Plexus Corp. Shareholders: Ownership Structure, Brands, and Acquisition History
Last updated: Oct-2026Ownership Structure
Ownership Analysis
Four institutions own 42.6% of Plexus, while insiders own just 1.78%. BlackRock holds 15.41% and Vanguard 13.77%, so the two index giants control close to 29% of the shares between them, a block we regard as passive. Directors and officers hold 477,563 shares, worth roughly $130 million at today's $7.28 billion market value, which we consider modest for a company this size. We therefore do not expect any owner to push the company in a new direction, and no holder has the stake or the motive to challenge the board.Decisions rest with Todd Kelsey and the board. The buyback is the lever they use most, and with only 26.65 million shares in total it is potent. A $100 million repurchase authorization retires about 1.4% of the company at today's price. In fiscal 2025 the company spent $65 million on repurchases out of $154 million of free cash flow, which is about 42%. Plexus does not pay a dividend, so buybacks are the main way cash returns to owners.The thin share count has a second effect. Index funds must hold the stock in proportion to its weight, and BlackRock and Vanguard each own more than 13% of it. When indexes rebalance, a few hundred thousand shares changing hands can move the price, and the stock has moved from the $258.75 average repurchase price of the third quarter to about $273 now.Our judgment is that shareholders trust management here more than they supervise it. That trust has been earned by a 56% rise in GAAP earnings per share in fiscal 2025 and a return on invested capital well above the cost of capital. It leaves little to restrain a mistake, so we would watch the pace of buybacks at high prices and any large acquisition more closely than we would at a company with an engaged anchor holder.
Direct Owners
Institutional Shareholders
Shareholder Analysis
Plexus has an unusually varied holder base for a stock this size. Disciplined Growth Investors owns 8.11%, and as an active growth manager it buys on earnings momentum. Dimensional, at 5.29%, buys by formula and leans toward cheaper shares. BlackRock and Vanguard simply track indexes, which we treat as steady demand. Each group wants something different from the company, and management has to keep all of them satisfied at once.We think the buyback shows that mix at work. The company repurchased $20.6 million in the fiscal third quarter at an average $258.75, leaving $21.4 million of a $100 million authorization. That is a small bite, and with the stock now at about $273 we expect management to be more selective. A repurchase made at 44 times GAAP earnings has to be justified by growth, and growth is exactly what the active holders want to see continue.The growth holders are the ones we would watch. Fiscal 2026 revenue is on pace to grow more than 20%, from $4.03 billion to roughly $4.9 billion, well above management's own goal of 9% to 12%. For us the watch point is whether Disciplined Growth Investors stays once growth slows to that goal. A growth manager that sells a stake of 2.17 million shares, worth about $590 million at today's price, would be hard for the market to absorb quickly. The company's repurchases of roughly $16 million to $21 million a quarter are only a fraction of that size.Value holders carry the opposite risk. Dimensional's formula leans on price relative to book value and earnings, and at 44 times earnings Plexus does not look cheap by those measures. We think the exit of value money is a gradual risk, and the exit of growth money a sudden one. Our view is that the holder base is healthy today and that Plexus must keep delivering growth to hold it.
