IAC INC (IAC) Institutional Shareholders
IAC INC (IAC) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $2.73B in IAC holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of IAC tracked by InsiderSet, reporting ownership valued at approximately $318.06M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $335.62M, representing an estimated gain of +5.52% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 57% of the total disclosed IAC value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Aristeia Capital, L.L.C., Longleaf Partners, and several other long-term asset managers with concentrated positions in IAC INC (IAC).
This page ranks the largest institutional IAC shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
325
Total Reported Value
$2.73B
Largest Holder
Blackrock, Inc.
Largest Position
$318.06M
Insider Transactions (90d)
1
Latest Filing Quarter
Q2 2026
New Institutional Positions
46
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 7,945,476 | $318,057,405 | $335,616,906 | +$17,559,501 | +5.52% | |
| Aristeia Capital, L.L.C. | 5.43% | 5,908,837 | $236,530,745 | $249,589,275 | +$13,058,530 | +5.52% | |
| Longleaf Partners | Mason Hawkins | 7.92% | 4,022,729 | $161,029,842 | $169,920,073 | +$8,890,231 | +5.52% |
| Vanguard Portfolio Management Llc | 0.01% | 3,591,172 | $143,754,615 | $151,691,105 | +$7,936,490 | +5.52% | |
| Helikon Investments Ltd | 5.32% | 3,518,414 | $140,842,112 | $148,617,807 | +$7,775,695 | +5.52% | |
| Corvex Management Lp | 5.34% | 3,355,075 | $134,303,652 | $141,718,368 | +$7,414,716 | +5.52% | |
| Vanguard Capital Management Llc | 0.00% | 2,917,892 | $116,803,217 | $123,251,758 | +$6,448,541 | +5.52% | |
| Patient Capital Management, Llc | 4.03% | 2,699,564 | $108,063,564 | $114,029,583 | +$5,966,019 | +5.52% | |
| Davis Selected Advisers | 0.44% | 2,413,247 | $96,602,764 | $101,935,553 | +$5,332,789 | +5.52% | |
| State Street Corp | 0.00% | 2,255,287 | $90,279,139 | $95,263,323 | +$4,984,184 | +5.52% | |
| Aqr Capital Management Llc | 0.04% | 2,203,183 | $88,127,321 | $93,062,450 | +$4,935,129 | +5.60% | |
| Bank Of Montreal | 0.03% | 2,037,824 | $81,574,094 | $86,077,686 | +$4,503,592 | +5.52% | |
| Geode Capital Management, Llc | 0.00% | 1,194,052 | $47,810,594 | $50,436,756 | +$2,626,162 | +5.49% | |
| Wallace Capital Management Inc. | 5.15% | 1,119,278 | $44,804,698 | $47,278,303 | +$2,473,605 | +5.52% | |
| Boston Partners | 0.04% | 873,339 | $34,959,055 | $36,889,839 | +$1,930,784 | +5.52% | |
| Charles Schwab Investment Management Inc | 0.01% | 867,299 | $34,717,979 | $36,634,710 | +$1,916,731 | +5.52% | |
| Bank Of America Corp | 0.00% | 831,980 | $33,304,159 | $35,142,835 | +$1,838,676 | +5.52% | |
| Empyrean Capital Partners, Lp | 1.09% | 820,000 | $32,824,600 | $34,636,800 | +$1,812,200 | +5.52% | |
| Morgan Stanley | 0.00% | 815,871 | $32,659,370 | $34,462,391 | +$1,803,021 | +5.52% | |
| Ubs Group Ag | 0.01% | 718,589 | $28,765,117 | $30,353,199 | +$1,588,082 | +5.52% | |
| Allen Holding Inc | 2.39% | 601,100 | $24,062,033 | $25,390,464 | +$1,328,431 | +5.52% | |
| Public Sector Pension Investment Board | 0.07% | 593,963 | $23,776,339 | $25,088,997 | +$1,312,658 | +5.52% | |
