Who owns Ziff Davis, Inc. (ZD)
Which tracked institutional funds hold ZD, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ZD company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-26). 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
85 tracked funds added or opened ZD while 47 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
ZD’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 ZD more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in ZD 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 274 tracked filers holding ZD, 126 increased or opened the position and 165 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 ZD 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 21
- VANGUARD PORTFOLIO MANAGEMENT LLC$95M
- VANGUARD CAPITAL MANAGEMENT LLC$71M
- Varde Management, L.P.$22M
- BALYASNY ASSET MANAGEMENT L.P.$22M
- VANGUARD FIDUCIARY TRUST CO$11M
- MONIMUS CAPITAL MANAGEMENT, LP$10M
Full exits 19
- VANGUARD GROUP INC$144M
- ArrowMark Colorado Holdings LLC$48M
- FULLER & THALER ASSET MANAGEMENT, INC.$30M
- Bridgewater Associates, LP$9M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$8M
- JANE STREET GROUP, LLC$5M
Largest adds
- Pale Fire Capital SE$74M
- FIRST TRUST ADVISORS LP$37M
- JANUS HENDERSON GROUP PLC$23M
- DIMENSIONAL FUND ADVISORS LP$13M
- STATE STREET CORP$10M
- Allianz Asset Management GmbH$8M
Largest trims
- BlackRock, Inc.$39M
- CDAM (UK) Ltd$24M
- Incline Global Management LLC$12M
- Invenomic Capital Management LP$9M
- FORT WASHINGTON INVESTMENT ADVISORS INC /OH/$6M
- PRUDENTIAL FINANCIAL INC$4M
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 | 4,247,300 | $178M | 9.1% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC trimmed | 3,418,252 | $143M | 7.3% | 2026-Q1 |
| Pale Fire Capital SE added | 2,783,366 | $117M | 6.0% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 2,263,308 | $95M | 4.9% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 2,071,548 | $87M | 4.4% | 2026-Q1 |
| Legal & General Group Plc trimmed | 1,976,537 | $83M | 4.2% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,696,929 | $71M | 3.6% | 2026-Q1 |
| STATE STREET CORP trimmed | 1,680,669 | $71M | 3.6% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 1,006,167 | $42M | 2.2% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 974,591 | $41M | 2.1% | 2026-Q1 |
| LSV ASSET MANAGEMENT added | 933,421 | $39M | 2.0% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 840,816 | $35M | 1.8% | 2026-Q1 |
| RICE HALL JAMES & ASSOCIATES, LLC added | 799,818 | $34M | 1.7% | 2026-Q1 |
| Nuveen, LLC trimmed | 771,782 | $32M | 1.7% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 675,898 | $28M | 1.4% | 2026-Q1 |
| MORGAN STANLEY trimmed | 611,745 | $26M | 1.3% | 2026-Q1 |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 595,017 | $25M | 1.3% | 2026-Q1 |
| CDAM (UK) Ltd trimmed | 563,667 | $24M | 1.2% | 2026-Q1 |
| Varde Management, L.P. new | 534,028 | $22M | 1.1% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 529,226 | $22M | 1.1% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 22,500,000 | $22M | 1.1% | 2026-Q1 |
| NORTHERN TRUST CORP added | 484,833 | $20M | 1.0% | 2026-Q1 |
| BRAVE ASSET MANAGEMENT INC added | 470,282 | $20M | 1.0% | 2026-Q1 |
| CastleKnight Management LP added | 422,474 | $18M | 0.9% | 2026-Q1 |
| Allianz Asset Management GmbH added | 405,625 | $17M | 0.9% | 2026-Q1 |
| Invesco Ltd. added | 361,198 | $15M | 0.8% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 320,275 | $13M | 0.7% | 2026-Q1 |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ trimmed | 312,840 | $13M | 0.7% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 307,188 | $13M | 0.7% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 301,529 | $13M | 0.6% | 2026-Q1 |
| GLENMEDE TRUST CO NA trimmed | 292,788 | $12M | 0.6% | 2026-Q1 |
| Pacer Advisors, Inc. added | 288,785 | $12M | 0.6% | 2026-Q1 |
| Invenomic Capital Management LP trimmed | 260,392 | $11M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 255,366 | $11M | 0.5% | 2026-Q1 |
| MONIMUS CAPITAL MANAGEMENT, LP new | 241,918 | $10M | 0.5% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 237,743 | $10M | 0.5% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 234,537 | $10M | 0.5% | 2026-Q1 |
| TOCQUEVILLE ASSET MANAGEMENT L.P. added | 219,207 | $9M | 0.5% | 2026-Q1 |
| Cambria Investment Management, L.P. trimmed | 217,851 | $9M | 0.5% | 2026-Q1 |
