Who owns IAC (IAC)
Which tracked institutional funds hold IAC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See IAC 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.
How the tape is positioned
79 tracked funds added or opened IAC while 71 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
IAC’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 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes IAC more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in IAC 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 334 tracked filers holding IAC, 165 increased or opened the position and 174 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 IAC 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 15
- VANGUARD PORTFOLIO MANAGEMENT LLC$144M
- VANGUARD CAPITAL MANAGEMENT LLC$117M
- NORGES BANK$27M
- VANGUARD FIDUCIARY TRUST CO$16M
- FOURSIXTHREE CAPITAL LP$11M
- VANGUARD ASSET MANAGEMENT, Ltd$3M
Full exits 26
- VANGUARD GROUP INC$251M
- Apollo Management Holdings, L.P.$27M
- BROWN ADVISORY INC$25M
- Newtyn Management, LLC$21M
- Brandywine Global Investment Management, LLC$12M
- Ulysses Management LLC$8M
Largest adds
- Helikon Investments Ltd$68M
- AQR CAPITAL MANAGEMENT LLC$23M
- Patient Capital Management, LLC$15M
- ARISTEIA CAPITAL, L.L.C.$14M
- FRANKLIN RESOURCES INC$12M
- Wallace Capital Management Inc.$10M
Largest trims
- BlackRock, Inc.$83M
- BANK OF MONTREAL /CAN/$41M
- LEVIN CAPITAL STRATEGIES, L.P.$14M
- D. E. Shaw & Co., Inc.$14M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$11M
- Verition Fund Management LLC$7M
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 |
|---|---|---|---|---|
| ARISTEIA CAPITAL, L.L.C. added | 5,908,837 | $237M | 7.1% | 2026-Q1 |
| BlackRock, Inc. trimmed | 5,526,651 | $221M | 6.6% | 2026-Q1 |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ added | 4,022,729 | $161M | 4.8% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 3,591,172 | $144M | 4.3% | 2026-Q1 |
| Helikon Investments Ltd added | 3,518,414 | $141M | 4.2% | 2026-Q1 |
| Corvex Management LP | 3,355,075 | $134M | 4.0% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 2,917,892 | $117M | 3.5% | 2026-Q1 |
| Patient Capital Management, LLC added | 2,699,564 | $108M | 3.2% | 2026-Q1 |
| DAVIS SELECTED ADVISERS trimmed | 2,413,247 | $97M | 2.9% | 2026-Q1 |
| STATE STREET CORP added | 2,255,287 | $90M | 2.7% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 2,187,280 | $87M | 2.6% | 2026-Q1 |
| BANK OF MONTREAL /CAN/ trimmed | 2,037,824 | $82M | 2.4% | 2026-Q1 |
| THOMPSON SIEGEL & WALMSLEY LLC trimmed | 1,821,069 | $73M | 2.2% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,194,052 | $48M | 1.4% | 2026-Q1 |
| Wallace Capital Management Inc. added | 1,119,278 | $45M | 1.3% | 2026-Q1 |
| Boston Partners added | 873,339 | $35M | 1.0% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 867,299 | $35M | 1.0% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 831,980 | $33M | 1.0% | 2026-Q1 |
| Empyrean Capital Partners, LP added | 820,000 | $33M | 1.0% | 2026-Q1 |
| MORGAN STANLEY trimmed | 815,871 | $33M | 1.0% | 2026-Q1 |
| UBS Group AG trimmed | 718,589 | $29M | 0.9% | 2026-Q1 |
| NORGES BANK trimmed | 589,650 | $27M | 0.8% | 2026-Q1 |
| ALLEN HOLDING INC /NY | 601,100 | $24M | 0.7% | 2026-Q1 |
| Public Sector Pension Investment Board added | 593,963 | $24M | 0.7% | 2026-Q1 |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC added | 568,456 | $22M | 0.7% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 568,456 | $22M | 0.7% | 2026-Q1 |
| Allspring Global Investments Holdings, LLC trimmed | 553,949 | $22M | 0.7% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 494,997 | $20M | 0.6% | 2026-Q1 |
| NORTHERN TRUST CORP added | 472,401 | $19M | 0.6% | 2026-Q1 |
| ROYAL BANK OF CANADA added | 458,414 | $18M | 0.6% | 2026-Q1 |
| ACR Alpine Capital Research, LLC added | 450,788 | $18M | 0.5% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 411,114 | $16M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 403,526 | $16M | 0.5% | 2026-Q1 |
| DIAMOND HILL CAPITAL MANAGEMENT INC added | 386,989 | $15M | 0.5% | 2026-Q1 |
| Bragg Financial Advisors, Inc trimmed | 369,226 | $15M | 0.4% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD added | 356,113 | $14M | 0.4% | 2026-Q1 |
| ROYCE & ASSOCIATES LP added | 338,597 | $14M | 0.4% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 332,775 | $13M | 0.4% | 2026-Q1 |
| ALLEN OPERATIONS LLC | 319,477 | $13M | 0.4% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 315,957 | $13M | 0.4% | 2026-Q1 |
