Options Skew Analytics

NBIS options analytics

NBIS · Stock

Data as of 25 September 2026 (end of day)

Some metrics unavailable for this session

NBIS options are pricing a 30-day at-the-money volatility of 76.1%, a move of about ±21.8% over the next month. Its history here is 7 sessions, short of the 180 a percentile needs, so this reading is not yet ranked against its own past.

Its 25-delta calls carry 2.51 volatility points more than the puts.

Longer-dated options carry more: 90-day volatility is 11% above 30-day.

Its next earnings report is 2026-11-10 (estimated from its reporting cadence).

Current readings

30-day ATM implied volatilityⓘ
76.11%

Prices a move of about ±21.8% over 30 days, or ±4.8% on a typical day.

25-delta risk reversalⓘ
-2.51

Calls carry 2.51 volatility points more than puts the same distance from the money.

25-delta butterflyⓘ
+0.57

The wings carry 0.57 volatility points more than at-the-money.

Term structure slopeⓘ
1.108

90-day volatility is 11% above 30-day.

Where 30-day implied volatility sits

Against 7 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
$237.33
30-day implied forward
$238.53
60-day ATM IV
84.60%
90-day ATM IV
84.32%
180-day ATM IV
—
Expirations used
10
Total open interest
827,082
Put / call open interest
0.70

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 7 sessions

74%76%78%80%82%84%86%2026-09-17 — 30-day ATM IV 79%2026-09-18 — 30-day ATM IV 78%2026-09-21 — 30-day ATM IV 84%2026-09-22 — 30-day ATM IV 81%2026-09-23 — 30-day ATM IV 82%2026-09-24 — 30-day ATM IV 82%2026-09-25 — 30-day ATM IV 76%17 Sep21 Sep22 Sep24 Sep25 Sep
Show the underlying numbers (most recent 7)
Session30-day ATM IV25-delta RRTerm slopeClose
2026-09-2576.11%-2.511.108$237.33
2026-09-2482.04%-3.371.073$243.48
2026-09-2381.78%-7.081.085$226.61
2026-09-2281.35%-4.671.080$236.12
2026-09-2183.91%-6.421.051$232.80
2026-09-1878.18%-3.011.121$223.54
2026-09-1778.61%-2.311.101$217.99

The chart covers every session in the archive, 7 in total. The table lists the most recent 7.

25-delta risk reversal

Last 7 sessions

-8.0-6.0-4.0-2.00.02.02026-09-17 — 25-delta RR (volatility points) -2.32026-09-18 — 25-delta RR (volatility points) -3.02026-09-21 — 25-delta RR (volatility points) -6.42026-09-22 — 25-delta RR (volatility points) -4.72026-09-23 — 25-delta RR (volatility points) -7.12026-09-24 — 25-delta RR (volatility points) -3.42026-09-25 — 25-delta RR (volatility points) -2.517 Sep21 Sep22 Sep24 Sep25 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

7d (2026-10-02) · 14d (2026-10-09) · 21d (2026-10-16)

