Who owns ZGN
Which tracked institutional funds hold ZGN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ZGN 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
27 tracked funds added or opened ZGN while 20 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
ZGN’s largest tracked holder by dollar value, Temasek Holdings (Private) Ltd, sizes it at 1.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ZGN 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 123 tracked filers holding ZGN, 63 increased or opened the position and 66 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
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 ZGN 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 7
- Eurizon Capital SGR S.p.A.$21M
- Amundi$11M
- VANGUARD PORTFOLIO MANAGEMENT LLC$4M
- Squarepoint Ops LLC$3M
- Lombard Odier Asset Management (USA) Corp$1M
- ExodusPoint Capital Management, LP$672K
Full exits 8
- GAM Holding AG$7M
- VANGUARD GROUP INC$4M
- TWO SIGMA ADVISERS, LP$2M
- MATAURO, LLC$2M
- RFG Advisory, LLC$1M
- CITADEL ADVISORS LLC$968K
Largest adds
- Point72 Asset Management, L.P.$19M
- Walleye Capital LLC$7M
- UBS Group AG$6M
- AMERICAN CENTURY COMPANIES INC$6M
- BANK OF AMERICA CORP /DE/$5M
- Temasek Holdings (Private) Ltd$5M
Largest trims
- MILLENNIUM MANAGEMENT LLC$12M
- FIL Ltd$7M
- HARRIS ASSOCIATES L P$3M
- BARCLAYS PLC$868K
- PDT Partners, LLC$845K
- TWO SIGMA INVESTMENTS, LP$838K
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 |
|---|---|---|---|---|
| Temasek Holdings (Private) Ltd | 27,242,276 | $284M | 37.3% | 2026-Q1 |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC added | 4,197,254 | $44M | 5.7% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 3,956,110 | $41M | 5.4% | 2026-Q1 |
| BlackRock, Inc. trimmed | 3,221,222 | $34M | 4.4% | 2026-Q1 |
| HARRIS ASSOCIATES L P trimmed | 2,911,800 | $30M | 4.0% | 2026-Q1 |
| Eurizon Capital SGR S.p.A. new | 2,010,144 | $21M | 2.8% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 1,977,316 | $21M | 2.7% | 2026-Q1 |
| Artisan Partners Limited Partnership trimmed | 1,840,151 | $19M | 2.5% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 1,572,898 | $16M | 2.2% | 2026-Q1 |
| UBS Group AG added | 1,444,079 | $15M | 2.0% | 2026-Q1 |
| Tabor Asset Management, LP added | 1,438,546 | $15M | 2.0% | 2026-Q1 |
| Amundi added | 1,025,494 | $11M | 1.4% | 2026-Q1 |
| STATE STREET CORP added | 976,677 | $10M | 1.3% | 2026-Q1 |
| OSBORNE PARTNERS CAPITAL MANAGEMENT, LLC added | 942,458 | $10M | 1.3% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 731,465 | $8M | 1.0% | 2026-Q1 |
| Portolan Capital Management, LLC added | 710,626 | $7M | 1.0% | 2026-Q1 |
| Walleye Capital LLC added | 665,851 | $7M | 0.9% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 583,360 | $6M | 0.8% | 2026-Q1 |
| FIL Ltd trimmed | 571,696 | $6M | 0.8% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 554,633 | $6M | 0.8% | 2026-Q1 |
| QVIDTVM Management LLC added | 525,893 | $5M | 0.7% | 2026-Q1 |
| SEI INVESTMENTS CO trimmed | 392,213 | $4M | 0.5% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 365,113 | $4M | 0.5% | 2026-Q1 |
| EDMOND DE ROTHSCHILD HOLDING S.A. | 360,000 | $4M | 0.5% | 2026-Q1 |
| FIDEURAM - INTESA SANPAOLO PRIVATE BANKING S.P.A. added | 354,608 | $4M | 0.5% | 2026-Q1 |
| NORTHERN TRUST CORP added | 327,744 | $3M | 0.4% | 2026-Q1 |
| FEDERATED HERMES, INC. added | 323,370 | $3M | 0.4% | 2026-Q1 |
| Squarepoint Ops LLC added | 270,008 | $3M | 0.4% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 247,251 | $3M | 0.3% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 176,632 | $2M | 0.2% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 150,599 | $2M | 0.2% | 2026-Q1 |
| MORGAN STANLEY trimmed | 141,985 | $1M | 0.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 134,116 | $1M | 0.2% | 2026-Q1 |
| Creative Planning added | 121,338 | $1M | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 118,360 | $1M | 0.2% | 2026-Q1 |
| Lombard Odier Asset Management (USA) Corp added | 115,000 | $1M | 0.2% | 2026-Q1 |
| Spectrum Strategic Capital Management, LLC added | 114,322 | $1M | 0.2% | 2026-Q1 |
| CastleKnight Management LP trimmed | 109,200 | $1M | 0.1% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 108,213 | $1M | 0.1% | 2026-Q1 |
| RENAISSANCE GROUP LLC trimmed | 92,625 | $965K | 0.1% | 2026-Q1 |
| PDT Partners, LLC trimmed | 88,668 | $924K | 0.1% | 2026-Q1 |
