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Gentex Corp

GNTXWithin bandExpectations · modest

Held by 4 superinvestors.

Price$23.87
Holders4
Total value$327.3M

SEC 10-K · fundamentals

Business quality

as of 2025-12-31

Valuation basis: trailing twelve months to 2026-06-30 — latest 10-K plus unaudited 10-Q filings.

Revenue growth
+9.6%
Net margin
15.2%
ROE
15.5%
FCF margin
18.1%
Revenue $1.69B → $2.53B · 6y
What makes a business high quality

Valuation · value band

In fair-value range

$24/ sh · growth-anchored intrinsic value
margin of safety
fair value
above fair value
$24
cheaperpricier

Zero-growth floor

$18

Central IV

$24

Optimistic top

$40

Gentex Corp (GNTX): Two methods value the business — a conservative owner-earnings DCF and a growth-credited Greenwald estimate, $18–$40 / sh. Today’s price sits inside both (price $24 as of 2026-08-26).

The middle figure is the main read. The right end is the optimistic case under the same conservative caps — not an absolute ceiling.

Revenue growth 2% (lower of historical trend and fundamental cap, capped by moat) · moat 20 yr · discount 10.6% · Zero-growth downside $18

Price as of 2026-08-26 · yahoo · DGS10 4.7% @ 2026-08-26.

Method & numbers

Model cautions

  • Owner-earnings yield diverges sharply from the 10-year Treasury (over 300 bps).
  • The two methods’ midpoints differ materially — growth assumptions warrant review (over 20%).

A conservative intrinsic-value band (zero-growth floor to growth-capped DCF) plus a tangible asset floor — not investment advice, not a buy/sell signal, and not a price target.

Owner-earnings DCF $17.72 – $28.26 · Greenwald $28.69 – $39.77 (neutral $34.40) · zero-growth base $25.49 · reproduction $11.49

Moat Franchise (moat) · terminal value 19% of present value · owner-earnings yield 8% vs 10Y 4.7%.

Graham earnings-power value (normalized NOPAT)$21.06 – $25.49 / sh

Normalized NOPAT = average operating margin over the years shown × latest-year revenue × (1 − normalized tax); then + D&A − maintenance capex (write A). Unlevered (pre-interest, attributable to all capital). Capitalized at the 9–11% rate band (read as a WACC proxy). Enterprise → equity bridge applied: + cash − total debt.

Years: TTM 2026-06-30, 2024, 2023, 2022, 2021

v1 simplifications: Maintenance capex (degraded) deducted in full cash (write A): EPV = (NOPAT + D&A − maintenance capex) / WACC; no tax shield on the capex term. Maintenance-capex methods diverge by 122% (> 50%); estimate is degraded. Share-based compensation is left as a real expense (not added back). Operating margin is below its multi-year average (cyclical/declining): normalized margin capped at the latest year — no peak-margin capitalization (audit #2).

Buffett owner-earnings value$18.18 – $22.22 / sh

Owner earnings = average net income + average D&A − maintenance capex (zero-growth floor; no ΔNWC). Levered (starts from net income, already after interest — an equity-holder stream). Capitalized at the 9–11% rate band (read as a cost-of-equity proxy). No enterprise→equity bridge: the capitalized result is already equity value (subtracting debt would double-count interest).

Years: TTM 2026-06-30, 2024, 2023, 2022, 2021

v1 simplifications: Owner earnings = net income + D&A − maintenance capex (degraded); the working-capital change is excluded (maintenance ΔNWC ≈ 0; growth ΔNWC is carried in growth value, not double-counted). Maintenance-capex methods diverge by 122% (> 50%); estimate is degraded. One-time items are not separately normalized (multi-year averaging smooths them partially). Share-based compensation is left as a real expense (not added back); see the SBC/OE disclosure. Capitalized at the 9–11% band as a cost-of-equity proxy; no leverage premium applied (net cash or debt within the no-charge range).

Reproduction value = tangible net assets $1.99B + capitalized R&D $404.07M（FY 2026, 2024, 2023, 2022） = $11.49 / sh. Reproduction value = tangible net assets (equity − goodwill − intangibles) + capitalized R&D (5y straight-line), ÷ diluted shares.

Moat reading: Franchise test compares earnings power (EPV) against reproduction value on both AV_conservative (tangible + capitalized R&D) and AV_reproduction (conservative + acquired-reset proxy). Both must clear the franchise multiple for a moat signal; near it, a commodity; below it, value destruction. A directional reading, not a verdict.

Assumes a wide moat · competitive-advantage period ≈ 20 years (earnings intact, ROIC stable over history).

Growth value: if the moat holds for 20 yr at ROIIC ≈ 47%, $3.20–$14.28 / sh (neutral $8.91). Conservative, not a forecast.

Window TTM 2026-06-30, FY 2024, 2023, 2022, 2021 · discount band 9%–11% · normalized tax 15% (Average effective tax rate over 5 year(s), capped at the statutory 21%.) · diluted shares.

Owner-earnings DCF: growth g₁ 2% · OE FY TTM 2026-06-30, 2024, 2023, 2022, 2021 · Discount band: 9.16%–12.00% (DGS10 +4.5% to a 12% strict end, as of 2026-08-26). No enterprise→equity bridge: owner earnings already flow to shareholders (post-interest), so no net cash is added and no debt subtracted — matching the engine owner-earnings lamp. Two-method midpoint gap 37%.

Valuation basis: trailing twelve months to 2026-06-30 — latest 10-K plus unaudited 10-Q filings.

What the price is betting

Today's price pencils in about 2.6% a year in owner-earnings for the next few years. Revenue actually grew 9.2% a year.

Below what it has already done.

Roughly, the price needs its historical revenue growth to run about 3 more years to hold up.

How to read intrinsic value

SEC 13F · holders

Superinvestors Holding This Security

4 holders · $327.3M combined · this quarter +0 opened / -0 exited

This quarter2 added2 trimmed
Holders 5 → 4 · last 8q
  • John Rogers
    Value$210.0MWeight (prev→now)2.0% → 2.1% ▲
  • Fred Martin
    Value$115.3MWeight (prev→now)2.0% → 2.0% ▼
  • Ray Dalio
    Value$1.8MWeight (prev→now)0.0% → 0.0% ▲
  • Jeremy Grantham
    Value$305,641Weight (prev→now)0.0% → 0.0% ▼

SEC 13F · notes

Written summary

Gentex Corp (GNTX) is held by 4 of the superinvestors tracked on Compounder, with a combined $327.3M in reported 13F value. The largest position belongs to John Rogers, where it makes up 2.1% of the portfolio.

Other notable holders by value include Fred Martin (2.0% of its book), Ray Dalio (0.0% of its book) and Jeremy Grantham (0.0% of its book).

Over the latest quarter, 0 of the tracked filers opened a new position in GNTX, 2 added to existing ones, 2 trimmed, and 0 sold out entirely.

Holder counts and values reflect the most recent SEC Form 13F filings, through the quarter ended 2026-06-30. Source: SEC EDGAR. A 13F shows only long US-listed positions and can lag the real portfolio by up to 45 days, so this is disclosed long ownership, not a complete picture.

How to read a 13F

SEC 13F · co-ownership

Also held by these investors

Investors holding Gentex Corp (GNTX) also commonly hold →

GNTX's price is not below its conservative value band. See current strike-zone stocks

Also on

Sources· SEC EDGAR 13F as of 2026-06-30 · filed 2026-08-14

Educational data only — not investment advice. 13F positions are self-reported and can lag up to 45 days.

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