Options Skew Analytics

CNC options analytics

CNC · Stock

Data as of 6 November 2026 (end of day)

CNC options are pricing a 30-day at-the-money volatility of 40.6%, a move of about ±11.6% over the next month. That is higher than 44% of the 219 sessions in its trailing year.

Its 25-delta puts carry 6.25 volatility points more than the calls, which is further than on all but 6% of the past year.

Its next earnings report is 2027-01-26 (estimated from its reporting cadence).

Across its last 6 reports the options market priced an average move of ±4.4% and CNC moved 27.2% on average, staying inside the priced band 2 times out of 6.

Current readings

30-day ATM implied volatilityⓘ
40.62%

Prices a move of about ±11.6% over 30 days, or ±2.6% on a typical day.

Higher than 44% of the past year.

25-delta risk reversalⓘ
+6.25

Puts carry 6.25 volatility points more than calls the same distance from the money.

Higher than 94% of the past year.

25-delta butterflyⓘ
+3.26

The wings carry 3.26 volatility points more than at-the-money.

Term structure slopeⓘ
1.032

90-day volatility is 3% above 30-day.

Higher than 53% of the past year.

Where 30-day implied volatility sits

Against 219 prior sessions (one-year window)

40.6% — 44th percentile
26.3%63.8%
IV percentile, 1 year
44%
IV rank, 1 year
38%
IV percentile, 2 years
55%
IV rank, 2 years
45%

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
$69.74
30-day implied forward
$70.64
60-day ATM IV
41.22%
90-day ATM IV
41.92%
180-day ATM IV
43.16%
Expirations used
9
Total open interest
161,365
Put / call open interest
0.34

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 325 sessions

0%20%40%60%80%29 Aug18 Dec30 Apr25 Aug6 Nov
Show the underlying numbers (most recent 120)
Session30-day ATM IV25-delta RRTerm slopeClose
2026-11-0640.62%+6.251.032$69.74
2026-11-0544.01%+4.370.938$74.17
2026-11-0441.57%+0.650.982$76.01
2026-11-0344.01%+2.930.942$67.48
2026-11-0244.03%+5.260.943$66.53
2026-10-3044.28%-1.300.910$68.45
2026-10-2939.95%+2.330.997$68.62
2026-10-2840.19%+1.970.946$67.05
2026-10-2741.94%+0.350.960$68.71
2026-10-2650.47%+2.420.839$68.03
2026-10-2349.56%+0.300.850$70.17
2026-10-2250.19%+2.460.835$71.24
2026-10-2150.85%+1.280.836$70.24
2026-10-2051.66%+0.500.823$70.81
2026-10-1950.27%+1.100.829$68.63
2026-10-1651.53%+2.670.819$69.16
2026-10-1551.09%+0.550.829$70.51
2026-10-1453.04%-0.710.804$70.16
2026-10-1352.89%+2.060.818$68.86
2026-10-0951.34%+1.240.839$65.36
2026-10-0854.85%+1.550.790$64.54
2026-10-0753.90%+1.580.822$64.99
2026-10-0651.92%+0.700.848$64.61
2026-10-0551.86%+1.130.843$64.30
2026-10-02———$62.99
2026-10-0152.99%+0.730.839$60.99
2026-09-3052.21%+1.270.846$62.12
2026-09-2951.33%+1.000.871$62.21
2026-09-2851.74%-0.930.863$62.53
2026-09-2542.36%+1.161.036$61.82
2026-09-2444.88%+1.140.998$61.92
