Who owns Flex (FLEX)
Which tracked institutional funds hold FLEX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See FLEX company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 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
257 tracked funds added or opened FLEX while 133 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
FLEX’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.1pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in FLEX 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 869 tracked filers holding FLEX, 400 increased or opened the position and 376 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 FLEX 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 49
- VANGUARD PORTFOLIO MANAGEMENT LLC$1.3B
- VANGUARD CAPITAL MANAGEMENT LLC$1.1B
- VANGUARD FIDUCIARY TRUST CO$149M
- Squarepoint Ops LLC$67M
- VANGUARD ASSET MANAGEMENT, Ltd$42M
- JACOBS LEVY EQUITY MANAGEMENT, INC$20M
Full exits 51
- VANGUARD GROUP INC$2.3B
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$57M
- Capital International Investors$52M
- Qube Research & Technologies Ltd$49M
- Alyeska Investment Group, L.P.$30M
- LOGAN CAPITAL MANAGEMENT INC$27M
Largest adds
- WELLINGTON MANAGEMENT GROUP LLP$259M
- BNP PARIBAS ASSET MANAGEMENT Holding S.A.$156M
- Boston Partners$119M
- KBC Group NV$110M
- STATE STREET CORP$85M
- GEODE CAPITAL MANAGEMENT, LLC$83M
Largest trims
- BlackRock, Inc.$871M
- NORGES BANK$122M
- LSV ASSET MANAGEMENT$94M
- Junto Capital Management LP$52M
- Artisan Partners Limited Partnership$50M
- BANK OF NOVA SCOTIA$50M
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. added | 42,106,411 | $6.8B | 18.0% | 2026-Q2 |
| PRIMECAP MANAGEMENT CO/CA/ trimmed | 23,358,875 | $3.8B | 10.0% | 2026-Q2 |
| FMR LLC added | 19,538,636 | $3.2B | 8.4% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 17,978,332 | $2.9B | 7.7% | 2026-Q2 |
| STATE STREET CORP added | 16,984,384 | $2.8B | 7.3% | 2026-Q2 |
| JANUS HENDERSON GROUP PLC trimmed | 20,619,740 | $1.3B | 3.6% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 19,333,535 | $1.3B | 3.3% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 16,497,878 | $1.1B | 2.9% | 2026-Q1 |
| Invesco Ltd. trimmed | 5,973,649 | $968M | 2.6% | 2026-Q2 |
| Boston Partners added | 12,993,140 | $852M | 2.3% | 2026-Q1 |
| NORGES BANK trimmed | 5,005,183 | $811M | 2.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 8,308,577 | $543M | 1.4% | 2026-Q1 |
| LYRICAL ASSET MANAGEMENT LP trimmed | 6,960,981 | $456M | 1.2% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC trimmed | 5,923,097 | $388M | 1.0% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 2,365,800 | $383M | 1.0% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 5,584,305 | $365M | 1.0% | 2026-Q1 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 5,419,282 | $355M | 0.9% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 3,750,566 | $246M | 0.6% | 2026-Q1 |
| Polar Capital Holdings Plc trimmed | 3,610,561 | $236M | 0.6% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 1,386,824 | $225M | 0.6% | 2026-Q2 |
| Nuveen, LLC trimmed | 3,382,331 | $221M | 0.6% | 2026-Q1 |
| NORTHERN TRUST CORP added | 3,372,966 | $221M | 0.6% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 1,278,970 | $207M | 0.5% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 3,150,419 | $206M | 0.5% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 1,176,136 | $191M | 0.5% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 2,670,543 | $175M | 0.5% | 2026-Q1 |
| EARNEST PARTNERS LLC trimmed | 2,629,096 | $172M | 0.5% | 2026-Q1 |
| MORGAN STANLEY trimmed | 2,620,834 | $172M | 0.5% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 2,613,339 | $171M | 0.5% | 2026-Q1 |
| Third Point LLC new | 1,030,000 | $167M | 0.4% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 2,511,337 | $164M | 0.4% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 954,605 | $155M | 0.4% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO new | 2,283,054 | $149M | 0.4% | 2026-Q1 |
| SEI INVESTMENTS CO added | 2,230,622 | $146M | 0.4% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 2,223,180 | $146M | 0.4% | 2026-Q1 |
| UBS Group AG added | 2,052,990 | $134M | 0.4% | 2026-Q1 |
| LSV ASSET MANAGEMENT trimmed | 2,025,500 | $133M | 0.4% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 2,166,103 | $131M | 0.3% | 2026-Q1 |
| KBC Group NV added | 1,965,811 | $129M | 0.3% | 2026-Q1 |
| Legal & General Group Plc trimmed | 1,957,736 | $128M | 0.3% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 2,051,697 | $124M | 0.3% | 2026-Q1 |