70%75%80%85%90%2026-10-02 (7d) — 5Δ C — IV 80.55%2026-10-02 (7d) — 10Δ C — IV 78.05%2026-10-02 (7d) — 15Δ C — IV 76.26%2026-10-02 (7d) — 20Δ C — IV 75.46%2026-10-02 (7d) — 25Δ C — IV 74.73%2026-10-02 (7d) — 30Δ C — IV 74.19%2026-10-02 (7d) — 35Δ C — IV 73.95%2026-10-02 (7d) — 40Δ C — IV 73.75%2026-10-02 (7d) — 45Δ C — IV 72.44%2026-10-02 (7d) — ATM — IV 73.32%2026-10-02 (7d) — 45Δ P — IV 72.18%2026-10-02 (7d) — 40Δ P — IV 72.80%2026-10-02 (7d) — 35Δ P — IV 72.46%2026-10-02 (7d) — 30Δ P — IV 72.73%2026-10-02 (7d) — 25Δ P — IV 72.53%2026-10-02 (7d) — 20Δ P — IV 72.50%2026-10-02 (7d) — 15Δ P — IV 73.01%2026-10-02 (7d) — 10Δ P — IV 73.58%2026-10-02 (7d) — 5Δ P — IV 76.35%7d2026-10-09 (14d) — 5Δ C — IV 82.60%2026-10-09 (14d) — 10Δ C — IV 78.80%2026-10-09 (14d) — 15Δ C — IV 77.54%2026-10-09 (14d) — 20Δ C — IV 76.05%2026-10-09 (14d) — 25Δ C — IV 75.06%2026-10-09 (14d) — 30Δ C — IV 74.84%2026-10-09 (14d) — 35Δ C — IV 74.61%2026-10-09 (14d) — 40Δ C — IV 74.16%2026-10-09 (14d) — 45Δ C — IV 73.34%2026-10-09 (14d) — ATM — IV 73.25%2026-10-09 (14d) — 45Δ P — IV 73.02%2026-10-09 (14d) — 40Δ P — IV 72.38%2026-10-09 (14d) — 35Δ P — IV 72.69%2026-10-09 (14d) — 30Δ P — IV 72.48%2026-10-09 (14d) — 25Δ P — IV 72.86%2026-10-09 (14d) — 20Δ P — IV 72.86%2026-10-09 (14d) — 15Δ P — IV 73.46%2026-10-09 (14d) — 10Δ P — IV 73.89%2026-10-09 (14d) — 5Δ P — IV 77.18%14d2026-10-16 (21d) — 5Δ C — IV 86.27%2026-10-16 (21d) — 10Δ C — IV 82.01%2026-10-16 (21d) — 15Δ C — IV 80.58%2026-10-16 (21d) — 20Δ C — IV 78.38%2026-10-16 (21d) — 25Δ C — IV 77.08%2026-10-16 (21d) — 30Δ C — IV 76.59%2026-10-16 (21d) — 35Δ C — IV 75.83%2026-10-16 (21d) — 40Δ C — IV 75.23%2026-10-16 (21d) — 45Δ C — IV 74.68%2026-10-16 (21d) — ATM — IV 74.50%2026-10-16 (21d) — 45Δ P — IV 74.41%2026-10-16 (21d) — 40Δ P — IV 74.17%2026-10-16 (21d) — 35Δ P — IV 74.17%2026-10-16 (21d) — 30Δ P — IV 74.35%2026-10-16 (21d) — 25Δ P — IV 74.15%2026-10-16 (21d) — 20Δ P — IV 74.16%2026-10-16 (21d) — 15Δ P — IV 74.56%2026-10-16 (21d) — 10Δ P — IV 75.23%2026-10-16 (21d) — 5Δ P — IV 78.25%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
5Δ call80.55%82.60%86.27%
10Δ call78.05%78.80%82.01%
15Δ call76.26%77.54%80.58%
20Δ call75.46%76.05%78.38%
25Δ call74.73%75.06%77.08%
30Δ call74.19%74.84%76.59%
35Δ call73.95%74.61%75.83%
40Δ call73.75%74.16%75.23%
45Δ call72.44%73.34%74.68%
ATM73.32%73.25%74.50%
45Δ put72.18%73.02%74.41%
40Δ put72.80%72.38%74.17%
35Δ put72.46%72.69%74.17%
30Δ put72.73%72.48%74.35%
25Δ put72.53%72.86%74.15%
20Δ put72.50%72.86%74.16%
15Δ put73.01%73.46%74.56%
10Δ put73.58%73.89%75.23%
5Δ put76.35%77.18%78.25%

Wing readings by expiration

ExpirationDaysForwardATM IV25Δ put25Δ callRRButterflyQuotes
2026-10-027$237.7873.32%72.53%74.73%-2.20+0.3256
2026-10-0914$238.0873.25%72.86%75.06%-2.21+0.7151
2026-10-1621$238.1074.50%74.15%77.08%-2.93+1.1253
2026-10-2328$238.4275.93%75.34%77.52%-2.17+0.5042
2026-10-3035$238.8076.47%75.58%78.77%-3.19+0.7139
2026-11-0642$239.4277.96%77.95%83.45%-5.50+2.7432
2026-11-2056$238.9984.68%84.29%88.06%-3.77+1.4946
2026-12-1884$239.7284.25%83.43%87.32%-3.89+1.1346
2027-01-15112$240.7184.52%83.13%87.09%-3.96+0.6051
2027-02-19147$241.5586.16%85.37%89.80%-4.43+1.4350

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

70%75%80%85%90%2026-10-02 — 7 days — at-the-money IV 73.32%2026-10-09 — 14 days — at-the-money IV 73.25%2026-10-16 — 21 days — at-the-money IV 74.50%2026-10-23 — 28 days — at-the-money IV 75.93%2026-10-30 — 35 days — at-the-money IV 76.47%2026-11-06 — 42 days — at-the-money IV 77.96%2026-11-20 — 56 days — at-the-money IV 84.68%2026-12-18 — 84 days — at-the-money IV 84.25%2027-01-15 — 112 days — at-the-money IV 84.52%2027-02-19 — 147 days — at-the-money IV 86.16%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
2026-10-027 days$237.7873.32%$239.0056
2026-10-0914 days$238.0873.25%$240.5451
2026-10-1621 days$238.1074.50%$241.9353
2026-10-2328 days$238.4275.93%$243.7542
2026-10-3035 days$238.8076.47%$245.5839
2026-11-0642 days$239.4277.96%$247.9432
2026-11-2056 days$238.9984.68%$252.5146
2026-12-1884 days$239.7284.25%$260.1246
2027-01-15112 days$240.7184.52%$268.5951
2027-02-19147 days$241.5586.16%$280.5050

Constant maturities

Interpolated between the bracketing listed expirations, in total variance

30 days
76.11%
60 days
84.60%
90 days
84.32%
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 7 sessions

0.951.001.051.101.152026-09-17 — 90-day over 30-day 1.102026-09-18 — 90-day over 30-day 1.122026-09-21 — 90-day over 30-day 1.052026-09-22 — 90-day over 30-day 1.082026-09-23 — 90-day over 30-day 1.092026-09-24 — 90-day over 30-day 1.072026-09-25 — 90-day over 30-day 1.1117 Sep21 Sep22 Sep24 Sep25 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

2026-11-10Time not statedEstimated from its reporting cadence