| Storebrand Asset Management As | 0.01% | 241,750 | $23,364,133 | $10,211,520 | -$13,152,613 | -56.29% | |
| Highbridge Capital Management Llc | 1.41% | 568,456 | $22,237,999 | $24,011,581 | +$1,773,582 | +7.98% | |
| Jpmorgan Chase & Co | 1.41% | 568,456 | $22,237,999 | $24,011,581 | +$1,773,582 | +7.98% | |
| Allspring Global Investments Holdings, Llc | 0.04% | 553,949 | $22,141,341 | $23,398,806 | +$1,257,465 | +5.68% | |
| Goldman Sachs Group Inc | 0.00% | 494,997 | $19,814,740 | $20,908,673 | +$1,093,933 | +5.52% | |
| Northern Trust Corp | 0.00% | 472,401 | $18,910,212 | $19,954,218 | +$1,044,006 | +5.52% | |
| Royal Bank Of Canada | 0.00% | 458,414 | $18,350,000 | $19,363,407 | +$1,013,407 | +5.52% | |
| Bnp Paribas Financial Markets | 0.01% | 411,114 | $16,456,893 | $17,365,455 | +$908,562 | +5.52% | |
| Vanguard Fiduciary Trust Co | 0.00% | 403,526 | $16,153,146 | $17,044,938 | +$891,792 | +5.52% | |
| Diamond Hill Capital Management Inc | 0.10% | 386,989 | $15,491,170 | $16,346,415 | +$855,245 | +5.52% | |
| Bragg Financial Advisors, Inc | 0.47% | 369,226 | $14,780,117 | $15,596,106 | +$815,989 | +5.52% | |
| State Of Wisconsin Investment Board | 0.03% | 356,113 | $14,255,203 | $15,042,213 | +$787,010 | +5.52% | |
| Royce & Associates Lp | 0.13% | 338,597 | $13,554,038 | $14,302,337 | +$748,299 | +5.52% | |
| Acr Alpine Capital Research, Llc | 0.19% | 291,826 | $13,470,688 | $12,326,730 | -$1,143,958 | -8.49% | |
| Bank Of New York Mellon Corp | 0.00% | 332,775 | $13,320,972 | $14,056,416 | +$735,444 | +5.52% | |
| Allen Operations Llc | 1.91% | 319,477 | $12,788,665 | $13,494,708 | +$706,043 | +5.52% | |
| Principal Financial Group Inc | 0.01% | 315,957 | $12,647,760 | $13,346,024 | +$698,264 | +5.52% | |
| Brooktree Capital Management | 9.98% | 314,448 | $12,587,353 | $13,282,284 | +$694,931 | +5.52% | |
| Applied Fundamental Research, Llc | 16.12% | 305,099 | $12,213,113 | $12,887,382 | +$674,269 | +5.52% | |
| Franklin Resources Inc | 0.00% | 300,563 | $12,031,536 | $12,695,781 | +$664,245 | +5.52% | |
| Invesco Ltd. | 0.00% | 287,944 | $11,526,399 | $12,162,755 | +$636,356 | +5.52% | |
| Foursixthree Capital Lp | 4.72% | 274,650 | $10,994,240 | $11,601,216 | +$606,976 | +5.52% | |
| Arex Capital Management, Lp | 16.54% | 250,000 | $10,007,500 | $10,560,000 | +$552,500 | +5.52% | |
| Harspring Capital Management, Llc | 5.16% | 245,000 | $9,807,350 | $10,348,800 | +$541,450 | +5.52% | |
| Gotham Asset Management, Llc | 0.03% | 217,753 | $8,716,653 | $9,197,887 | +$481,234 | +5.52% | |
| Whitebox Advisors Llc | 0.13% | 217,383 | $8,701,841 | $9,182,258 | +$480,417 | +5.52% | |
| Yakira Capital Management, Inc. | 2.53% | 215,898 | $8,642,397 | $9,119,532 | +$477,135 | +5.52% | |
| Millennium Management Llc | 0.01% | 214,239 | $8,575,987 | $9,049,455 | +$473,468 | +5.52% |
Frequently asked questions about IAC
Who owns the most IAC stock?
The largest holders of IAC are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for IAC INC (IAC).
Is IAC widely held by superinvestors?
Many widely followed stocks like IAC appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly IAC is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.