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PLXS · Plexus Corp · Holdings

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$218.64 -2.14 (-0.97%)
Market Cap
$5.88B
Shares
26.65M
Volume · Oct 23 36.87K Avg daily vol (3M) 263.37K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 465
Total Value: $8,111,120,451
Total Shares: 27,061,558
Showing 1–100 of 474 holdings by value · page 1 of 5

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 450 13F filers
Top Holder
16.2%
Sep 2023 → Jun 2026 · range 15.9% – 17.5%
of institutional value
Top 5
38.4%
Sep 2023 → Jun 2026 · range 38.4% – 51.0%
of institutional value
Top 10
54.1%
Sep 2023 → Jun 2026 · range 54.1% – 67.4%
of institutional value
HHI
486
Sep 2023 → Jun 2026 · range 486 – 711
Broadly held

Who Holds PLXS

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 448 filers, like-for-like change -0.4%; actively managed books -1.9%; index-like books +2.3%.

Holder type Share Filers Change
Registered adviser 50.2% 247 -1.2%
Exempt adviser 0.5% 3 +13.7%
Adviser 2.3% 10 -0.1%
Bank 9.7% 20 +13.6%
Insurer 0.7% 3 +1.6%
Broker-dealer 0.0% 2 +53.5%
Benefit plan 0.4% 7 -20.1%
Non-US 3.5% 11 -15.1%
Holding company 19.7% 12 +2.8%
Unknown 12.8% 133 -6.5%

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 3 holders with no observed 2026-03-31 13F and 2 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.

Conviction and Crowding

448 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
1
0.223% of filers hold it in their top 10
Mar 31, 2026: 1
Holders above 5%
1
median weight 0.008%
Mar 31, 2026: 1
Crowding
29.2%
of shares outstanding, 80th percentile
Private-fund advisers
27.4%
of shares outstanding
Institutional ownership
99.9%
101.5% of the estimated free float above 100%: filers can report lent or client shares more than once
Top 10 holders
54.3%
of 13F shares, Herfindahl 0.049
Active holders
-1.9%
like-for-like share change of active filers
5% stakes on record
4
0 13D, 4 13G (4 institutional, 0 passive, 0 exempt)
How long holders have held it value-weighted 16.0 quarters
Under 1 year 21.4% 1 to 3 years 23.8% 3 years or more 54.9% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost
$172.27
estimated per share
Mar 31, 2026: $146.98
Quarter-end price
$300.63
implied by 13F values
Estimated gain or loss
+74.5%
price against the estimated cost
Estimated at a loss
0.000%
of costed 13F value

Estimated cost covers 20.9% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies PLXS's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 BHE Benchmark Electronics Inc 7
2 KLIC Kulicke & Soffa Industries Inc 10
3 AIT Applied Industrial Technologies Inc 12
4 AIR Aar Corp 10
5 DGII Digi International Inc 6
6 SMTC Semtech Corp 13
7 MXL Maxlinear, Inc 9
8 OPLN OPENLANE, Inc. 7
9 ACLS Axcelis Technologies Inc 8
10 QTWO Q2 Holdings, Inc. 5

Shareholder Targets

13F filers that own its peers but not PLXS, quarter ended Jun 30, 2026

Found through its holder-overlap peers: BHE, KLIC, AIT, AIR, DGII, SMTC, MXL, OPLN, ACLS, QTWO, VSEC, PRLB, OII, FTDR, POWI, LMAT, FORM, BJRI, VSAT, COHU. 1,203 filers in all.

# Filer In peers
1 Capital Research Global Investors Adviser, Diversified active $1,167,200,495 6 held
2 Capital World Investors Adviser, Diversified active $616,556,357 5 held
3 Boston Partners Registered adviser, Diversified active $518,638,263 3 held
4 Capital International Investors Adviser, Diversified active $501,939,980 6 held
5 CARRONADE CAPITAL MANAGEMENT, LP Registered adviser, Concentrated $484,971,844 1 held
6 REINHART PARTNERS, LLC. Registered adviser, Diversified active $475,738,064 4 held
7 Point72 Asset Management, L.P. Registered adviser, Systematic-like $462,146,812 10 held
8 Hood River Capital Management LLC Registered adviser, Diversified active $440,137,588 3 held
9 PRIMECAP MANAGEMENT CO/CA/ Registered adviser, Diversified active $418,991,694 4 held
10 FEDERATED HERMES, INC. Adviser, Diversified active $382,848,655 16 held

Fund Ownership of PLXS by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 31.50% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 5.03% 1,340,708
Index ETFs 26.47% 7,054,259
Active ETFs 2.03% 539,708
Active funds 20.18% 5,378,808
Unclassified 2.99% 797,093
All registered funds 56.70% 15,110,576
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Showing 100 of 474
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Holder Value (USD) % of 13F Shares Open

Showing the top 100 of 474 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 785786 CUSIP 729132100 13F (30d) 83 filings 82 filers Visit website Investor relations