Brands, Subsidiaries & Companies Owned
| Name | Type | Description |
|---|---|---|
| Plexus Asia-Pacific | Division | Largest region with $2.39B of fiscal 2025 revenue and about 58% of the workforce |
| Plexus Americas | Division | Home region centered on Neenah with $1.22B of fiscal 2025 revenue and about 30% of employees |
| Plexus Europe Middle East and Africa | Division | Smallest region with $440M of fiscal 2025 revenue and about 12% of employees |
| Plexus Design Centers | Division | Six design centers worldwide that feed engineering work into manufacturing programs |
| Plexus Sustaining Services | Brand | Repair, refurbishment and lifecycle extension for products Plexus built |
Portfolio Analysis
Plexus sells one service, building and supporting other companies' electronics, so we read its portfolio by region and market. Asia-Pacific produced $2.39 billion of fiscal 2025 revenue, 59% of the total, and employs 58% of the workforce. The Americas added $1.22 billion and Europe, the Middle East and Africa $440 million. In the third quarter of fiscal 2026 the split moved further toward Asia-Pacific at $774 million of $1.305 billion, while Europe slipped to $109 million, 8% of sales against 11% for fiscal 2025.By end market, fiscal 2025 industrial was 43%, healthcare and life sciences 40% and aerospace and defense 17%. We favor that mix: medical and defense products need lengthy customer qualification, which tends to keep programs in place for years. The third quarter of fiscal 2026 shows industrial rising to 45%, healthcare falling to 37% and aerospace and defense at 18%. By our math, annualized healthcare revenue of about $1.93 billion is up about 19% from fiscal 2025, while industrial is up about 37% and defense about 35%, so healthcare is growing but is being outrun by the other two.The company has about 190 customers, none above 10% of sales, though the ten largest are 49.1%, up from 47.8% a year earlier. Our concern is that one program loss weighs heavily, which is why we track the 141 new programs worth $941 million won in fiscal 2025 and the 31 programs worth $255 million won in the third quarter of fiscal 2026. The $941 million of wins equals 23% of fiscal 2025 revenue, which tells us the pipeline replenishes the base.Six design centers and a sustaining services business that handles repair and refurbishment give Plexus ways to stay with a product after it ships. We value those because they earn revenue after the first build and make customers less likely to switch.
Market Share & Competitors
| Company | Market Share | Revenue | Key Strength |
|---|---|---|---|
| Plexus ★ | N/A | $4.03B FY2025 | Regulated healthcare and aerospace programs |
| Jabil | N/A | $29.80B FY2025 | Scale across many end markets |
| Flex | N/A | $27.91B FY2026 | Broad global manufacturing footprint |
| Celestica | N/A | $12.39B FY2025 | Data center and communications exposure |
| Sanmina | N/A | $8.13B FY2025 | Industrial and defense customers |
Competitive Analysis
Plexus is the smallest name in the peer group we follow. Jabil's $29.80 billion, Flex's $27.91 billion for its year to March 2026, Celestica's $12.39 billion and Sanmina's $8.13 billion each dwarf Plexus's $4.03 billion in fiscal 2025. We do not read that as a handicap. Plexus targets regulated, low volume, high mix products, where engineering and compliance work tends to earn better margins than commodity assembly, and it competes on solving hard problems and not on scale.Fiscal 2026 shows the demand. Nine month revenue is $3.54 billion, the third quarter was a record $1.31 billion and fourth quarter guidance is $1.33 billion to $1.38 billion. We calculate that implies full year revenue of about $4.9 billion, up roughly 21%. The third quarter alone was 23% above the fourth quarter of fiscal 2025. Sanmina's trailing twelve month revenue is up 59% and Celestica's grew 28% in 2025, so Plexus is growing quickly but not alone.Our concern is margin. Guided non-GAAP operating margin of 6.1% to 6.5% is thin, so small cost misses show up quickly. GAAP operating margin was 5.0% in fiscal 2025. Return on invested capital of 14.6% against a cost of capital of 8.9% is a real strength, a spread of 5.7 points, and we would want to see it hold as revenue scales.Customer concentration is the other competitive fact. Plexus has about 190 customers, but the ten largest make up 49.1% of sales, and a larger rival can offer a big customer more locations, more purchasing power and wider services. Plexus answers with six design centers, a sustaining services business and a record of winning 141 programs in a year. At about 1.6 times trailing revenue, the market gives Plexus a premium for that record, and our view is that the premium is deserved only while program wins keep outpacing losses.
