moneyheap
GNTX · Analysis updated Nov 10, 2026, 6:00 PM ET
Why is Gentex Corporation (GNTX) stock moving?
GNTX has fallen from a close of 21.74 on Oct 22 to 19.42 on Nov 10, a decline of about 10.7%. The sharpest move came on Oct 23, when the stock dropped 5.0% to 20.66 on 4.45M shares, the day the Q3 results were released. Since then the stock has made lower closes on most sessions, and the Nov 10 close of 19.42 sits near the session low of 19.24, which is the lowest level in the 30-day data. Volume has eased from the results-day spike to roughly 2.3M–2.9M shares a day, with a modest uptick on Nov 6, the day the 10-Q was filed. The only other news item, the SEMA showcase announcement, is routine. The input does not include the Q3 press release or the 10-Q text, so the reasons for the post-earnings decline cannot be confirmed from the news provided.
News behind the analysis
- 10-QQuarterly report filed with the SEC on Nov 6. The filing text was not included in the input, so no figures from it are cited here.
- 8-K (results of operations, exhibits)Gentex reported third-quarter 2026 results for the quarter ended Sept 30 in a news release attached as Exhibit 99.1. The release text was not included in the input, so the reported figures are not known.
- Gentex Corporation to Showcase Latest Automotive Technology at SEMA 2026Gentex announced it will exhibit at the SEMA show in Las Vegas, featuring custom car reveals and its latest technologies for OEMs and the aftermarket. This is routine event news with no financial impact disclosed.
About Gentex Corp
Gentex is a Michigan-based maker of auto-dimming rearview mirrors, digital vision and connected-car electronics, and dimmable glass. It is the dominant global supplier of auto-dimming mirrors and has broadened into fire protection, medical devices, aerospace dimmable windows, and consumer electronics and premium audio after buying VOXX in 2025.
How it makes money
Most of its revenue comes from selling auto-dimming mirrors, full-display camera mirrors, HomeLink garage-door modules and other electronics to automakers. Automotive was about $553 million of roughly $648 million in Q3 2026 sales, or around 85%. The rest comes from VOXX consumer electronics and premium audio, plus fire protection, medical, and aircraft dimmable windows. Full-year 2026 revenue is guided at about $2.65 billion.
What usually moves GNTX
- Global light-vehicle production volumes
- Automaker program wins and losses, plus China demand
- Precious metals costs and tariffs affecting gross margin
- Growth in non-auto lines like premium audio and medical
- Share buybacks