Plexus Corp
PLXSAbove valueExpectations · demandingHeld by 1 superinvestor.
SEC 10-K · fundamentals
Business quality
as of 2025-09-27Valuation basis: trailing twelve months to 2026-07-04 — latest 10-K plus unaudited 10-Q filings.
- Revenue growth
- -1.1%
- Net margin
- 4.3%
- ROE
- 11.9%
- FCF margin
- 3.8%
Valuation · value band
Above fair value
Zero-growth floor
$56
Central IV
$69
Optimistic top
$118
Plexus Corp (PLXS): Two methods value the business — a conservative owner-earnings DCF and a growth-credited Greenwald estimate, $56–$118 / sh. Today’s price sits above both (price $239 as of 2026-09-02).
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 4% (lower of historical trend and fundamental cap, capped by moat) · moat 10 yr · discount 10.6% · Zero-growth downside $56
Price as of 2026-09-02 · yahoo · DGS10 4.8% @ 2026-09-01.
Method & numbers
Model cautions
- 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 $47.13 – $83.04 · Greenwald $88.00 – $118.42 (neutral $103.03) · zero-growth base $79.64 · reproduction $56.01
Moat Franchise (moat) · terminal value 48% of present value · owner-earnings yield 2% vs 10Y 4.8%.
Graham earnings-power value (normalized NOPAT)$67.25 – $79.64 / 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 2026-07-04, 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 77% (> 50%); estimate is degraded. Share-based compensation is left as a real expense (not added back).
Buffett owner-earnings value$46.81 – $57.21 / 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 2026-07-04, 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 77% (> 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 $1.53B = $56.01 / sh. Total book value (shareholders' equity ÷ diluted shares); intangibles not separated — goodwill/intangibles unavailable this period.
Moat reading: Franchise test compares earnings power (EPV) against reproduction value (tangible net assets + capitalized R&D). EPV well above reproduction value signals a moat; near it, a commodity; below it, value destruction. Dual reproduction test unavailable (intangibles not separated). A directional reading, not a verdict.
Assumes a narrow moat · competitive-advantage period ≈ 10 years.
Growth value: if the moat holds for 10 yr at ROIIC ≈ 30%, $8.36–$38.78 / sh (neutral $23.38). Conservative, not a forecast.
Window TTM 2026-07-04, FY 2024, 2023, 2022, 2021 · discount band 9%–11% · normalized tax 13% (Average effective tax rate over 5 year(s), capped at the statutory 21%.) · diluted shares.
Owner-earnings DCF: growth g₁ 4% · OE FY TTM 2026-07-04, 2024, 2023, 2022, 2021 · Discount band: 9.29%–12.00% (DGS10 +4.5% to a 12% strict end, as of 2026-09-01). 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 40%.
Valuation basis: trailing twelve months to 2026-07-04 — latest 10-K plus unaudited 10-Q filings.
What the price is betting
Today's price pencils in about 27.5% a year in owner-earnings for the next few years. Revenue actually grew 3.7% a year.
The market wants it well ahead of its own track record.
SEC 13F · holders
Superinvestors Holding This Security
1 holder · $433.2M combined · this quarter +0 opened / -0 exited
- Value$433.2MWeight (prev→now)6.2% → 7.3% ▲
SEC 13F · notes
Written summary
Written summary
Plexus Corp (PLXS) is held by 1 of the superinvestors tracked on Compounder, with a combined $433.2M in reported 13F value. The largest position belongs to Fred Martin, where it makes up 7.3% of the portfolio.
Over the latest quarter, 0 of the tracked filers opened a new position in PLXS, 0 added to existing ones, 1 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.
SEC 13F · co-ownership
Also held by these investors
Investors holding Plexus Corp (PLXS) also commonly hold →
- Viasat IncVSAT1 holder
- Everpure Inc-AP1 holder
- Garmin LtdGRMN1 holder
- Arista Networks IncANET1 holder
- Cognex CorpCGNX1 holder
- Expand Energy CorpEXE1 holder
PLXS's price is not below its conservative value band. See current strike-zone stocks
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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