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-Q2 13F filings (latest filed 2026-09-22). 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 ZGN is one-sided between 2026-Q1 and 2026-Q2: 49 added or opened and 8 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
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 2026-Q1 and 2026-Q2, across 129 tracked filers holding ZGN, 74 increased or opened the position and 59 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 2026-Q1 and 2026-Q2 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 12
- Liontrust Investment Partners LLP$19M
- Hood River Capital Management LLC$16M
- CITADEL ADVISORS LLC$6M
- Informed Momentum Co LLC$5M
- Global IMC LLC$3M
- WELLINGTON MANAGEMENT GROUP LLP$2M
Full exits 4
- Amundi$11M
- EDMOND DE ROTHSCHILD HOLDING S.A.$4M
- Lombard Odier Asset Management (USA) Corp$1M
- ExodusPoint Capital Management, LP$672K
Largest adds
- Temasek Holdings (Private) Ltd$71M
- PRICE T ROWE ASSOCIATES INC /MD/$18M
- BARROW HANLEY MEWHINNEY & STRAUSS LLC$15M
- AMERICAN CENTURY COMPANIES INC$13M
- FEDERATED HERMES, INC.$10M
- Point72 Asset Management, L.P.$9M
Largest trims
- UBS Group AG$3M
- Squarepoint Ops LLC$2M
- TWO SIGMA INVESTMENTS, LP$1M
- LOS ANGELES CAPITAL MANAGEMENT LLC$405K
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Temasek Holdings (Private) Ltd | 27,242,276 | $355M | 37.6% | 2026-Q2 |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC added | 4,529,874 | $59M | 6.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 4,512,858 | $59M | 6.2% | 2026-Q2 |
| BlackRock, Inc. trimmed | 2,748,557 | $36M | 3.8% | 2026-Q2 |
| HARRIS ASSOCIATES L P trimmed | 2,435,700 | $32M | 3.4% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 2,301,830 | $30M | 3.2% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 2,285,256 | $30M | 3.2% | 2026-Q2 |
| Eurizon Capital SGR S.p.A. added | 2,178,653 | $28M | 3.0% | 2026-Q2 |
| Artisan Partners Limited Partnership trimmed | 1,689,307 | $22M | 2.3% | 2026-Q2 |
| Tabor Asset Management, LP added | 1,682,838 | $22M | 2.3% | 2026-Q2 |
| Liontrust Investment Partners LLP added | 1,443,157 | $19M | 2.0% | 2026-Q2 |
| Hood River Capital Management LLC new | 1,256,808 | $16M | 1.7% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 1,131,031 | $15M | 1.6% | 2026-Q2 |
| FEDERATED HERMES, INC. added | 1,055,514 | $14M | 1.5% | 2026-Q2 |
| UBS Group AG trimmed | 946,516 | $12M | 1.3% | 2026-Q2 |
| OSBORNE PARTNERS CAPITAL MANAGEMENT, LLC trimmed | 936,573 | $12M | 1.3% | 2026-Q2 |
| GAM Holding AG trimmed | 857,873 | $11M | 1.2% | 2026-Q2 |
| STATE STREET CORP trimmed | 850,384 | $11M | 1.2% | 2026-Q2 |
| Portolan Capital Management, LLC added | 753,948 | $10M | 1.0% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 737,841 | $10M | 1.0% | 2026-Q2 |
| Walleye Capital LLC added | 737,674 | $10M | 1.0% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 690,940 | $9M | 1.0% | 2026-Q2 |
| SEI INVESTMENTS CO added | 647,598 | $8M | 0.9% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 603,207 | $8M | 0.8% | 2026-Q2 |
| FIL Ltd added | 591,203 | $8M | 0.8% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 576,833 | $8M | 0.8% | 2026-Q2 |
| QVIDTVM Management LLC trimmed | 455,804 | $6M | 0.6% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 438,012 | $6M | 0.6% | 2026-Q2 |
| Nuveen, LLC added | 422,886 | $6M | 0.6% | 2026-Q2 |
| Informed Momentum Co LLC new | 380,869 | $5M | 0.5% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 349,692 | $5M | 0.5% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 347,309 | $4M | 0.5% | 2026-Q2 |
| OCCUDO QUANTITATIVE STRATEGIES LP added | 312,244 | $4M | 0.4% | 2026-Q2 |
| FIDEURAM - INTESA SANPAOLO PRIVATE BANKING S.P.A. trimmed | 290,599 | $4M | 0.4% | 2026-Q2 |
| MARSHALL WACE, LLP added | 276,123 | $4M | 0.4% | 2026-Q2 |
| Global IMC LLC new | 262,767 | $3M | 0.4% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 256,580 | $3M | 0.4% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 181,980 | $2M | 0.3% | 2026-Q2 |
