQuotes
2026-10-1624$279.4554.61%56.04%55.82%+0.23+1.3210
2026-11-2059$281.3149.25%51.85%48.44%+3.41+0.9013
2027-02-19150$283.3147.85%49.64%47.34%+2.30+0.6410
2027-03-19178$283.2747.49%49.19%46.44%+2.74+0.3217

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

4 listed expirations produced a usable reading

46%48%50%52%54%56%2026-10-16 — 24 days — at-the-money IV 54.61%2026-11-20 — 59 days — at-the-money IV 49.25%2027-02-19 — 150 days — at-the-money IV 47.85%2027-03-19 — 178 days — at-the-money IV 47.49%306090days 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
2026-10-1624 days$279.4554.61%$282.2010
2026-11-2059 days$281.3149.25%$286.8813
2027-02-19150 days$283.3147.85%$296.9610
2027-03-19178 days$283.2747.49%$299.2817

Constant maturities

Interpolated between the bracketing listed expirations, in total variance

30 days
52.86%
60 days
49.21%
90 days
48.46%
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 226 sessions

0.850.900.951.001.052026-09-16 — 90-day over 30-day 0.922026-09-17 — 90-day over 30-day 0.932026-09-18 — 90-day over 30-day 0.942026-09-21 — 90-day over 30-day 0.902026-09-22 — 90-day over 30-day 0.9216 Sep17 Sep18 Sep21 Sep22 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.

Earnings

What the options priced in before each report, and what happened

Next report

2026-09-30Before the openAnnounced

How the pricing has held up

Over the last 5 reports

Landed inside the implied band
4 of 5
80% — about 68% is what an exactly-priced event gives
Mean implied move
5.5%
Mean move that happened
8.9%
absolute

Reports

Newest first. The implied move is one standard deviation, priced from the session before the release.

ReportSessionImplied ±RealisedRealised / implied
2026-09-17Time not stated3.3%+1.8%0.55×
2026-07-01Before the open———
2026-03-31Before the open———
2025-12-18Before the open———
2025-09-18After the close———
2025-06-23Before the open7.9%+3.5%0.44×
2025-03-20After the close2.7%-30.4%11.10×
2024-12-19Before the open6.6%+3.5%0.54×
2024-09-19Before the open6.9%+5.1%0.74×
2024-06-21Before the open———
2024-03-21Before the open———
2023-12-19Before the open———
2023-09-21Before the open———

The implied move is read from the at-the-money straddle on the first expiration strictly after the report date, converted to a one-standard-deviation move and divided by the forward. Realised moves are the close-to-close return across the event, measured from the session before the release to the session after it.

Report dates that have already happened come from the company’s own 8-K filing and are exact. A date still in the future is either one the company has announced, or an estimate from its reporting cadence.