Who owns PLXS (PLXS)
Which tracked institutional funds hold PLXS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See PLXS company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on PLXS is one-sided between 2025-Q4 and 2026-Q1: 174 added or opened and 40 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
PLXS’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes PLXS more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in PLXS divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 379 tracked filers holding PLXS, 202 increased or opened the position and 176 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in PLXS between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 35
- VANGUARD PORTFOLIO MANAGEMENT LLC$457M
- VANGUARD CAPITAL MANAGEMENT LLC$243M
- VANGUARD FIDUCIARY TRUST CO$38M
- EMERALD ADVISERS, LLC$34M
- Cartenna Capital, LP$23M
- EMERALD MUTUAL FUND ADVISERS TRUST$21M
Full exits 16
- VANGUARD GROUP INC$528M
- FIDUCIARY MANAGEMENT INC /WI/$190M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$21M
- HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC$7M
- Alyeska Investment Group, L.P.$2M
- COMERICA BANK$2M
Largest adds
- BlackRock, Inc.$126M
- AMERICAN CENTURY COMPANIES INC$87M
- ALLIANCEBERNSTEIN L.P.$84M
- WESTFIELD CAPITAL MANAGEMENT CO LP$77M
- DISCIPLINED GROWTH INVESTORS INC /MN$69M
- STATE STREET CORP$61M
Largest trims
- UBS Group AG$11M
- DARK FOREST CAPITAL MANAGEMENT LP$5M
- BARCLAYS PLC$5M
- Qube Research & Technologies Ltd$4M
- Concentric Capital Strategies, LP$3M
- JPMORGAN CHASE & CO$3M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 3,756,747 | $761M | 13.1% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 2,254,757 | $457M | 7.9% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 1,562,431 | $316M | 5.4% | 2026-Q1 |
| DISCIPLINED GROWTH INVESTORS INC /MN trimmed | 1,494,619 | $303M | 5.2% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,198,201 | $243M | 4.2% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 1,119,371 | $227M | 3.9% | 2026-Q1 |
| STATE STREET CORP added | 1,047,835 | $212M | 3.7% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. trimmed | 916,755 | $186M | 3.2% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 680,032 | $138M | 2.4% | 2026-Q1 |
| EARNEST PARTNERS LLC trimmed | 652,438 | $132M | 2.3% | 2026-Q1 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 588,778 | $119M | 2.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 629,785 | $93M | 1.6% | 2026-Q1 |
| MORGAN STANLEY trimmed | 427,937 | $87M | 1.5% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC added | 413,630 | $84M | 1.4% | 2026-Q1 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 390,045 | $79M | 1.4% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 386,104 | $78M | 1.3% | 2026-Q1 |
| WESTFIELD CAPITAL MANAGEMENT CO LP added | 384,493 | $78M | 1.3% | 2026-Q1 |
| Nuveen, LLC trimmed | 362,493 | $73M | 1.3% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 316,646 | $64M | 1.1% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 305,654 | $62M | 1.1% | 2026-Q1 |
| Boston Trust Walden Corp trimmed | 296,479 | $60M | 1.0% | 2026-Q1 |
| Thrivent Financial for Lutherans trimmed | 292,743 | $59M | 1.0% | 2026-Q1 |
| Invesco Ltd. added | 244,809 | $50M | 0.9% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 190,301 | $39M | 0.7% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 185,741 | $38M | 0.6% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 180,660 | $37M | 0.6% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 175,832 | $36M | 0.6% | 2026-Q1 |
| EMERALD ADVISERS, LLC new | 166,532 | $34M | 0.6% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 163,947 | $33M | 0.6% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. added | 154,999 | $31M | 0.5% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 153,392 | $31M | 0.5% | 2026-Q1 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 147,822 | $30M | 0.5% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 151,836 | $29M | 0.5% | 2026-Q1 |
| FMR LLC added | 132,141 | $27M | 0.5% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 126,580 | $26M | 0.4% | 2026-Q1 |
| Cartenna Capital, LP new | 115,000 | $23M | 0.4% | 2026-Q1 |
| UBS Group AG trimmed | 111,768 | $23M | 0.4% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 110,759 | $22M | 0.4% | 2026-Q1 |
| MetLife Investment Management, LLC trimmed | 102,687 | $21M | 0.4% | 2026-Q1 |