| Creative Planning added | 162,695 | $2M | 0.2% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 157,583 | $2M | 0.2% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP new | 145,159 | $2M | 0.2% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC added | 121,079 | $2M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 119,583 | $2M | 0.2% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 111,560 | $1M | 0.2% | 2026-Q2 |
| POLEN CAPITAL MANAGEMENT LLC added | 111,273 | $1M | 0.2% | 2026-Q2 |
| CastleKnight Management LP | 109,200 | $1M | 0.2% | 2026-Q2 |
| MORGAN STANLEY trimmed | 105,859 | $1M | 0.1% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 101,457 | $1M | 0.1% | 2026-Q2 |
| DENALI ADVISORS LLC new | 100,600 | $1M | 0.1% | 2026-Q2 |
| Spectrum Strategic Capital Management, LLC trimmed | 94,751 | $1M | 0.1% | 2026-Q2 |
| RENAISSANCE GROUP LLC trimmed | 91,470 | $1M | 0.1% | 2026-Q2 |
| Numerai GP LLC added | 90,228 | $1M | 0.1% | 2026-Q2 |
| PDT Partners, LLC | 88,668 | $1M | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 86,332 | $1M | 0.1% | 2026-Q2 |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. added | 84,212 | $1M | 0.1% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 77,753 | $1M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 69,100 | $720K | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 62,906 | $819K | 0.1% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 57,632 | $750K | 0.1% | 2026-Q2 |
| STRS OHIO new | 55,400 | $721K | 0.1% | 2026-Q2 |
| MOORE CAPITAL MANAGEMENT, LP | 50,000 | $651K | 0.1% | 2026-Q2 |
| PRELUDE CAPITAL MANAGEMENT, LLC added | 46,319 | $603K | 0.1% | 2026-Q2 |
| Engineers Gate Manager LP trimmed | 46,152 | $601K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 45,487 | $592K | 0.1% | 2026-Q2 |
| Central Pacific Bank - Trust Division added | 43,302 | $564K | 0.1% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 43,238 | $563K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 41,771 | $544K | 0.1% | 2026-Q2 |
| ARMISTICE CAPITAL, LLC trimmed | 37,297 | $486K | 0.1% | 2026-Q2 |
| Bank Julius Baer & Co. Ltd, Zurich | 35,000 | $456K | 0.0% | 2026-Q2 |
| MetLife Investment Management, LLC trimmed | 33,096 | $431K | 0.0% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC new | 32,705 | $426K | 0.0% | 2026-Q2 |
| Graham Capital Management, L.P. trimmed | 31,868 | $415K | 0.0% | 2026-Q2 |
| Invesco Ltd. trimmed | 26,652 | $347K | 0.0% | 2026-Q2 |
| CITIGROUP INC added | 26,560 | $346K | 0.0% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 25,301 | $329K | 0.0% | 2026-Q2 |
| Weiss Asset Management LP new | 23,040 | $300K | 0.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 20,979 | $273K | 0.0% | 2026-Q2 |
| INTECH INVESTMENT MANAGEMENT LLC trimmed | 19,194 | $250K | 0.0% | 2026-Q2 |
| Jain Global LLC trimmed | 18,920 | $246K | 0.0% | 2026-Q2 |
| Next Capital Management LLC | 18,275 | $238K | 0.0% | 2026-Q2 |
| DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD. new | 18,000 | $234K | 0.0% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey | 17,323 | $226K | 0.0% | 2026-Q2 |
| Quantbot Technologies LP trimmed | 17,017 | $222K | 0.0% | 2026-Q2 |
| IQ EQ FUND MANAGEMENT (SINGAPORE) PRIVATE Ltd trimmed | 17,000 | $221K | 0.0% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 16,380 | $213K | 0.0% | 2026-Q2 |
| Vident Advisory, LLC trimmed | 15,490 | $202K | 0.0% | 2026-Q2 |
| Vanguard Personalized Indexing Management, LLC added | 14,348 | $187K | 0.0% | 2026-Q2 |
| Sterling Capital Management LLC added | 14,141 | $184K | 0.0% | 2026-Q2 |
| Savant Capital, LLC trimmed | 13,648 | $178K | 0.0% | 2026-Q2 |
| LANARK FINANCIAL, INC. added | 12,543 | $163K | 0.0% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP added | 12,273 | $161K | 0.0% | 2026-Q2 |
| State of Wyoming trimmed | 10,579 | $138K | 0.0% | 2026-Q2 |
| LOS ANGELES CAPITAL MANAGEMENT LLC trimmed | 10,090 | $131K | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 8,982 | $117K | 0.0% | 2026-Q2 |
| BARCLAYS PLC trimmed | 8,261 | $108K | 0.0% | 2026-Q2 |
| FMR LLC added | 7,949 | $103K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) added | 7,125 | $93K | 0.0% | 2026-Q2 |
| Parallel Advisors, LLC trimmed | 5,265 | $69K | 0.0% | 2026-Q2 |
| Legal & General Group Plc trimmed | 4,635 | $60K | 0.0% | 2026-Q2 |
| Ameritas Investment Partners, Inc. trimmed | 4,152 | $54K | 0.0% | 2026-Q2 |
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.