| Nuveen, LLC | 86,679 | $903K | 0.1% | 2026-Q1 |
| OCCUDO QUANTITATIVE STRATEGIES LP trimmed | 73,924 | $896K | 0.1% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 68,993 | $719K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 67,962 | $708K | 0.1% | 2026-Q1 |
| ExodusPoint Capital Management, LP trimmed | 64,534 | $672K | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 63,633 | $663K | 0.1% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 53,664 | $559K | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. | 53,700 | $550K | 0.1% | 2026-Q1 |
| LOS ANGELES CAPITAL MANAGEMENT LLC added | 51,440 | $536K | 0.1% | 2026-Q1 |
| MOORE CAPITAL MANAGEMENT, LP | 50,000 | $521K | 0.1% | 2026-Q1 |
| Numerai GP LLC new | 47,882 | $499K | 0.1% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC added | 44,754 | $466K | 0.1% | 2026-Q1 |
| HRT FINANCIAL LP trimmed | 41,721 | $434K | 0.1% | 2026-Q1 |
| Invesco Ltd. trimmed | 40,188 | $419K | 0.1% | 2026-Q1 |
| MetLife Investment Management, LLC | 37,948 | $395K | 0.1% | 2026-Q1 |
| Bank Julius Baer & Co. Ltd, Zurich | 35,000 | $365K | 0.0% | 2026-Q1 |
| Central Pacific Bank - Trust Division added | 33,810 | $352K | 0.0% | 2026-Q1 |
| SG Americas Securities, LLC trimmed | 32,423 | $338K | 0.0% | 2026-Q1 |
| Handelsbanken Fonder AB | 31,000 | $323K | 0.0% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 29,409 | $306K | 0.0% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 28,961 | $302K | 0.0% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 26,563 | $277K | 0.0% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 25,527 | $251K | 0.0% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 22,435 | $234K | 0.0% | 2026-Q1 |
| INTECH INVESTMENT MANAGEMENT LLC trimmed | 21,054 | $219K | 0.0% | 2026-Q1 |
| Centiva Capital, LP trimmed | 19,638 | $205K | 0.0% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC trimmed | 18,642 | $194K | 0.0% | 2026-Q1 |
| PUBLIC INVESTMENT FUND | 5,834,324 | $43M | 5.7% | 2025-Q1 stale |
| Ceredex Value Advisors LLC trimmed | 866,000 | $7M | 1.0% | 2025-Q2 stale |
| Alpine Investment Management Ltd trimmed | 850,000 | $7M | 1.0% | 2025-Q2 stale |
| GAM Holding AG | 706,936 | $7M | 1.0% | 2025-Q4 stale |
| VANGUARD GROUP INC added | 417,317 | $4M | 0.6% | 2025-Q4 stale |
| Cubist Systematic Strategies, LLC added | 419,379 | $3M | 0.4% | 2025-Q1 stale |
| TWO SIGMA ADVISERS, LP trimmed | 234,200 | $2M | 0.3% | 2025-Q4 stale |
| MATAURO, LLC new | 204,757 | $2M | 0.3% | 2025-Q4 stale |
| TUDOR INVESTMENT CORP ET AL added | 195,416 | $1M | 0.2% | 2025-Q1 stale |
| Trexquant Investment LP new | 166,131 | $1M | 0.2% | 2025-Q2 stale |
| RFG Advisory, LLC new | 113,647 | $1M | 0.2% | 2025-Q4 stale |
| Graham Capital Management, L.P. added | 142,049 | $1M | 0.1% | 2025-Q1 stale |
| CITADEL ADVISORS LLC trimmed | 94,431 | $968K | 0.1% | 2025-Q4 stale |
| Atom Investors LP new | 78,577 | $743K | 0.1% | 2025-Q3 stale |
| JANE STREET GROUP, LLC added | 58,732 | $602K | 0.1% | 2025-Q4 stale |
| Verition Fund Management LLC trimmed | 56,914 | $583K | 0.1% | 2025-Q4 stale |
| Engineers Gate Manager LP added | 60,653 | $573K | 0.1% | 2025-Q3 stale |
| Bridgewater Associates, LP added | 76,042 | $563K | 0.1% | 2025-Q1 stale |
| Jump Financial, LLC trimmed | 66,470 | $492K | 0.1% | 2025-Q1 stale |
| MIRABELLA FINANCIAL SERVICES LLP added | 46,635 | $478K | 0.1% | 2025-Q4 stale |
| Corient Private Wealth LLC new | 52,500 | $449K | 0.1% | 2025-Q2 stale |
| POLEN CAPITAL MANAGEMENT LLC new | 42,768 | $438K | 0.1% | 2025-Q4 stale |
| Nebula Research & Development LLC added | 55,520 | $411K | 0.1% | 2025-Q1 stale |
| Quantbot Technologies LP trimmed | 35,207 | $361K | 0.0% | 2025-Q4 stale |
| Jain Global LLC new | 31,800 | $301K | 0.0% | 2025-Q3 stale |
| Gordian Capital Singapore Pte Ltd new | 29,000 | $297K | 0.0% | 2025-Q4 stale |
| Orion Porfolio Solutions, LLC added | 25,223 | $259K | 0.0% | 2025-Q4 stale |
| Olympiad Research LP new | 33,228 | $246K | 0.0% | 2025-Q1 stale |
| GSA CAPITAL PARTNERS LLP trimmed | 23,778 | $225K | 0.0% | 2025-Q3 stale |
| TOCQUEVILLE ASSET MANAGEMENT L.P. trimmed | 25,850 | $221K | 0.0% | 2025-Q2 stale |
| Dynamic Technology Lab Private Ltd trimmed | 19,655 | $201K | 0.0% | 2025-Q4 stale |
| PRELUDE CAPITAL MANAGEMENT, LLC added | 26,582 | $197K | 0.0% | 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.
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.