| BROOKTREE CAPITAL MANAGEMENT trimmed | 314,448 | $13M | 0.4% | 2026-Q1 |
| Applied Fundamental Research, LLC trimmed | 305,099 | $12M | 0.4% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 300,563 | $12M | 0.4% | 2026-Q1 |
| FOURSIXTHREE CAPITAL LP new | 274,650 | $11M | 0.3% | 2026-Q1 |
| AREX Capital Management, LP added | 250,000 | $10M | 0.3% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 247,772 | $10M | 0.3% | 2026-Q1 |
| Harspring Capital Management, LLC trimmed | 245,000 | $10M | 0.3% | 2026-Q1 |
| HRT FINANCIAL LP trimmed | 233,360 | $9M | 0.3% | 2026-Q1 |
| Invesco Ltd. trimmed | 231,067 | $9M | 0.3% | 2026-Q1 |
| Gotham Asset Management, LLC added | 217,753 | $9M | 0.3% | 2026-Q1 |
| WHITEBOX ADVISORS LLC added | 217,383 | $9M | 0.3% | 2026-Q1 |
| Yakira Capital Management, Inc. added | 215,898 | $9M | 0.3% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 214,239 | $9M | 0.3% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 213,737 | $9M | 0.3% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 211,257 | $8M | 0.3% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 209,999 | $8M | 0.3% | 2026-Q1 |
| Quantinno Capital Management LP added | 205,408 | $8M | 0.2% | 2026-Q1 |
| FMR LLC added | 183,074 | $7M | 0.2% | 2026-Q1 |
| Orvieto Partners, L.P. added | 170,000 | $7M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 168,420 | $7M | 0.2% | 2026-Q1 |
| Steamboat Capital Partners, LLC trimmed | 158,866 | $6M | 0.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 154,202 | $6M | 0.2% | 2026-Q1 |
| CITIGROUP INC trimmed | 153,531 | $6M | 0.2% | 2026-Q1 |
| Amundi added | 152,304 | $6M | 0.2% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC added | 150,464 | $6M | 0.2% | 2026-Q1 |
| Assenagon Asset Management S.A. trimmed | 135,206 | $5M | 0.2% | 2026-Q1 |
| Swiss National Bank trimmed | 134,700 | $5M | 0.2% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 130,413 | $5M | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 130,356 | $5M | 0.2% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 129,313 | $5M | 0.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 115,830 | $5M | 0.1% | 2026-Q1 |
| PINNACLE ASSOCIATES LTD trimmed | 114,879 | $5M | 0.1% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 114,094 | $5M | 0.1% | 2026-Q1 |
| XTX Topco Ltd added | 105,137 | $4M | 0.1% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 98,774 | $4M | 0.1% | 2026-Q1 |
| Joel Isaacson & Co., LLC trimmed | 95,691 | $4M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 6,415,239 | $251M | 7.5% | 2025-Q4 stale |
| Burgundy Asset Management Ltd. trimmed | 2,501,914 | $92M | 2.7% | 2025-Q3 stale |
| Contrarius Group Holdings Ltd new | 1,101,230 | $51M | 1.5% | 2025-Q1 stale |
| Asset Value Investors Ltd added | 1,011,350 | $46M | 1.4% | 2025-Q1 stale |
| ArrowMark Colorado Holdings LLC trimmed | 1,166,049 | $44M | 1.3% | 2025-Q2 stale |
| Apollo Management Holdings, L.P. new | 700,000 | $27M | 0.8% | 2025-Q4 stale |
| Arkhouse Management Co. LP added | 800,061 | $27M | 0.8% | 2025-Q3 stale |
| BROWN ADVISORY INC trimmed | 630,495 | $25M | 0.7% | 2025-Q4 stale |
| Northern Right Capital Management, L.P. added | 568,409 | $21M | 0.6% | 2025-Q2 stale |
| Newtyn Management, LLC trimmed | 525,000 | $21M | 0.6% | 2025-Q4 stale |
| WCM INVESTMENT MANAGEMENT, LLC added | 373,866 | $17M | 0.5% | 2025-Q1 stale |
| Incline Global Management LLC added | 452,404 | $15M | 0.5% | 2025-Q3 stale |
| FIRST MANHATTAN CO. LLC. trimmed | 377,431 | $13M | 0.4% | 2025-Q3 stale |
| MANGROVE PARTNERS IM, LLC | 338,643 | $13M | 0.4% | 2025-Q2 stale |
| Brandywine Global Investment Management, LLC trimmed | 302,056 | $12M | 0.4% | 2025-Q4 stale |
| Artisan Partners Limited Partnership trimmed | 339,519 | $12M | 0.3% | 2025-Q3 stale |
| California Public Employees Retirement System trimmed | 266,763 | $10M | 0.3% | 2025-Q2 stale |
| Ulysses Management LLC trimmed | 206,129 | $8M | 0.2% | 2025-Q4 stale |
| Jump Financial, LLC trimmed | 172,277 | $7M | 0.2% | 2025-Q4 stale |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 171,168 | $7M | 0.2% | 2025-Q4 stale |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 167,300 | $6M | 0.2% | 2025-Q2 stale |
| TUDOR INVESTMENT CORP ET AL | 177,567 | $6M | 0.2% | 2025-Q4 stale |
| Tabor Asset Management, LP new | 128,734 | $6M | 0.2% | 2025-Q1 stale |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 99,703 | $4M | 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.