Acquisitions
| Company Acquired | Deal Value | Year | Description |
|---|---|---|---|
| Elamex Operations | $53.7M | 2000 | Turnkey electronic contract manufacturing in Juarez, Mexico |
| MCMS Inc assets | $45M | 2002 | Chapter 11 purchase that gave Plexus plants in Malaysia and China |
| Keltek Holdings Limited | $29.4M | 2000 | UK electronics manufacturer with facilities in Scotland and England |
| Qtron Inc | $29.0M | 2001 | Electronics manufacturing provider based in San Diego, California |
| e2E Corporation | $1.0M | 2000 | Circuit board design and engineering services with over 100 engineers |
| SeaMED Corporation | undisclosed | 1999 | Medical device design and manufacturing near Seattle |
| Agility Incorporated | undisclosed | 2000 | Complex circuit board assembly and system build in Massachusetts |
Acquisitions Analysis
Plexus's purchases cluster in a four year burst from 1999 to 2002. The five deals with disclosed prices total, by our sum, $158.1 million: Elamex in Juarez at $53.7 million, MCMS assets at $45 million, Keltek at $29.4 million, Qtron at $29.0 million and e2E at $1.0 million. Others, including SeaMED, Agility and circuit board operations from Shure and Intermec, did not disclose prices. They are small by today's standards, and we think that was the point. Each bought a capability or a location, such as Mexico, the United Kingdom or Asian plants, rather than a customer list.The mix is instructive. Elamex and Keltek gave Plexus plants in two new countries within a single year, 2000. SeaMED brought medical device design and regulatory skill near Seattle, which we see as the seed of today's healthcare business, now 37% to 40% of sales. e2E added more than 100 design engineers for $1.0 million, a very low price per engineer. MCMS bought out of Chapter 11 in 2002 gave Plexus plants in Malaysia and China, and we regard it as the most valuable of the group.Plexus has since grown mostly on its own: revenue reached $4.03 billion in fiscal 2025, and we have found no large acquisition behind that growth. The company reports 141 new manufacturing programs worth $941 million annualized in fiscal 2025, and 31 worth $255 million in the latest quarter. Our view is that management prefers to win programs than to buy them, and the 141 wins support that.The unused capacity to buy is notable. Free cash flow was $154 million in fiscal 2025 and the repurchase authorization is small, so Plexus has room to do a deal if it finds one. We would expect any future deal to look like the old ones: small, aimed at a capability such as design or a region, and funded from cash.
Acquisition Timeline
Merger & Spin-off History
Merger & Spin-off Analysis
Plexus has no merger or spin off in the record we reviewed. The history that matters is the acquisition run of 1999 to 2002, which took a Wisconsin circuit board maker global. Elamex gave it Mexican capacity in 2000, Keltek a United Kingdom base the same year, and the 2002 MCMS purchase out of Chapter 11 for $45 million opened Malaysia and China. Today's Asia-Pacific segment, now 59% of revenue and 58% of employees, starts with that last deal.A bankruptcy purchase also tells us Plexus bought at a discount when a rival failed. MCMS was a competitor in distress, and Plexus paid $45 million for its assets and not for the company, which generally means it took the plants and customers without the old liabilities. We think that is the best form of acquisition for an electronics manufacturer, because factories and workforces can be reused while old debts cannot.The 1999 to 2002 deals also coincided with a downturn. The technology bust of 2001 and 2002 hit electronics manufacturers hard, and the market for plants was weak. Plexus bought Qtron for $29.0 million in 2001 and MCMS in 2002 in that environment, and we regard the timing as part of the skill.Our takeaway is that one cheap, well timed deal can shape a company for decades, so we pay attention to any move management makes when peers falter. The company has since stayed independent and has not been a target in the record we reviewed. With 26.65 million shares and a $7.28 billion market value, Plexus is small enough to be digestible for a larger rival, and we would not rule out interest. But a buyer would face a customer base where the ten largest accounts are 49.1% of sales, and those customers could re-source programs if they dislike the new owner. That risk protects independence.
Ownership History
Ownership History Analysis
Peter Strandwitz and John Nussbaum founded Plexus in Neenah in 1979 as a contract builder of circuit boards. Revenue grew from $24.5 million in 1987, a year with a $1.3 million loss, to $53.2 million in 1988 and $157.4 million in 1992, then to $396.8 million in 1998 and $4.03 billion in fiscal 2025. That is about ten times the 1998 figure by our math, while employees rose from 2,400 to more than 20,000. That is a compound growth rate of roughly 9% a year since 1998.Ownership has, as we see it, moved toward institutions: the four largest holders now control 42.6%, and insiders hold 1.78%. We cannot show the starting point from the filings we reviewed, but a company founded by entrepreneurs and now run by a professional chief executive with directors owning under 2% has plainly passed from founders to the market. The directors' stake of 477,563 shares is worth about $130 million, meaningful but not controlling.We think that shift explains the company's current style, which stresses returns on capital, such as a 14.6% return on invested capital against an 8.9% cost of capital, over founder instincts. It also explains the preference for buybacks, which suit institutional holders who want per share growth. In fiscal 2025 Plexus bought back $65 million of stock and lifted GAAP earnings per share by 56%, to $6.26.The share count is the surprising feature. With 26.65 million shares and a stock price near $273, each share represents a lot of value, and a single 5% holder owns about 1.3 million shares. Our worry is only that institutions have fewer reasons to be patient than a founding family would, so a stumble in program wins could draw a quicker response from the owners than it would at a family controlled peer.
