Gentex (GNTX) Options Chain
NASDAQ: GNTXConsumer DiscretionaryAuto Parts:O.E.M.USD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 6
- Share price
- $21.04
- Put/call ratio (OI)
- 0.54
- Put/call ratio (volume)
- 0.23
- Expected move
- ±$1.38
- Open interest (C / P)
- 111 / 60
GNTX options summary
The GNTX options chain for the October 16, 2026 expiration lists 5 call and 4 put contracts, with 6 days until expiration. Open interest stands at 111 calls and 60 puts, a put/call ratio of 0.54, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $20.00 strike is 51.0%, which implies the market expects a move of about ±$1.38 (6.5%) in Gentex stock by expiration.
The most open interest sits at the $25.00 call (62 contracts) and the $20.00 put (36 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
GNTX options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 6.35 | 5.40 | 8.20 | 15.00 | — | — | — | |||||
| 3.85 | 2.80 | 5.70 | 17.50 | — | — | — | |||||
| 4.21 | 0.00 | 0.00 | 20.00 | 0.00 | 0.20 | 0.05 | |||||
| 0.15 | 0.00 | 1.00 | 22.50 | 0.15 | 3.40 | 1.00 | |||||
| 0.05 | 0.00 | 1.40 | 25.00 | 3.20 | 4.60 | 2.20 | |||||
| — | — | — | 27.50 | 5.60 | 7.10 | 4.49 | |||||
In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.
Frequently asked questions
What is the GNTX put/call ratio?
For the October 16, 2026 expiration, the GNTX put/call ratio based on open interest is 0.54 (60 puts vs 111 calls), and 0.23 based on today's volume. A ratio above 1 means more puts than calls.
What is GNTX's implied volatility?
At-the-money implied volatility for GNTX options expiring October 16, 2026 is about 51.0%, an annualized estimate of how much the market expects Gentex stock to move.
How many GNTX option expiration dates are there?
GNTX has 4 listed expiration dates, from Oct 16, 2026 to Mar 19, 2027.
What does "in the money" mean?
A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.