MagniteMGNI
13F holders, Q1 2025 (March 31)293holders +7
50new positions
40sold out
4famous investors
$11.41avg. 13F price*
At the end of Q1 2025, 293 institutions reported holding Magnite Inc. (MGNI) in their 13F filings, up 7 from Q4 2024. 50 opened new positions and 40 sold out. The largest holders were Vanguard Group Inc. ($156.8M), Capital Research Global Investors ($147.4M) and BlackRock, Inc. ($111.7M). 4 famous investors held it, including Mario Gabelli (0.0% of GAMCO Investors's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Magnite Inc.
- CUSIP
- 55955D100
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 50 | $43.9M |
| Exits | 40 | $36.5M |
All 13F filers, Q4 2024 → Q1 2025: 25,288,568 shares bought and 15,462,295 shares sold, net +9,826,273 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 293 holders
| Vanguard Group Inc. | 0.00% | Add +1.0% | 13,743,521 | $156.8M |
| Capital Research Global Investors | 0.03% | Add +67.3% | 12,920,070 | $147.4M |
| BlackRock, Inc. | 0.00% | Reduce -3.7% | 9,787,840 | $111.7M |
| FMR LLC | 0.01% | Add +499.7% | 9,684,198 | $110.5M |
| Wellington Management Group LLP | 0.01% | Reduce -16.0% | 5,903,271 | $67.4M |
| Dimensional Fund Advisors LP | 0.01% | Reduce -4.4% | 5,281,651 | $60.3M |
| Boston Partners | 0.07% | Add +10.9% | 5,276,356 | $60.2M |
| Edenbrook Capital, LLC | 27.77% | Add +29.4% | 4,016,672 | $45.8M |
| Nuveen, LLC | 0.01% | — | 3,596,503 | $41.0M |
| Geode Capital Management, LLC | 0.00% | Add +2.6% | 3,033,428 | $34.6M |
| American Century Companies Inc. | 0.02% | Add +855.2% | 2,961,009 | $33.8M |
| State Street Corp. | 0.00% | Reduce -1.3% | 2,903,060 | $33.1M |
| Nine Ten Capital Management LLC | 11.65% | Reduce -12.2% | 2,734,830 | $31.2M |
| Granahan Investment Management, LLC | 1.51% | Reduce -26.7% | 2,649,990 | $30.2M |
| Driehaus Capital Management LLC | 0.27% | Reduce -27.4% | 2,409,439 | $27.5M |
| Nomura Asset Management Co. Ltd. | 0.07% | Add +9.7% | 2,055,793 | $23.5M |
| Bank of New York Mellon Corp | 0.00% | Reduce -28.7% | 1,797,162 | $20.5M |
| UBS Group AG | 0.00% | Reduce -3.5% | 1,633,942 | $18.6M |
| Northern Trust Corp. | 0.00% | Reduce -5.3% | 1,570,877 | $17.9M |
| Royce & Associates LP | 0.15% | Reduce -26.0% | 1,182,806 | $13.5M |
| Pacer Advisors, Inc. | 0.03% | New | 1,102,156 | $12.6M |
| Maestria Partners LLC | 5.07% | Add +10.5% | 1,052,317 | $12.0M |
| Qube Research & Technologies Ltd | 0.02% | Add +50.9% | 1,038,131 | $11.8M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -3.0% | 1,017,939 | $11.6M |
| JPMorgan Chase & Co. | 0.00% | Reduce -34.6% | 988,789 | $11.3M |
| Stephens Investment Management Group LLC | 0.16% | Reduce -4.6% | 950,656 | $10.8M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -19.4% | 926,800 | $10.6M |
| Kennedy Capital Management LLC | 0.25% | Reduce -37.1% | 923,913 | $10.5M |
| Penn Capital Management Company, LLC | 1.02% | Add +17.4% | 914,685 | $10.5M |
| Bank of America Corp. | 0.00% | Add +160.4% | 913,431 | $10.4M |
| Verition Fund Management LLC | 0.06% | New | 906,099 | $10.3M |
| Grizzlyrock Capital, LLC | 9.30% | Add +4.0% | 898,541 | $10.3M |
| Nordea Investment Management AB | 0.01% | Add +1.0% | 902,771 | $10.1M |
| Morgan Stanley | 0.00% | Reduce -27.0% | 875,859 | $10.0M |
| Silvercrest Asset Management Group LLC | 0.07% | Reduce -24.4% | 808,247 | $9.2M |
| Meros Investment Management, LP | 5.02% | Reduce -19.2% | 749,438 | $8.6M |
| Intrinsic Edge Capital Management LLC | 1.75% | Add +1.9% | 733,044 | $8.4M |
| Granite Investment Partners, LLC | 0.42% | Reduce -20.7% | 720,873 | $8.2M |
| New York State Common Retirement Fund | 0.01% | Reduce -1.7% | 656,141 | $7.5M |
| Ameriprise Financial Inc. | 0.00% | Reduce -3.5% | 643,143 | $7.3M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.01% | Reduce -13.7% | 600,665 | $6.9M |
| Kopion Asset Management, LLC | 5.32% | Reduce -6.6% | 599,000 | $6.8M |
| Citadel Advisors | 0.01% | Add +91.1% | 592,929 | $6.8M |
| Harbor Capital Advisors, Inc. | 0.31% | Reduce -29.8% | 591,313 | $6.7M |