Ownership Explained
Plexus Corp. is a publicly traded electronics manufacturing services company, headquartered in Neenah, Wisconsin, that designs, builds, tests and services products for other companies. It has no controlling holder. The shares trade on the Nasdaq Global Select Market under the symbol PLXS, and about 26.65 million shares are outstanding, which gives the company a market value of about $7.3 billion.At the December 17, 2025 record date used in the proxy statement, four institutions held more than 5%. BlackRock held 4,123,364 shares, or 15.41%. The Vanguard Group held 3,683,845 shares, or 13.77%. Disciplined Growth Investors held 2,168,854 shares, or 8.11%, and Dimensional Fund Advisors held 1,415,376 shares, or 5.29%. Together those four own about 42.6% of the company. The directors, director nominees and executive officers as a group, 16 people, held 477,563 shares, or 1.78%.Todd Kelsey is president and chief executive officer. The company was founded in 1979 in Neenah by Peter Strandwitz, John Nussbaum and other entrepreneurs as a contract designer and builder of circuit boards. It grew from revenue of $24.5 million in 1987 to $396.8 million in 1998 and to $4.03 billion in fiscal 2025, which ended September 27, 2025.Today Plexus employs more than 20,000 people in 26 facilities covering about 5.0 million square feet in the Americas, Asia-Pacific and Europe, Middle East and Africa. About 58% of its employees are in Asia-Pacific, 30% in the Americas and 12% in Europe, the Middle East and Africa. It has about 190 customers, none above 10% of sales, and its ten largest customers made up 49.1% of fiscal 2025 sales.The company returns cash to shareholders through share repurchases. It bought back $65 million of stock in fiscal 2025 and another $20.6 million in the fiscal third quarter of 2026 at an average price of $258.75, and it has $21.4 million left on a $100 million authorization.
For customers, Plexus is a manufacturer owned by dispersed institutions, not by a founder or a larger corporate group. Its customers are companies in healthcare and life sciences, industrial and aerospace and defense markets that need regulated, low volume, high mix products built and supported over many years. Because no customer exceeds 10% of sales, Plexus is not dependent on one customer's fortunes, and customers can expect the company to price contracts for returns on capital, not for volume at any cost.For employees, the company is large and global, with more than 20,000 people. Most work in Asia-Pacific, where about 58% of the workforce is based and where fiscal 2025 revenue was $2.39 billion. Ownership by institutions focused on returns shapes management's priorities: in fiscal 2025 the company reported a return on invested capital of 14.6% against a weighted cost of capital of 8.9%, and it cut gross inventory by $82 million to reach its best cash conversion cycle in five years, 63 days.For investors, the stock has a small share count, with only about 26.65 million shares outstanding. BlackRock and Vanguard together own about 29%, and that makes the stock sensitive to flows in and out of index funds. Fiscal 2025 revenue of $4.03 billion grew 1.8%, but fiscal 2026 is on track for growth of more than 20%, with a record third quarter of $1.305 billion and fourth quarter guidance of $1.33 billion to $1.38 billion.At about $273 a share, the stock trades at roughly 44 times fiscal 2025 GAAP earnings of $6.26 per share and about 37 times non-GAAP earnings of $7.43. Management has set a goal of 9% to 12% revenue growth, so the valuation assumes continued momentum. Insiders own only 1.78%, so investors are relying on the board and management to allocate capital well, including through buybacks and any acquisitions.