MagniteMGNI
13F holders, Q2 2025 (June 30)286holders −7
50new positions
57sold out
4famous investors
$24.11avg. 13F price*
At the end of Q2 2025, 286 institutions reported holding Magnite Inc. (MGNI) in their 13F filings, down 7 from Q1 2025. 50 opened new positions and 57 sold out. The largest holders were FMR LLC ($414.5M), Vanguard Group Inc. ($327.1M) and Capital Research Global Investors ($311.6M). 4 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), Mario Gabelli (0.0% of GAMCO Investors's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- Magnite Inc.
- CUSIP
- 55955D100
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 50 | $184.4M |
| Exits | 57 | $55.2M |
All 13F filers, Q1 2025 → Q2 2025: 26,645,428 shares bought and 12,581,017 shares sold, net +14,064,411 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 286 holders
| FMR LLC | 0.02% | Add +77.5% | 17,185,939 | $414.5M |
| Vanguard Group Inc. | 0.01% | Reduce -1.3% | 13,562,285 | $327.1M |
| Capital Research Global Investors | 0.06% | No change | 12,920,070 | $311.6M |
| BlackRock, Inc. | 0.00% | Add +9.3% | 10,698,044 | $258.0M |
| Boston Partners | 0.15% | Add +5.7% | 5,574,604 | $133.0M |
| Wellington Management Group LLP | 0.02% | Reduce -7.7% | 5,447,837 | $131.4M |
| Dimensional Fund Advisors LP | 0.03% | Reduce -7.2% | 4,901,833 | $118.2M |
| American Century Companies Inc. | 0.06% | Add +63.1% | 4,829,197 | $116.5M |
| Granahan Investment Management, LLC | 3.58% | Add +37.5% | 3,642,786 | $87.9M |
| Edenbrook Capital, LLC | 38.39% | Reduce -10.1% | 3,609,972 | $87.1M |
| Nuveen, LLC | 0.02% | Reduce -9.6% | 3,251,092 | $78.4M |
| Geode Capital Management, LLC | 0.01% | Add +6.0% | 3,216,842 | $77.6M |
| State Street Corp. | 0.00% | Add +5.2% | 3,053,607 | $73.7M |
| Nine Ten Capital Management LLC | 20.51% | Add +4.5% | 2,858,583 | $68.9M |
| Driehaus Capital Management LLC | 0.54% | Add +15.5% | 2,782,178 | $67.1M |
| Goldman Sachs Group Inc. | 0.01% | Add +106.7% | 1,915,400 | $46.2M |
| Schonfeld Strategic Advisors LLC | 0.35% | New | 1,900,598 | $45.8M |
| Bank of New York Mellon Corp | 0.01% | Add +0.1% | 1,798,240 | $43.4M |
| Frontier Capital Management Co. LLC | 0.40% | Add +419.4% | 1,793,830 | $43.3M |
| Nomura Asset Management Co. Ltd. | 0.12% | Reduce -15.3% | 1,740,741 | $42.0M |
| UBS Group AG | 0.01% | Add +6.1% | 1,733,218 | $41.8M |
| Maestria Partners LLC | 12.02% | Add +36.3% | 1,434,317 | $34.6M |
| Stephens Investment Management Group LLC | 0.43% | Add +42.0% | 1,350,096 | $32.6M |
| Northern Trust Corp. | 0.00% | Reduce -14.7% | 1,339,871 | $32.3M |
| Morgan Stanley | 0.00% | Add +33.6% | 1,170,555 | $28.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +11.9% | 1,139,541 | $27.5M |
| Royce & Associates LP | 0.27% | Reduce -8.9% | 1,077,906 | $26.0M |
| Apis Capital Advisors, LLC | 8.98% | New | 1,048,000 | $25.3M |
