IntraAlpha
Create free account Start free

Gentex Corporation Common Stock GNTX

i

Market datapartial · fetched 2026-11-06T21:00:26.339Z

Delta surfaceAlpaca · derived absolute-delta buckets ·

Calculation methodology

Options historyIV: ThetaData historical Greeks, equal-weight mean of call/put 50-delta IV across the next four listed Friday-cycle expirations, including holiday shifts verified against ThetaData’s market calendar. Missing inputs leave gaps. Skew: equal-weight mean of put minus call IV across those four expirations. IV-implied move history: mean of each expiration’s average call/put IV multiplied by the square root of remaining calendar days divided by 365.25; percentage of spot, not a quoted straddle premium.

History data

PriceAlpaca · sip · 2026-11-06T21:00:06.400306472Z

FundamentalsAlpha Vantage · unavailable

Share price$19.88
1D-0.6%
AH$19.82$19.92$20.02$20.12$20.225:30 AM6:30 AM9:00 AM1:00 PM2:00 PMGNTX
Sold putSold callAH

Gentex Corporation Common Stock options

Live interpolated GNTX call and put midpoint premiums by absolute delta.Gentex Corporation Common Stock$0.00$0.27$0.54$0.81$1.08$-0.12$0.19$0.50$0.81$1.1220Δ25Δ30Δ35Δ40Δ45Δ50Δ55Δ60Δ65Δ70Δ75Δ80Δ20Δ C/P unavailable: no unambiguous, price-consistent delta bracketC/P —25Δ C/P unavailable: no unambiguous, price-consistent delta bracketC/P —30Δ C/P unavailable: no unambiguous, price-consistent delta bracketC/P —35Δ C/P unavailable: no unambiguous, price-consistent delta bracketC/P —40Δ C/P unavailable: no unambiguous, price-consistent delta bracketC/P —45Δ C/P unavailable: no unambiguous, price-consistent delta bracketC/P —50Δ C/P unavailable: no unambiguous, price-consistent delta bracketC/P —55Δ C/P unavailable: no unambiguous, price-consistent delta bracketC/P —60Δ C/P unavailable: no unambiguous, price-consistent delta bracketC/P —65Δ C/P unavailable: no unambiguous, price-consistent delta bracketC/P —70Δ C/P unavailable: no unambiguous, price-consistent delta bracketC/P —75Δ C/P unavailable: no unambiguous, price-consistent delta bracketC/P —80Δ C/P unavailable: no unambiguous, price-consistent delta bracketC/P —OPTION PRICEGNTX PRICE
Puts——
Calls——
Skew——
Implied move——
Tilt——
Table
Values and derived Greeks for the plotted delta buckets
DeltaCallsPuts
Pseudo strikeIVB/E movePseudo strikeIVB/E move
20Δ
25Δ
30Δ
35Δ
40Δ
45Δ
50Δ
55Δ
60Δ
65Δ
70Δ
75Δ
80Δ

20Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

25Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

30Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

35Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

40Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

45Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

50Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

55Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

60Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

65Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

70Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

75Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

80Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

Options history

IV · four-Friday blend33.07%
Daily close
GNTX25.1%34.9%44.7%2026-08-31: 27.49%2026-09-02: 35.83%2026-09-09: 36.41%2026-09-14: 31.91%2026-09-15: 38.28%2026-09-17: 43.39%2026-09-18: 34.38%2026-09-21: 29.94%2026-09-22: 28.91%2026-09-25: 31.74%2026-09-28: 26.48%2026-09-29: 35.41%2026-10-16: 34.92%2026-10-19: 32.90%2026-10-21: 31.91%2026-10-22: 33.71%2026-10-28: 26.46%2026-10-29: 37.31%2026-10-30: 33.07%Aug 31Sep 25Oct 30
19 observations2026-08-31 — 2026-10-30
Table
DateIV (%)
27.49%
35.83%
36.41%
31.91%
38.28%
43.39%
34.38%
29.94%
28.91%
31.74%
26.48%
35.41%
34.92%
32.90%
31.91%
33.71%
26.46%
37.31%
33.07%