| UBS Group AG trimmed | 206,489 | $9M | 0.4% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 198,794 | $8M | 0.4% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 171,644 | $7M | 0.4% | 2026-Q1 |
| BESSEMER GROUP INC added | 169,177 | $7M | 0.4% | 2026-Q1 |
| Empowered Funds, LLC trimmed | 155,824 | $7M | 0.3% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 149,417 | $6M | 0.3% | 2026-Q1 |
| Public Sector Pension Investment Board added | 141,301 | $6M | 0.3% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 130,983 | $5M | 0.3% | 2026-Q1 |
| Amundi added | 119,364 | $5M | 0.3% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 118,280 | $5M | 0.3% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 115,155 | $5M | 0.2% | 2026-Q1 |
| Creative Planning added | 109,757 | $5M | 0.2% | 2026-Q1 |
| CORBYN INVESTMENT MANAGEMENT INC/MD trimmed | 92,341 | $4M | 0.2% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 91,218 | $4M | 0.2% | 2026-Q1 |
| Edgestream Partners, L.P. added | 83,140 | $3M | 0.2% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 81,063 | $3M | 0.2% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 78,680 | $3M | 0.2% | 2026-Q1 |
| Ewing Morris & Co. Investment Partners Ltd. added | 78,643 | $3M | 0.2% | 2026-Q1 |
| Swiss National Bank trimmed | 78,131 | $3M | 0.2% | 2026-Q1 |
| ACR Alpine Capital Research, LLC new | 72,680 | $3M | 0.2% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 72,480 | $3M | 0.2% | 2026-Q1 |
| CLARK ESTATES INC/NY | 69,700 | $3M | 0.1% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 68,840 | $3M | 0.1% | 2026-Q1 |
| XTX Topco Ltd trimmed | 68,163 | $3M | 0.1% | 2026-Q1 |
| Miller Value Partners, LLC added | 68,058 | $3M | 0.1% | 2026-Q1 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC added | 63,867 | $3M | 0.1% | 2026-Q1 |
| GREAT LAKES ADVISORS, LLC added | 58,887 | $2M | 0.1% | 2026-Q1 |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd trimmed | 58,315 | $2M | 0.1% | 2026-Q1 |
| WEDGE CAPITAL MANAGEMENT L L P/NC trimmed | 58,059 | $2M | 0.1% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 56,740 | $2M | 0.1% | 2026-Q1 |
| Susquehanna Portfolio Strategies, LLC trimmed | 55,361 | $2M | 0.1% | 2026-Q1 |
| HUSSMAN STRATEGIC ADVISORS, INC. added | 52,500 | $2M | 0.1% | 2026-Q1 |
| NewGen Asset Management Ltd new | 52,500 | $2M | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 51,977 | $2M | 0.1% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC trimmed | 49,441 | $2M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 46,368 | $2M | 0.1% | 2026-Q1 |
| ROYCE & ASSOCIATES LP added | 46,028 | $2M | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC added | 45,882 | $2M | 0.1% | 2026-Q1 |
| CITIGROUP INC trimmed | 45,360 | $2M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 4,101,413 | $144M | 7.4% | 2025-Q4 stale |
| ArrowMark Colorado Holdings LLC trimmed | 1,367,715 | $48M | 2.5% | 2025-Q4 stale |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 860,582 | $30M | 1.5% | 2025-Q4 stale |
| Allspring Global Investments Holdings, LLC added | 626,137 | $20M | 1.0% | 2025-Q2 stale |
| Glenmede Investment Management, LP trimmed | 347,374 | $13M | 0.7% | 2025-Q3 stale |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 324,152 | $10M | 0.5% | 2025-Q2 stale |
| Bridgewater Associates, LP trimmed | 249,506 | $9M | 0.4% | 2025-Q4 stale |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 234,628 | $8M | 0.4% | 2025-Q4 stale |
| AXA Investment Managers S.A. new | 190,126 | $7M | 0.4% | 2025-Q3 stale |
| AXA S.A. added | 209,563 | $6M | 0.3% | 2025-Q2 stale |
| Retirement Systems of Alabama | 163,913 | $6M | 0.3% | 2025-Q3 stale |
| JANE STREET GROUP, LLC trimmed | 132,982 | $5M | 0.2% | 2025-Q4 stale |
| Ellsworth Advisors, LLC new | 113,910 | $4M | 0.2% | 2025-Q3 stale |
| Boussard & Gavaudan Investment Management LLP new | 99,471 | $4M | 0.2% | 2025-Q4 stale |
| Bastion Asset Management Inc. added | 94,009 | $3M | 0.2% | 2025-Q4 stale |
| MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC trimmed | 82,163 | $3M | 0.2% | 2025-Q1 stale |
| TWINBEECH CAPITAL LP trimmed | 95,732 | $3M | 0.1% | 2025-Q2 stale |
| SCALAR GAUGE MANAGEMENT, LLC new | 86,000 | $3M | 0.1% | 2025-Q2 stale |
| SEIZERT CAPITAL PARTNERS, LLC added | 79,590 | $2M | 0.1% | 2025-Q2 stale |
| NORGES BANK trimmed | 47,967 | $2M | 0.1% | 2025-Q3 stale |
| DARK FOREST CAPITAL MANAGEMENT LP added | 57,229 | $2M | 0.1% | 2025-Q1 stale |
| Bridge City Capital, LLC trimmed | 49,591 | $2M | 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.