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Institutional Ownership · SEC Form 13F

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. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

1,100
Institutional holders
364,337,250
Shares held (tracked funds)
99.6%
Of shares outstanding

How the tape is positioned

292 tracked funds added or opened FLEX while 137 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, VANGUARD GROUP INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.1pp gap the other way — the median holder sizes FLEX more heavily than its largest holder by dollar value does.

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, 456 increased or opened the position and 391 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 55

  • VANGUARD PORTFOLIO MANAGEMENT LLC$1.3B
  • VANGUARD CAPITAL MANAGEMENT LLC$1.1B
  • VANGUARD FIDUCIARY TRUST CO$151M
  • VANGUARD ASSET MANAGEMENT, Ltd$42M
  • Clearbridge Investments, LLC$19M
  • Holocene Advisors, LP$15M

Full exits 45

  • VANGUARD GROUP INC$2.3B
  • Capital International Investors$52M
  • Alyeska Investment Group, L.P.$30M
  • LOGAN CAPITAL MANAGEMENT INC$27M
  • Brandywine Global Investment Management, LLC$24M
  • Simcoe Capital Management, LLC$17M

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$88M
  • GEODE CAPITAL MANAGEMENT, LLC$85M

Largest trims

  • BlackRock, Inc.$855M
  • NORGES BANK$122M
  • LSV ASSET MANAGEMENT$94M
  • ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$58M
  • Junto Capital Management LP$52M
  • Artisan Partners Limited Partnership$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).

