Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in IAC held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 7.9M | $318.1M | +2.2% | 10.682% | 0.01% |
| 2 | ARISTEIA CAPITAL LLC | 5.9M | $236.5M | +3.6% | 7.944% | 5.27% |
| 3 | SOUTHEASTERN ASSET MANAGEMENT INC/TN/ | 4.0M | $161.0M | +0.8% | 5.408% | 7.92% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.6M | $143.8M | — | 4.828% | 0.01% |
| 5 | Helikon Investments Ltd | 3.5M | $140.8M | +88.5% | 4.730% | 5.32% |
| 6 | Corvex Management LP | 3.4M | $134.3M | 0.0% | 4.511% | 5.34% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2.9M | $116.8M | — | 3.923% | 0.00% |
| 8 | Patient Capital Management, LLC | 2.7M | $108.1M | +13.7% | 3.629% | 4.03% |
| 9 | DAVIS SELECTED ADVISERS | 2.4M | $96.6M | -4.0% | 3.245% | 0.44% |
| 10 | STATE STREET CORP | 2.3M | $90.3M | +2.9% | 3.032% | 0.00% |
| 11 | AQR CAPITAL MANAGEMENT LLC | 2.2M | $88.1M | +33.4% | 2.962% | 0.04% |
| 12 | BANK OF MONTREAL /CAN/ | 2.0M | $81.6M | -34.8% | 2.740% | 0.03% |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 1.2M | $47.8M | +1.3% | 1.605% | 0.00% |
| 14 | Wallace Capital Management Inc. | 1.1M | $44.8M | +26.7% | 1.505% | 5.15% |
| 15 | Boston Partners | 873K | $35.0M | +17.3% | 1.174% | 0.04% |
| 16 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 867K | $34.7M | +11.3% | 1.166% | 0.01% |
| 17 | BANK OF AMERICA CORP /DE/ | 832K | $33.3M | -0.6% | 1.119% | 0.00% |
| 18 | Empyrean Capital Partners, LP | 820K | $32.8M | +21.1% | 1.102% | 1.09% |
| 19 | MORGAN STANLEY | 816K | $32.7M | -10.1% | 1.097% | 0.00% |
| 20 | UBS Group AG | 719K | $28.8M | -8.0% | 0.966% | 0.00% |
| 21 | ALLEN HOLDING INC /NY | 601K | $24.1M | 0.0% | 0.808% | 2.39% |
| 22 | PUBLIC SECTOR PENSION INVESTMENT BOARD | 594K | $23.8M | +18.3% | 0.799% | 0.07% |
| 23 | JPMORGAN CHASE & CO | 568K | $22.2M | -10.6% | 0.764% | 1.41% |
| 24 | HIGHBRIDGE CAPITAL MANAGEMENT LLC | 568K | $22.2M | +36.2% | 0.764% | 1.41% |
| 25 | Allspring Global Investments Holdings, LLC | 554K | $22.1M | -6.6% | 0.745% | 0.04% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in IAC — a direct measure of their conviction.
Filings activity in IAC during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 326 | 6.3% | 85.84% | +1.57 pp | $2.72B | +1.9% |
| Q4 2025 | 348 | +4.5% | 84.27% | +11.78 pp | $2.67B | +16% |
| Q3 2025 | 333 | 1.8% | 72.49% | 9.19 pp | $2.30B | 11% |
| Q2 2025 | 339 | +3.7% | 81.68% | 13.13 pp | $2.59B | 14% |
| Q1 2025 | 327 | 4.4% | 94.81% | +5.17 pp | $3.01B | +5.8% |
| Q4 2024 | 342 | 2.3% | 89.64% | 21.44 pp | $2.84B | 19% |
| Q3 2024 | 350 | +2.6% | 111.08% | 30.05 pp | $3.52B | 21% |
| Q2 2024 | 341 | — | 141.13% | — | $4.47B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying IAC stock.
Based on Q1 2026 13F filings, institutional ownership of IAC InterActive Corp. stands at 85.8%, held across 326 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of IAC, with approximately 7,945,476 shares worth $0.32B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of IAC.
Our composite Smart Money Score for IAC is 40 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
44 institutions opened new positions in IAC during Q1 2026, while 66 fully exited. 191 added to existing positions and 86 trimmed.
IAC institutional ownership rose by 1.57 percentage points quarter-over-quarter, with a net change of -22 holders.
The top 10 institutions account for 56.8% of all reported 13F value in IAC, and the top 25 account for 77.9%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
IAC InterActive Corp. (IAC) Institutional Ownership