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Gentex Corporation (GNTX)

NASDAQ

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22.90 -0.90 -3.78%

25/07 - Closed. Currency in USD

After Hours

22.94

+0.03

+0.13%

7:34:10 - Real-time Data

Type: Equity

Market: United States

Volume: 7,312,149
Bid/Ask: 0.00 / 0.00
Day's Range: 22.17 - 23.28

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Gentex Option Chain

Get free option data for GNTX. You'll find Call and Put Strike Prices, Last Price, Change, Volume, Implied Volatility, Theoretical and Greeks for Gentex options for the expiration dates selected. Below this information you can also find an open interest chart for the stock's options.

Expiration Date:

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Strike Price:

Quotes Analysis

Jul 25, 2026 20:33 GMT

Calls

Puts

Last	Chg.	Bid	Ask	Vol	Strike	Last	Chg.	Bid	Ask	Vol
0	0%	6.7	9	0	15.00	0.05	0%	0	0.1	2
GNTX Call 15.00 Exp: Aug 21, 2026 Last: 0 Chg.: 0% SymbolGNTX\|20260821\|15.00C Delta0.9947 Imp Vol0.6045 Bid6.7 Gamma0.0031 Theoretical7.91 Ask9 Theta-0.001 Intrinsic Value7.9 Volume0 Vega0.0007 Time Value-7.9 Open Interest0 Rho0.0102 Delta / Theta-988.7704 GNTX Put 15.00 Exp: Aug 21, 2026 Last: 0.05 Chg.: 0% SymbolGNTX\|20260821\|15.00P Delta-0.0237 Imp Vol0.8342 Bid0 Gamma0.0107 Theoretical0.05 Ask0.1 Theta-0.0053 Intrinsic Value-7.9 Volume2 Vega0.0035 Time Value7.95 Open Interest1 Rho-0.0004 Delta / Theta4.4282
0	0%	4.6	6.3	0	17.50	0.1	100%	0	0.15	3
GNTX Call 17.50 Exp: Aug 21, 2026 Last: 0 Chg.: 0% SymbolGNTX\|20260821\|17.50C Delta0.9705 Imp Vol0.5407 Bid4.6 Gamma0.0191 Theoretical5.45 Ask6.3 Theta-0.0044 Intrinsic Value5.4 Volume0 Vega0.004 Time Value-5.4 Open Interest0 Rho0.0124 Delta / Theta-219.8079 GNTX Put 17.50 Exp: Aug 21, 2026 Last: 0.1 Chg.: 100% SymbolGNTX\|20260821\|17.50P Delta-0.0447 Imp Vol0.6151 Bid0 Gamma0.0246 Theoretical0.08 Ask0.15 Theta-0.0066 Intrinsic Value-5.4 Volume3 Vega0.0059 Time Value5.5 Open Interest41 Rho-0.0008 Delta / Theta6.7331
2.65	-31.17%	1.65	4.2	2	20.00	0.15	0%	0	0.4	0
GNTX Call 20.00 Exp: Aug 21, 2026 Last: 2.65 Chg.: -31.17% SymbolGNTX\|20260821\|20.00C Delta0.9856 Imp Vol0.2282 Bid1.65 Gamma0.0232 Theoretical2.93 Ask4.2 Theta-0.0015 Intrinsic Value2.9 Volume2 Vega0.0021 Time Value-0.25 Open Interest3 Rho0.0145 Delta / Theta-639.201 GNTX Put 20.00 Exp: Aug 21, 2026 Last: 0.15 Chg.: 0% SymbolGNTX\|20260821\|20.00P Delta-0.129 Imp Vol0.4704 Bid0 Gamma0.0718 Theoretical0.2 Ask0.4 Theta-0.0113 Intrinsic Value-2.9 Volume0 Vega0.0131 Time Value3.05 Open Interest12 Rho-0.0021 Delta / Theta11.4364
					22.9	Price @ Jul 25, 2026 20:33 GMT
0.12	-73.33%	0	0.25	31	25.00	2.65	60.61%	2.1	2.35	4
GNTX Call 25.00 Exp: Aug 21, 2026 Last: 0.12 Chg.: -73.33% SymbolGNTX\|20260821\|25.00C Delta0.1417 Imp Vol0.2866 Bid0 Gamma0.1256 Theoretical0.13 Ask0.25 Theta-0.0075 Intrinsic Value-2.1 Volume31 Vega0.014 Time Value2.22 Open Interest262 Rho0.0023 Delta / Theta-18.7885 GNTX Put 25.00 Exp: Aug 21, 2026 Last: 2.65 Chg.: 60.61% SymbolGNTX\|20260821\|25.00P Delta-0.8468 Imp Vol0.3032 Bid2.1 Gamma0.1266 Theoretical2.22 Ask2.35 Theta-0.0075 Intrinsic Value2.1 Volume4 Vega0.0146 Time Value0.55 Open Interest176 Rho-0.0108 Delta / Theta112.7246
0.05	0%	0	0.2	2	27.50	0	0%	3.7	6.8	0
GNTX Call 27.50 Exp: Aug 21, 2026 Last: 0.05 Chg.: 0% SymbolGNTX\|20260821\|27.50C Delta0.081 Imp Vol0.4581 Bid0 Gamma0.0526 Theoretical0.1 Ask0.2 Theta-0.008 Intrinsic Value-4.6 Volume2 Vega0.0093 Time Value4.65 Open Interest94 Rho0.0013 Delta / Theta-10.13 GNTX Put 27.50 Exp: Aug 21, 2026 Last: 0 Chg.: 0% SymbolGNTX\|20260821\|27.50P Delta-0.7543 Imp Vol0.8357 Bid3.7 Gamma0.0606 Theoretical5.25 Ask6.8 Theta-0.0293 Intrinsic Value4.6 Volume0 Vega0.0195 Time Value-4.6 Open Interest0 Rho-0.0128 Delta / Theta25.7527
0	0%	0	1.15	0	30.00	0	0%	6.1	9.3	0
GNTX Call 30.00 Exp: Aug 21, 2026 Last: 0 Chg.: 0% SymbolGNTX\|20260821\|30.00C Delta0.1916 Imp Vol0.9842 Bid0 Gamma0.0445 Theoretical0.57 Ask1.15 Theta-0.0311 Intrinsic Value-7.1 Volume0 Vega0.017 Time Value7.1 Open Interest5 Rho0.0028 Delta / Theta-6.1659 GNTX Put 30.00 Exp: Aug 21, 2026 Last: 0 Chg.: 0% SymbolGNTX\|20260821\|30.00P Delta-0.7978 Imp Vol1.0189 Bid6.1 Gamma0.0445 Theoretical7.7 Ask9.3 Theta-0.0319 Intrinsic Value7.1 Volume0 Vega0.0175 Time Value-7.1 Open Interest0 Rho-0.0141 Delta / Theta25.0375

Open Positions

Calls

Puts

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Recent Quotes

	Name	Price	Chg.	Chg. %
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