| King Luther Capital Management Corp. | 0.03% | Add +9.0% | 582,786 | $6.6M |
| Dana Investment Advisors, Inc. | 0.23% | Add +18.3% | 560,321 | $6.4M |
| First Eagle Investment Management, LLC | 0.01% | Add +35.0% | 495,657 | $5.7M |
| Weiss Asset Management LP | 0.20% | Add +232.1% | 455,128 | $5.2M |
| Russell Investments Group, Ltd. | 0.01% | Add +61.4% | 448,085 | $5.1M |
| Millennium Management | 0.01% | Add +98.4% | 434,479 | $5.0M |
| Advantage Alpha Capital Partners LP | 1.19% | Reduce -7.5% | 427,162 | $4.9M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +9.8% | 404,717 | $4.6M |
| Susquehanna International Group, LLP | 0.01% | Reduce -26.5% | 401,797 | $4.6M |
| Armistice Capital, LLC | 0.12% | New | 389,000 | $4.4M |
| Raymond James Financial Inc. | 0.00% | Reduce -33.7% | 361,776 | $4.1M |
| S Squared Technology, LLC | 2.05% | Reduce -37.4% | 351,621 | $4.0M |
| Frontier Capital Management Co. LLC | 0.04% | Reduce -46.6% | 345,374 | $3.9M |
| 1492 Capital Management LLC | 2.01% | Reduce -0.6% | 325,802 | $3.7M |
| First Trust Advisors LP | 0.00% | Add +16.8% | 323,910 | $3.7M |
| CenterBook Partners LP | 0.23% | Reduce -49.3% | 317,004 | $3.6M |
| Swiss National Bank | 0.00% | Add +9.1% | 272,600 | $3.1M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | Reduce -12.0% | 269,286 | $3.1M |
| Parallax Volatility Advisers, L.P. | 0.12% | Add +23.4% | 268,983 | $3.1M |
| Jane Street Group, LLC | 0.01% | Add +2197.9% | 266,736 | $3.0M |
| Bank of Montreal | 0.00% | Add +47.5% | 240,945 | $2.7M |
| EFG Asset Management (North America) Corp. | 0.45% | Add +19.6% | 236,505 | $2.7M |
| State of Wisconsin Investment Board | 0.01% | Add +225.2% | 233,681 | $2.7M |
| Envestnet Asset Management Inc. | 0.00% | Add +16.7% | 220,544 | $2.5M |
| Norges Bank | 0.00% | Reduce -45.0% | 219,298 | $2.5M |
| Voya Investment Management LLC | 0.00% | Reduce -30.9% | 210,134 | $2.4M |
| Invesco Ltd. | 0.00% | Reduce -23.2% | 208,991 | $2.4M |
| Oberweis Asset Management Inc./ | 0.12% | No change | 205,700 | $2.3M |
| Rhumbline Advisers | 0.00% | Add +4.4% | 192,502 | $2.2M |
| Susquehanna Fundamental Investments, LLC | 0.03% | Add +47.4% | 180,463 | $2.1M |
| Dark Forest Capital Management LP | 0.09% | New | 173,864 | $2.0M |
| Barclays PLC | 0.00% | Reduce -28.7% | 171,294 | $2.0M |
| Commonwealth Equity Services, LLC | 0.00% | Add +2.5% | 166,006 | $1.9M |
| Hilton Capital Management, LLC | 0.16% | Add +4.2% | 162,812 | $1.9M |
| Rice Hall James & Associates, LLC | 0.11% | Reduce -16.8% | 156,839 | $1.8M |
| Ardsley Advisory Partners LP | 0.41% | New | 156,000 | $1.8M |
| Citigroup Inc. | 0.00% | Reduce -54.7% | 153,568 | $1.8M |
| P.A.W. Capital Corp. | 4.23% | Reduce -23.1% | 150,000 | $1.7M |
| Royal Bank of Canada | 0.00% | Add +17.0% | 148,268 | $1.7M |
| Perkins Capital Management Inc. | 1.75% | Add +0.9% | 145,125 | $1.7M |
| Lisanti Capital Growth, LLC | 0.49% | Reduce -14.4% | 143,855 | $1.6M |
| Legal & General Group Plc | 0.00% | Add +2.4% | 142,966 | $1.6M |
| Alliancebernstein L.P. | 0.00% | No change | 136,645 | $1.6M |
| XTX Topco Ltd | 0.08% | New | 135,118 | $1.5M |
| Deutsche Bank AG | 0.00% | Reduce -13.0% | 131,670 | $1.5M |
| California State Teachers Retirement System | 0.00% | Add +9.6% | 130,061 | $1.5M |
| Tidal Investments LLC | 0.01% | Add +0.3% | 129,275 | $1.5M |
| Franklin Resources Inc. | 0.00% | Reduce -0.7% | 127,510 | $1.5M |
| Wedge Capital Management L L P | 0.03% | Add +18.4% | 125,166 | $1.4M |
| Principal Financial Group Inc. | 0.00% | Add +1.2% | 124,547 | $1.4M |
| Squarepoint Ops LLC | 0.00% | Reduce -60.4% | 123,786 | $1.4M |
| LPL Financial LLC | 0.00% | Reduce -5.6% | 122,352 | $1.4M |
| Victory Capital Management Inc. | 0.00% | Reduce -89.7% | 121,332 | $1.4M |
| Dynamic Technology Lab Private Ltd | 0.20% | New | 120,258 | $1.4M |
| Manatuck Hill Partners, LLC | 0.59% | Reduce -20.6% | 112,491 | $1.3M |
| Intech Investment Management LLC | 0.01% | Add +103.6% | 109,992 | $1.3M |
"% of holder's portfolio" is MGNI's weight in each manager's 13F, not the share of Magnite Inc. the manager owns.