FundSharesReported value% of valueQuarter
BlackRock, Inc. trimmed32,985,339$2.2B12.9%2026-Q1
PRIMECAP MANAGEMENT CO/CA/ trimmed25,383,448$1.7B10.0%2026-Q1
JANUS HENDERSON GROUP PLC added20,619,740$1.3B8.1%2026-Q1
WELLINGTON MANAGEMENT GROUP LLP added20,238,286$1.3B7.9%2026-Q1
STATE STREET CORP added14,272,824$934M5.6%2026-Q1
Boston Partners added12,993,140$852M5.1%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC added8,308,577$543M3.3%2026-Q1
LYRICAL ASSET MANAGEMENT LP trimmed6,960,981$456M2.7%2026-Q1
VOYA INVESTMENT MANAGEMENT LLC trimmed5,923,097$388M2.3%2026-Q1
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed5,419,282$355M2.1%2026-Q1
Polar Capital Holdings Plc trimmed3,610,561$236M1.4%2026-Q1
NORGES BANK added5,984,086$198M1.2%2026-Q1
EARNEST PARTNERS LLC trimmed2,629,096$172M1.0%2026-Q1
MORGAN STANLEY added2,620,834$172M1.0%2026-Q1
BNP PARIBAS ASSET MANAGEMENT Holding S.A. added2,613,339$171M1.0%2026-Q1
SEI INVESTMENTS CO added2,230,622$146M0.9%2026-Q1
FRANKLIN RESOURCES INC added2,223,180$146M0.9%2026-Q1
KBC Group NV added1,965,811$129M0.8%2026-Q1
Amundi added1,494,418$98M0.6%2026-Q1
Pacer Advisors, Inc. added1,351,801$87M0.5%2026-Q1
Allianz Asset Management GmbH trimmed1,286,224$84M0.5%2026-Q1
COOKSON PEIRCE & CO INC trimmed1,185,136$78M0.5%2026-Q1
Swiss National Bank added1,085,250$71M0.4%2026-Q1
ENVESTNET ASSET MANAGEMENT INC added1,078,891$71M0.4%2026-Q1
BALYASNY ASSET MANAGEMENT L.P. added1,057,889$69M0.4%2026-Q1
DekaBank Deutsche Girozentrale added1,067,652$68M0.4%2026-Q1
Squarepoint Ops LLC added1,017,160$67M0.4%2026-Q1
Man Group plc added1,000,378$65M0.4%2026-Q1
Park West Asset Management LLC added991,497$65M0.4%2026-Q1
VOLORIDGE INVESTMENT MANAGEMENT, LLC added935,032$61M0.4%2026-Q1
SOUND SHORE MANAGEMENT INC /CT/ trimmed924,882$61M0.4%2026-Q1
National Pension Service added917,792$60M0.4%2026-Q1
Zurcher Kantonalbank (Zurich Cantonalbank) added828,398$54M0.3%2026-Q1
PRINCIPAL FINANCIAL GROUP INC added820,557$54M0.3%2026-Q1
Clear Harbor Asset Management, LLC trimmed820,449$54M0.3%2026-Q1
California Public Employees Retirement System added817,340$54M0.3%2026-Q1
Electron Capital Partners, LLC trimmed798,774$52M0.3%2026-Q1
STOREBRAND ASSET MANAGEMENT AS added771,217$50M0.3%2026-Q1
Sumitomo Mitsui Trust Group, Inc. trimmed769,008$50M0.3%2026-Q1
BRANDES INVESTMENT PARTNERS, LP trimmed757,115$50M0.3%2026-Q1
AQR CAPITAL MANAGEMENT LLC added704,098$46M0.3%2026-Q1
D. E. Shaw & Co., Inc. added689,426$45M0.3%2026-Q1
VICTORY CAPITAL MANAGEMENT INC added683,821$45M0.3%2026-Q1
RAYMOND JAMES FINANCIAL INC added620,871$41M0.2%2026-Q1
BECKER CAPITAL MANAGEMENT INC trimmed558,598$37M0.2%2026-Q1
Artisan Partners Limited Partnership trimmed548,306$36M0.2%2026-Q1
SG Americas Securities, LLC added532,373$35M0.2%2026-Q1
RENAISSANCE TECHNOLOGIES LLC added1,170,795$35M0.2%2026-Q1
Treasurer of the State of North Carolina added523,361$34M0.2%2026-Q1
WORLDQUANT MILLENNIUM ADVISORS LLC added463,373$30M0.2%2026-Q1
Retirement Systems of Alabama added450,748$30M0.2%2026-Q1
HANCOCK WHITNEY CORP added322,509$30M0.2%2026-Q1
JANE STREET GROUP, LLC added447,985$29M0.2%2026-Q1
PFA Pension, Forsikringsaktieselskab added443,564$29M0.2%2026-Q1
Portolan Capital Management, LLC trimmed443,128$29M0.2%2026-Q1
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed422,761$28M0.2%2026-Q1
Blue Door Asset Management, LLC added420,350$28M0.2%2026-Q1
Junto Capital Management LP trimmed415,149$27M0.2%2026-Q1
Oribel Capital Management, LP added414,200$27M0.2%2026-Q1
J. Safra Sarasin Holding AG added401,094$26M0.2%2026-Q1
GENDELL JEFFREY L trimmed400,000$26M0.2%2026-Q1
Mitsubishi UFJ Asset Management Co., Ltd. added399,056$26M0.2%2026-Q1
Robeco Institutional Asset Management B.V. added380,636$25M0.1%2026-Q1
FRONTIER CAPITAL MANAGEMENT CO LLC added361,586$24M0.1%2026-Q1
Aberdeen Group plc added354,608$23M0.1%2026-Q1
COZAD ASSET MANAGEMENT INC trimmed351,590$23M0.1%2026-Q1
Capital World Investors added350,788$23M0.1%2026-Q1
Crossmark Global Holdings, Inc. added346,216$23M0.1%2026-Q1
TWO SIGMA INVESTMENTS, LP added728,525$22M0.1%2026-Q1
NEW YORK STATE TEACHERS RETIREMENT SYSTEM trimmed314,624$21M0.1%2026-Q1
Vinva Investment Management Ltd added337,980$20M0.1%2026-Q1
Shannon River Fund Management LLC trimmed311,223$20M0.1%2026-Q1
BROWN ADVISORY INC added310,085$20M0.1%2026-Q1
Russell Investments Group, Ltd. added294,787$19M0.1%2026-Q1
Clearbridge Investments, LLC new289,423$19M0.1%2026-Q1
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM added274,516$18M0.1%2026-Q1
TOCQUEVILLE ASSET MANAGEMENT L.P. trimmed259,437$17M0.1%2026-Q1
Alight Capital Management LP added257,469$17M0.1%2026-Q1
UBS Group AG added565,375$17M0.1%2026-Q1
KADENSA CAPITAL Ltd trimmed249,984$16M0.1%2026-Q1
DIMENSIONAL FUND ADVISORS LP trimmed357,295$16M0.1%2026-Q1
Korea Investment CORP added233,483$15M0.1%2026-Q1
SORA INVESTORS LLC added233,197$15M0.1%2026-Q1
Trexquant Investment LP trimmed231,041$15M0.1%2026-Q1
Holocene Advisors, LP trimmed228,683$15M0.1%2026-Q1
Jefferies Financial Group Inc. added226,635$15M0.1%2026-Q1
FIRST TRUST ADVISORS LP added225,563$15M0.1%2026-Q1
Gradient Investments LLC added220,241$14M0.1%2026-Q1
VANGUARD GROUP INC added38,387,165$2.3B13.9%2025-Q4 stale
WESTFIELD CAPITAL MANAGEMENT CO LP trimmed2,873,012$95M0.6%2025-Q1 stale
Capital International Investors864,808$52M0.3%2025-Q4 stale
Cartenna Capital, LP trimmed700,000$35M0.2%2025-Q2 stale
Alyeska Investment Group, L.P. trimmed495,550$30M0.2%2025-Q4 stale
LOGAN CAPITAL MANAGEMENT INC added444,176$27M0.2%2025-Q4 stale
Brandywine Global Investment Management, LLC trimmed390,663$24M0.1%2025-Q4 stale
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added430,165$21M0.1%2025-Q2 stale
VAN ECK ASSOCIATES CORP added304,602$18M0.1%2025-Q3 stale
Simcoe Capital Management, LLC trimmed281,295$17M0.1%2025-Q4 stale
D. SCOTT NEAL, INC. added267,835$16M0.1%2025-Q3 stale
Merewether Investment Management, LP trimmed456,036$15M0.1%2025-Q1 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.

HoldersTotal shares

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.

Learn how to read institutional ownership