| EMERALD MUTUAL FUND ADVISERS TRUST new | 102,278 | $21M | 0.4% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 99,668 | $20M | 0.3% | 2026-Q1 |
| Public Sector Pension Investment Board added | 95,861 | $19M | 0.3% | 2026-Q1 |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO added | 92,059 | $19M | 0.3% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 85,474 | $17M | 0.3% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. new | 83,424 | $17M | 0.3% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 83,178 | $17M | 0.3% | 2026-Q1 |
| PANAGORA ASSET MANAGEMENT INC added | 82,809 | $17M | 0.3% | 2026-Q1 |
| GHP Investment Advisors, Inc. trimmed | 79,791 | $16M | 0.3% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 79,208 | $16M | 0.3% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 78,823 | $16M | 0.3% | 2026-Q1 |
| SG Capital Management LLC added | 78,255 | $16M | 0.3% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 77,048 | $16M | 0.3% | 2026-Q1 |
| KENNEDY CAPITAL MANAGEMENT LLC trimmed | 76,605 | $16M | 0.3% | 2026-Q1 |
| AXIOM INVESTORS LLC /DE new | 75,956 | $15M | 0.3% | 2026-Q1 |
| PALISADE CAPITAL MANAGEMENT, LP added | 75,468 | $15M | 0.3% | 2026-Q1 |
| CITIGROUP INC added | 73,911 | $15M | 0.3% | 2026-Q1 |
| First Eagle Investment Management, LLC added | 67,541 | $14M | 0.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 65,319 | $13M | 0.2% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 63,489 | $13M | 0.2% | 2026-Q1 |
| NORGES BANK added | 94,290 | $12M | 0.2% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 54,822 | $11M | 0.2% | 2026-Q1 |
| Swiss National Bank trimmed | 53,000 | $11M | 0.2% | 2026-Q1 |
| SORA INVESTORS LLC new | 50,409 | $10M | 0.2% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 49,065 | $10M | 0.2% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 47,919 | $10M | 0.2% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 46,680 | $9M | 0.2% | 2026-Q1 |
| Clark Capital Management Group, Inc. trimmed | 46,115 | $9M | 0.2% | 2026-Q1 |
| MAIRS & POWER INC | 45,868 | $9M | 0.2% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 45,829 | $9M | 0.2% | 2026-Q1 |
| Waverly Advisors, LLC added | 43,407 | $9M | 0.2% | 2026-Q1 |
| Hillsdale Investment Management Inc. trimmed | 43,325 | $9M | 0.2% | 2026-Q1 |
| TEACHER RETIREMENT SYSTEM OF TEXAS trimmed | 41,761 | $8M | 0.1% | 2026-Q1 |
| Creative Planning added | 41,748 | $8M | 0.1% | 2026-Q1 |
| Russell Investments Group, Ltd. trimmed | 40,827 | $8M | 0.1% | 2026-Q1 |
| Polar Asset Management Partners Inc. new | 40,264 | $8M | 0.1% | 2026-Q1 |
| LAZARD ASSET MANAGEMENT LLC trimmed | 40,040 | $8M | 0.1% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 39,135 | $8M | 0.1% | 2026-Q1 |
| Homestead Advisers Corp trimmed | 36,800 | $7M | 0.1% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC added | 36,257 | $7M | 0.1% | 2026-Q1 |
| Jefferies Financial Group Inc. added | 36,126 | $7M | 0.1% | 2026-Q1 |
| LMR Partners LLP new | 35,385 | $7M | 0.1% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 35,123 | $7M | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO added | 35,106 | $7M | 0.1% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 34,893 | $7M | 0.1% | 2026-Q1 |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM trimmed | 34,088 | $7M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 31,393 | $6M | 0.1% | 2026-Q1 |
| MARTINGALE ASSET MANAGEMENT L P trimmed | 31,362 | $6M | 0.1% | 2026-Q1 |
| Amundi added | 31,294 | $6M | 0.1% | 2026-Q1 |
| NICOLA WEALTH MANAGEMENT LTD. trimmed | 29,000 | $6M | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 26,456 | $5M | 0.1% | 2026-Q1 |
| LEUTHOLD GROUP, LLC added | 26,422 | $5M | 0.1% | 2026-Q1 |
| CASTLEARK MANAGEMENT LLC new | 24,680 | $5M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 3,595,195 | $528M | 9.1% | 2025-Q4 stale |
| FIDUCIARY MANAGEMENT INC /WI/ trimmed | 1,290,446 | $190M | 3.3% | 2025-Q4 stale |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 141,267 | $21M | 0.4% | 2025-Q4 stale |
| Pacer Advisors, Inc. trimmed | 81,311 | $12M | 0.2% | 2025-Q3 stale |
| Point72 Asset Management, L.P. added | 65,614 | $9M | 0.2% | 2025-Q3 stale |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC trimmed | 45,851 | $7M | 0.1% | 2025-Q4 stale |
| Edgestream Partners, L.P. trimmed | 37,606 | $5M | 0.1% | 2025-Q3 stale |
| ALGERT GLOBAL LLC added | 37,396 | $5M | 0.1% | 2025-Q3 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.