2026-09-2343.37%+1.951.038$62.08
2026-09-2242.29%+1.071.057$63.30
2026-09-2144.68%-0.581.014$64.99
2026-09-1841.33%+0.311.074$65.11
2026-09-1743.10%+1.181.034$67.10
2026-09-1644.48%+0.871.050$66.01
2026-09-15———$67.66
2026-09-1445.55%+2.120.958$69.41
2026-09-11———$66.42
2026-09-10———$65.40
2026-09-0940.57%+3.231.169$64.06
2026-09-08———$64.58
2026-09-0438.68%+3.511.071$67.04
2026-09-0338.02%+1.681.108$68.02
2026-09-02———$67.34
2026-09-01———$65.23
2026-08-3137.90%+0.411.110$64.34
2026-08-2837.06%+0.191.203$64.75
2026-08-2740.15%+2.791.121$65.33
2026-08-26———$65.47
2026-08-2537.74%+0.781.101$65.00
2026-08-2439.75%-0.511.055$65.65
2026-08-2137.97%+1.061.159$65.02
2026-08-2039.53%+1.631.101$64.14
2026-08-1937.74%+0.451.169$64.70
2025-09-2962.46%-1.760.878$35.21
2025-09-2651.49%-2.041.082$34.86
2025-09-2553.18%-0.691.058$34.39
2025-09-2449.88%-0.961.126$34.65
2025-09-2359.22%-4.920.937$32.75
2025-09-2255.48%-7.341.007$32.70
2025-09-1948.75%-3.591.123$31.77
2025-09-1850.98%-3.551.082$32.17
2025-09-1749.08%-1.601.110$32.02
2025-09-1649.94%-3.361.090$31.80
2025-09-1549.44%-1.691.108$32.64
2025-09-1248.60%-2.031.109$33.26
2025-09-1150.26%-2.991.088$34.08
2025-09-1056.95%-0.251.053$31.27
2025-09-0955.88%-0.531.069$31.06
2025-09-0850.61%-0.151.143$28.84
2025-09-0551.44%-2.391.107$28.98
2025-09-0451.39%-2.331.127$28.65
2025-09-0346.61%-1.801.208$30.06
2025-09-0246.76%-2.331.208$29.62
2025-08-2945.31%-1.161.230$29.04
2025-08-2843.74%-3.211.261$28.38
2025-08-2745.70%-1.161.224$28.84
2025-08-2645.12%-1.971.231$28.66
2025-08-2545.47%-2.291.240$29.08
2025-08-2244.77%-1.591.237$29.41
2025-08-2145.81%-2.471.219$28.81
2025-08-2047.61%-5.381.177$29.40
2025-08-1948.39%-5.451.157$29.33
2025-08-1845.48%-2.591.216$28.99
2025-08-1545.41%-2.561.190$28.49
2025-08-1444.42%-0.101.164$26.93
2025-08-1345.29%-0.151.135$27.07
2025-08-1248.54%-0.391.083$26.17
2025-08-1144.79%-3.361.157$25.25
2025-08-0844.91%-1.871.165$25.59
2025-08-0746.37%-1.641.136$25.26
2025-08-0646.06%-0.901.146$25.21
2025-08-0545.71%+0.491.148$25.89
2025-08-0445.96%-2.331.129$26.21
2025-08-0146.46%-0.401.122$25.91
2025-07-3146.20%-2.061.093$26.07
2025-07-3043.97%-1.181.107$25.79
2025-07-2948.51%+2.401.036$25.53
2025-07-2846.75%-2.141.098$26.86
2025-07-2547.72%-1.361.049$28.39
2025-07-2462.10%-0.840.906$26.76
2025-07-2356.59%-6.210.923$29.42
2025-07-2257.47%-2.980.910$27.89
2025-07-2155.87%-1.550.935$27.43
2025-07-1858.02%-1.120.885$27.95
2025-07-1754.00%-1.640.914$29.14
2025-07-1652.72%-1.010.917$30.41
2025-07-1551.61%-3.960.927$30.00
2025-07-1452.18%-4.930.890$30.64
2025-07-1149.40%-2.960.912$31.44
2025-07-1048.33%-1.760.951$32.52
2025-07-0950.56%-2.800.935$33.09
2025-07-0849.10%+0.920.940$32.60
2025-07-0754.77%+1.790.934$33.05
2025-07-0363.37%+3.210.861$33.31
2025-07-02———$33.78
2025-07-0136.52%+4.580.943$56.65
2025-06-3039.54%+3.150.872$54.28

