MagniteMGNI
13F holders, Q2 2026 (June 30)311holders +14
50new positions
37sold out
5famous investors
$18.98avg. 13F price*
At the end of Q2 2026, 311 institutions reported holding Magnite Inc. (MGNI) in their 13F filings, up 14 from Q1 2026. 50 opened new positions and 37 sold out. The largest holders were BlackRock, Inc. ($241.3M), Vanguard Portfolio Management LLC ($155.6M) and FMR LLC ($147.3M). 5 famous investors held it, including Mario Gabelli (0.0% of GAMCO Investors's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Magnite Inc.
- CUSIP
- 55955D100
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 50 | $87.8M |
| Exits | 37 | $45.4M |
All 13F filers, Q1 2026 → Q2 2026: 25,863,072 shares bought and 15,545,650 shares sold, net +10,317,422 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 311 holders
| BlackRock, Inc. | 0.00% | Add +9.1% | 12,713,156 | $241.3M |
| Vanguard Portfolio Management LLC | 0.01% | Add +6.1% | 8,197,286 | $155.6M |
| FMR LLC | 0.01% | Add +72.2% | 7,759,426 | $147.3M |
| Vanguard Capital Management LLC | 0.00% | Add +0.6% | 6,225,195 | $118.2M |
| Wellington Management Group LLP | 0.02% | Reduce -34.2% | 6,044,492 | $114.7M |
| Dimensional Fund Advisors LP | 0.02% | Add +32.0% | 5,260,132 | $99.8M |
| Boston Partners | 0.09% | Add +6.2% | 5,013,835 | $95.9M |
| American Century Companies Inc. | 0.04% | Reduce -0.1% | 4,622,736 | $87.7M |
| Capital Research Global Investors | 0.01% | Reduce -22.9% | 3,869,159 | $73.4M |
| Nuveen, LLC | 0.02% | Add +5.7% | 3,794,811 | $72.0M |
| Geode Capital Management, LLC | 0.00% | Add +6.7% | 3,789,959 | $71.9M |
| Edenbrook Capital, LLC | 23.59% | Add +27.1% | 3,555,615 | $67.5M |
| State Street Corp. | 0.00% | Add +11.5% | 3,528,075 | $67.0M |
| 325 Capital LLC | 15.44% | Add +70.2% | 3,412,694 | $64.8M |
| Nine Ten Capital Management LLC | 19.26% | Reduce -6.3% | 3,261,283 | $61.9M |
| Granahan Investment Management, LLC | 2.09% | Add +20.8% | 3,083,211 | $58.5M |
| Canada Pension Plan Investment Board | 0.03% | Add +6403.7% | 2,995,093 | $56.8M |
| Jane Street Group, LLC | 0.03% | Add +31.8% | 2,199,191 | $41.7M |
| Park West Asset Management LLC | 2.60% | Add +234.2% | 2,000,000 | $38.0M |
| Morgan Stanley | 0.00% | Add +114.9% | 1,991,732 | $37.8M |
| Qube Research & Technologies Ltd | 0.04% | Add +195.9% | 1,955,989 | $37.1M |
| Blue Grotto Capital, LLC | 2.70% | Add +28.4% | 1,706,741 | $32.4M |
| Kennedy Capital Management LLC | 0.56% | Reduce -5.0% | 1,666,799 | $31.6M |
| Northern Trust Corp. | 0.00% | Add +17.4% | 1,553,412 | $29.5M |
| Royce & Associates LP | 0.23% | Add +7.9% | 1,473,397 | $28.0M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -2.3% | 1,466,640 | $27.8M |
| Ophir Asset Management Pty Ltd | 2.26% | Reduce -31.5% | 1,450,061 | $27.5M |
| Victory Capital Management Inc. | 0.01% | Reduce -2.5% | 1,235,384 | $23.4M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +1.9% | 1,203,189 | $22.8M |
| Bank of America Corp. | 0.00% | Add +5.0% | 1,181,832 | $22.4M |
| Grizzlyrock Capital, LLC | 15.46% | Reduce -6.0% | 1,164,628 | $22.1M |
| Bank of New York Mellon Corp | 0.00% | Add +2.1% | 1,162,198 | $22.1M |
| Maestria Partners LLC | 7.65% | Reduce -15.0% | 1,158,430 | $22.0M |
| Meros Investment Management, LP | 5.97% | Reduce -0.1% | 991,335 | $18.8M |
| Vanguard Fiduciary Trust Co. | 0.00% | Reduce -0.8% | 989,092 | $18.8M |
| Millennium Management | 0.01% | Reduce -38.0% | 764,819 | $14.5M |
| QVT Financial LP | 0.92% | Add +64.7% | 747,437 | $14.2M |
| UBS Group AG | 0.00% | Add +65.7% | 746,350 | $14.2M |
| Oberweis Asset Management Inc./ | 0.29% | Add +13.5% | 735,000 | $14.0M |
| Silvercrest Asset Management Group LLC | 0.09% | Add +14.9% | 707,749 | $13.4M |
| Picton Mahoney Asset Management | 0.12% | Add +7.5% | 691,471 | $13.1M |
| Kopion Asset Management, LLC | 8.09% | Reduce -21.2% | 674,451 | $12.8M |
| First Eagle Investment Management, LLC | 0.02% | Add +49.0% | 670,788 | $12.7M |
| Balyasny Asset Management L.P. | 0.02% | Reduce -55.6% | 666,554 | $12.7M |