| Amundi added | 1,494,418 | $98M | 0.3% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 1,441,506 | $94M | 0.2% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 537,319 | $87M | 0.2% | 2026-Q2 |
| Pacer Advisors, Inc. added | 1,351,801 | $87M | 0.2% | 2026-Q1 |
| Allianz Asset Management GmbH trimmed | 1,286,224 | $84M | 0.2% | 2026-Q1 |
| COOKSON PEIRCE & CO INC trimmed | 1,185,136 | $78M | 0.2% | 2026-Q1 |
| LPL Financial LLC trimmed | 1,169,894 | $77M | 0.2% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 1,147,880 | $75M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 1,085,250 | $71M | 0.2% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 1,078,891 | $71M | 0.2% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 1,078,754 | $71M | 0.2% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN added | 1,033,372 | $68M | 0.2% | 2026-Q1 |
| DekaBank Deutsche Girozentrale | 1,067,652 | $68M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 1,031,524 | $68M | 0.2% | 2026-Q1 |
| Squarepoint Ops LLC added | 1,017,160 | $67M | 0.2% | 2026-Q1 |
| Man Group plc added | 1,000,378 | $65M | 0.2% | 2026-Q1 |
| Park West Asset Management LLC added | 991,497 | $65M | 0.2% | 2026-Q1 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 935,032 | $61M | 0.2% | 2026-Q1 |
| SOUND SHORE MANAGEMENT INC /CT/ trimmed | 924,882 | $61M | 0.2% | 2026-Q1 |
| Capital World Investors added | 371,780 | $60M | 0.2% | 2026-Q2 |
| National Pension Service added | 917,792 | $60M | 0.2% | 2026-Q1 |
| BARCLAYS PLC trimmed | 874,835 | $57M | 0.2% | 2026-Q1 |
| Zurcher Kantonalbank (Zurich Cantonalbank) added | 828,398 | $54M | 0.1% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 820,557 | $54M | 0.1% | 2026-Q1 |
| Clear Harbor Asset Management, LLC trimmed | 820,449 | $54M | 0.1% | 2026-Q1 |
| California Public Employees Retirement System added | 817,340 | $54M | 0.1% | 2026-Q1 |
| Electron Capital Partners, LLC trimmed | 798,774 | $52M | 0.1% | 2026-Q1 |
| STOREBRAND ASSET MANAGEMENT AS added | 771,217 | $50M | 0.1% | 2026-Q1 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 769,008 | $50M | 0.1% | 2026-Q1 |
| BRANDES INVESTMENT PARTNERS, LP trimmed | 757,115 | $50M | 0.1% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 744,303 | $49M | 0.1% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 709,435 | $46M | 0.1% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC added | 683,821 | $45M | 0.1% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 634,054 | $42M | 0.1% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 620,871 | $41M | 0.1% | 2026-Q1 |
| PANAGORA ASSET MANAGEMENT INC added | 618,799 | $41M | 0.1% | 2026-Q1 |
| BECKER CAPITAL MANAGEMENT INC trimmed | 558,598 | $37M | 0.1% | 2026-Q1 |
| Artisan Partners Limited Partnership trimmed | 548,306 | $36M | 0.1% | 2026-Q1 |
| SG Americas Securities, LLC added | 532,373 | $35M | 0.1% | 2026-Q1 |
| Treasurer of the State of North Carolina added | 523,361 | $34M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 494,045 | $32M | 0.1% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 474,964 | $31M | 0.1% | 2026-Q1 |
| WORLDQUANT MILLENNIUM ADVISORS LLC added | 463,373 | $30M | 0.1% | 2026-Q1 |
| Retirement Systems of Alabama added | 450,748 | $30M | 0.1% | 2026-Q1 |
| HANCOCK WHITNEY CORP added | 322,509 | $30M | 0.1% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 447,985 | $29M | 0.1% | 2026-Q1 |
| PFA Pension, Forsikringsaktieselskab added | 443,564 | $29M | 0.1% | 2026-Q1 |
| Portolan Capital Management, LLC trimmed | 443,128 | $29M | 0.1% | 2026-Q1 |
| CITIGROUP INC trimmed | 432,503 | $28M | 0.1% | 2026-Q1 |
| LAZARD ASSET MANAGEMENT LLC added | 431,680 | $28M | 0.1% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed | 422,761 | $28M | 0.1% | 2026-Q1 |
| Blue Door Asset Management, LLC added | 420,350 | $28M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC added | 38,746,330 | $2.3B | 6.2% | 2025-Q4 stale |
| WESTFIELD CAPITAL MANAGEMENT CO LP trimmed | 2,873,012 | $95M | 0.3% | 2025-Q1 stale |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 947,295 | $57M | 0.2% | 2025-Q4 stale |
| Capital International Investors | 864,808 | $52M | 0.1% | 2025-Q4 stale |
| Qube Research & Technologies Ltd trimmed | 803,056 | $49M | 0.1% | 2025-Q4 stale |
| Cartenna Capital, LP new | 700,000 | $35M | 0.1% | 2025-Q2 stale |
| Alyeska Investment Group, L.P. trimmed | 495,550 | $30M | 0.1% | 2025-Q4 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.