The chart covers every session in the archive, 325 in total. The table lists the most recent 120.

25-delta risk reversal

Last 325 sessions

-10.00.010.020.029 Aug18 Dec30 Apr25 Aug6 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

7d (2026-11-13) · 14d (2026-11-20) · 21d (2026-11-27)

40%45%50%55%60%2026-11-13 (7d) — 25Δ C — IV 51.91%2026-11-13 (7d) — 30Δ C — IV 51.52%2026-11-13 (7d) — 35Δ C — IV 51.39%2026-11-13 (7d) — 40Δ C — IV 51.53%2026-11-13 (7d) — 45Δ C — IV 51.66%2026-11-13 (7d) — ATM — IV 51.23%2026-11-13 (7d) — 45Δ P — IV 51.35%2026-11-13 (7d) — 40Δ P — IV 51.96%2026-11-13 (7d) — 35Δ P — IV 52.47%2026-11-13 (7d) — 30Δ P — IV 52.89%2026-11-13 (7d) — 25Δ P — IV 53.44%7d2026-11-20 (14d) — 15Δ C — IV 47.11%2026-11-20 (14d) — 20Δ C — IV 47.02%2026-11-20 (14d) — 25Δ C — IV 46.89%2026-11-20 (14d) — 30Δ C — IV 46.72%2026-11-20 (14d) — 35Δ C — IV 46.51%2026-11-20 (14d) — 40Δ C — IV 46.14%2026-11-20 (14d) — 45Δ C — IV 47.01%2026-11-20 (14d) — ATM — IV 46.82%2026-11-20 (14d) — 45Δ P — IV 46.58%2026-11-20 (14d) — 40Δ P — IV 46.88%2026-11-20 (14d) — 35Δ P — IV 48.35%2026-11-20 (14d) — 30Δ P — IV 54.45%2026-11-20 (14d) — 25Δ P — IV 49.21%14d2026-11-27 (21d) — 25Δ C — IV 43.22%2026-11-27 (21d) — 30Δ C — IV 43.47%2026-11-27 (21d) — 35Δ C — IV 43.53%2026-11-27 (21d) — 40Δ C — IV 43.64%2026-11-27 (21d) — 45Δ C — IV 43.55%2026-11-27 (21d) — ATM — IV 43.37%2026-11-27 (21d) — 45Δ P — IV 44.17%2026-11-27 (21d) — 40Δ P — IV 45.61%2026-11-27 (21d) — 35Δ P — IV 45.92%2026-11-27 (21d) — 30Δ P — IV 47.30%2026-11-27 (21d) — 25Δ P — IV 45.63%2026-11-27 (21d) — 20Δ P — IV 47.16%21d10Δ 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
Delta7d14d21d
15Δ call—47.11%—
20Δ call—47.02%—
25Δ call51.91%46.89%43.22%
30Δ call51.52%46.72%43.47%
35Δ call51.39%46.51%43.53%
40Δ call51.53%46.14%43.64%
45Δ call51.66%47.01%43.55%
ATM51.23%46.82%43.37%
45Δ put51.35%46.58%44.17%
40Δ put51.96%46.88%45.61%
35Δ put52.47%48.35%45.92%
30Δ put52.89%54.45%47.30%
25Δ put53.44%49.21%45.63%
20Δ put——47.16%

Wing readings by expiration

ExpirationDaysForwardATM IV25Δ put25Δ callRRButterflyQuotes
2026-11-137$70.0651.23%53.44%51.91%+1.53+1.448
2026-11-2014$70.1446.82%49.21%46.89%+2.33+1.2411
2026-11-2721$70.2543.37%45.63%43.22%+2.42+1.0612
2026-12-0428$70.6840.18%47.40%40.65%+6.75+3.8511
2026-12-1842$70.4342.35%45.42%41.23%+4.19+0.9711
2027-01-1570$70.6040.83%43.93%40.12%+3.81+1.1914
2027-03-19133$70.7643.12%44.25%42.21%+2.04+0.1116
2027-06-17223$71.6543.18%43.12%44.44%-1.31+0.6021
2027-09-17315$72.9942.98%45.36%42.05%+3.31+0.7220

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

9 listed expirations produced a usable reading

35%40%45%50%55%2026-11-13 — 7 days — at-the-money IV 51.23%2026-11-20 — 14 days — at-the-money IV 46.82%2026-11-27 — 21 days — at-the-money IV 43.37%2026-12-04 — 28 days — at-the-money IV 40.18%2026-12-18 — 42 days — at-the-money IV 42.35%2027-01-15 — 70 days — at-the-money IV 40.83%2027-03-19 — 133 days — at-the-money IV 43.12%2027-06-17 — 223 days — at-the-money IV 43.18%2027-09-17 — 315 days — at-the-money IV 42.98%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
2026-11-137 days$70.0651.23%$70.238
2026-11-2014 days$70.1446.82%$70.4411
2026-11-2721 days$70.2543.37%$70.6312
2026-12-0428 days$70.6840.18%$71.1211
2026-12-1842 days$70.4342.35%$71.1611
2027-01-1570 days$70.6040.83%$71.7414
2027-03-19133 days$70.7643.12%$73.2016
2027-06-17223 days$71.6543.18%$75.8521
2027-09-17315 days$72.9942.98%$79.0520

Constant maturities

Interpolated between the bracketing listed expirations, in total variance

30 days
40.62%
60 days
41.22%
90 days
41.92%
180 days
43.16%

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 325 sessions

0.600.801.001.201.401.6029 Aug18 Dec1 May25 Aug6 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.

Earnings

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

Next report

2027-01-26Time not statedEstimated from its reporting cadence

How the pricing has held up

Over the last 6 reports

Landed inside the implied band
2 of 6
33% — about 68% is what an exactly-priced event gives
Mean implied move
4.4%
Mean move that happened
27.2%
absolute

Reports

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

ReportSessionImplied ±RealisedRealised / implied
2026-10-27After the close5.0%-2.4%0.48×
2026-07-28After the close———
2026-04-28After the close———
2026-02-06After the close———
2025-10-29After the close———
2025-07-25After the close6.6%+127.9%19.37×
2025-07-01After the close2.4%+14.2%5.98×
2025-04-25After the close5.3%+12.2%2.30×
2025-02-04After the close2.5%+5.6%2.22×
2024-10-25After the close4.4%+0.7%0.17×
2024-07-26After the close———
2024-07-23Before the open———
2024-04-26After the close———
2024-02-06After the close———
2023-10-24After the close———

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.