| Ameriprise Financial Inc. | 0.00% | New | 619,573 | $11.8M |
| S Squared Technology, LLC | 3.34% | Add +41.0% | 567,862 | $10.8M |
| Schonfeld Strategic Advisors LLC | 0.06% | Reduce -65.0% | 562,195 | $10.7M |
| Nomura Asset Management Co. Ltd. | 0.02% | Reduce -6.7% | 553,900 | $10.5M |
| Bank of Montreal | 0.00% | New | 533,757 | $10.1M |
| King Luther Capital Management Corp. | 0.04% | Reduce -5.2% | 503,581 | $9.6M |
| Principal Financial Group Inc. | 0.00% | Add +11.6% | 497,522 | $9.4M |
| EVR Research LP | 4.50% | New | 480,000 | $9.1M |
| Citadel Advisors | 0.01% | Reduce -55.1% | 472,865 | $9.0M |
| Susquehanna International Group, LLP | 0.01% | Add +50.0% | 461,849 | $8.8M |
| Manatuck Hill Partners, LLC | 2.83% | Add +45.2% | 450,000 | $8.5M |
| Jump Financial, LLC | 0.08% | New | 428,036 | $8.1M |
| JPMorgan Chase & Co. | 0.00% | Reduce -16.4% | 407,025 | $7.9M |
| Nordea Investment Management AB | 0.01% | Reduce -8.2% | 386,327 | $7.4M |
| Commonwealth Equity Services, LLC | 0.01% | Add +2.4% | 368,199 | $7.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +12.9% | 364,638 | $6.9M |
| Marshall Wace, LLP | 0.01% | Add +705.0% | 341,864 | $6.5M |
| Trexquant Investment LP | 0.04% | New | 333,429 | $6.3M |
| Alyeska Investment Group, L.P. | 0.02% | New | 326,839 | $6.2M |
| 1492 Capital Management LLC | 1.78% | Reduce -6.7% | 317,750 | $6.0M |
| Harbor Capital Advisors, Inc. | 0.40% | Reduce -4.0% | 312,371 | $5.9M |
| Raymond James Financial Inc. | 0.00% | Add +6.2% | 309,931 | $5.9M |
| Swiss National Bank | 0.00% | Add +1.9% | 289,700 | $5.5M |
| Lisanti Capital Growth, LLC | 1.21% | Reduce -6.6% | 289,030 | $5.5M |
| Rice Hall James & Associates, LLC | 0.26% | Add +47.3% | 283,919 | $5.4M |
| ExodusPoint Capital Management, LP | 0.05% | Add +82.2% | 271,869 | $5.2M |
| Norwood Investment Partners, LP | 6.16% | Reduce -17.5% | 235,000 | $4.5M |
| Barclays PLC | 0.00% | Add +29.4% | 233,693 | $4.4M |
| Squarepoint Ops LLC | 0.01% | Reduce -23.5% | 230,234 | $4.4M |
| Senvest Management, LLC | 0.12% | No change | 224,100 | $4.3M |
| Invesco Ltd. | 0.00% | Reduce -15.0% | 222,213 | $4.2M |
| Hilton Capital Management, LLC | 0.28% | Add +5.4% | 219,406 | $4.2M |
| Pillsbury Lake Capital LLC | 1.13% | New | 217,753 | $4.1M |
| Occam Crest Management LP | 2.12% | New | 195,000 | $3.8M |
| Cerity Partners LLC | 0.00% | Add +98.6% | 200,984 | $3.8M |
| T. Rowe Price Associates Inc. | 0.00% | Add +20.6% | 199,445 | $3.8M |
| Voya Investment Management LLC | 0.00% | Reduce -6.6% | 196,662 | $3.7M |
| Rhumbline Advisers | 0.00% | Add +8.8% | 195,811 | $3.7M |
| Great Lakes Advisors, LLC | 0.03% | New | 176,615 | $3.4M |
| AQR Capital Management | 0.00% | Add +45.7% | 176,599 | $3.4M |
| State of Wisconsin Investment Board | 0.01% | Reduce -7.1% | 172,277 | $3.3M |
| California State Teachers Retirement System | 0.00% | Reduce -2.5% | 172,047 | $3.3M |
| Dean Investment Associates, LLC | 0.42% | New | 167,927 | $3.2M |
| Legato Capital Management LLC | 0.26% | Add +96.9% | 166,918 | $3.2M |
| Tidal Investments LLC | 0.01% | Add +24.0% | 165,838 | $3.1M |
| Sei Investments Co. | 0.00% | Reduce -52.8% | 165,553 | $3.1M |
| Deutsche Bank AG | 0.00% | Add +18.2% | 165,040 | $3.1M |
| LPL Financial LLC | 0.00% | Add +5.4% | 163,837 | $3.1M |
| Quantinno Capital Management LP | 0.00% | Add +26.3% | 161,782 | $3.1M |
| P.A.W. Capital Corp. | 2.33% | Reduce -5.9% | 160,000 | $3.0M |
| Clough Capital Partners L P | 0.25% | New | 159,586 | $3.0M |
| Concentric Capital Strategies, LP | 0.17% | New | 146,698 | $2.8M |
| Caption Management, LLC | 0.10% | Reduce -64.1% | 145,590 | $2.8M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | Add +11.1% | 140,438 | $2.7M |
| Algert Global LLC | 0.03% | Reduce -48.9% | 137,505 | $2.6M |
| Wells Fargo & Company | 0.00% | Add +107.8% | 137,396 | $2.6M |
"% of holder's portfolio" is MGNI's weight in each manager's 13F, not the share of Magnite Inc. the manager owns.