| Grizzlyrock Capital, LLC | 17.67% | Add +8.4% | 974,323 | $23.5M |
| JPMorgan Chase & Co. | 0.00% | Reduce -5.1% | 938,088 | $22.6M |
| Kennedy Capital Management LLC | 0.50% | Reduce -5.9% | 869,147 | $21.0M |
| Citadel Advisors | 0.02% | Add +40.8% | 835,102 | $20.1M |
| Silvercrest Asset Management Group LLC | 0.13% | Reduce -0.5% | 804,247 | $19.4M |
| Pacer Advisors, Inc. | 0.05% | Reduce -28.2% | 791,819 | $19.1M |
| Penn Capital Management Company, LLC | 1.56% | Reduce -18.2% | 747,834 | $18.1M |
| Meros Investment Management, LP | 8.04% | Reduce -6.3% | 702,142 | $16.9M |
| Balyasny Asset Management L.P. | 0.04% | New | 699,932 | $16.9M |
| Harbor Capital Advisors, Inc. | 0.64% | Add +7.2% | 634,147 | $15.3M |
| First Eagle Investment Management, LLC | 0.03% | Add +24.7% | 618,119 | $14.9M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.03% | Add +2.3% | 614,317 | $14.8M |
| J. Goldman & Co LP | 0.46% | New | 603,683 | $14.6M |
| Verition Fund Management LLC | 0.09% | Reduce -34.3% | 595,495 | $14.4M |
| Dana Investment Advisors, Inc. | 0.47% | Add +4.6% | 585,915 | $14.1M |
| King Luther Capital Management Corp. | 0.06% | Reduce -3.8% | 560,786 | $13.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +34.2% | 543,277 | $13.1M |
| Oberweis Asset Management Inc./ | 0.54% | Add +149.9% | 514,000 | $12.4M |
| New York State Common Retirement Fund | 0.02% | Reduce -24.8% | 493,225 | $11.9M |
| Norwood Investment Partners, LP | 8.35% | New | 462,000 | $11.1M |
| Kopion Asset Management, LLC | 6.88% | Reduce -29.4% | 423,178 | $10.2M |
| Alta Park Capital, LP | 1.23% | New | 413,602 | $10.0M |
| Bank of America Corp. | 0.00% | Reduce -54.7% | 413,425 | $10.0M |
| Raymond James Financial Inc. | 0.00% | Add +8.8% | 393,601 | $9.5M |
| Ardsley Advisory Partners LP | 1.46% | Add +137.2% | 370,000 | $8.9M |
| Lisanti Capital Growth, LLC | 2.46% | Add +155.8% | 368,015 | $8.9M |
| Susquehanna International Group, LLP | 0.01% | Reduce -9.3% | 364,532 | $8.8M |
| Advantage Alpha Capital Partners LP | 2.23% | Reduce -19.8% | 342,575 | $8.3M |
| Dilation Capital Management LP | 4.30% | New | 334,725 | $8.1M |
| Nordea Investment Management AB | 0.01% | Reduce -63.3% | 330,917 | $7.9M |
| Russell Investments Group, Ltd. | 0.01% | Reduce -28.1% | 322,200 | $7.8M |
| 1492 Capital Management LLC | 3.59% | Reduce -1.2% | 321,921 | $7.8M |
| Manatuck Hill Partners, LLC | 2.80% | Add +174.2% | 308,491 | $7.4M |
| S Squared Technology, LLC | 3.12% | Reduce -12.8% | 306,621 | $7.4M |
| Blue Grotto Capital, LLC | 0.83% | New | 284,804 | $6.9M |
| Jane Street Group, LLC | 0.01% | Add +6.6% | 284,290 | $6.9M |
| Barclays PLC | 0.00% | Add +60.1% | 274,193 | $6.6M |
| Swiss National Bank | 0.00% | No change | 272,600 | $6.6M |
| Roubaix Capital, LLC | 3.02% | New | 260,735 | $6.3M |
| Bank of Montreal | 0.00% | Add +0.6% | 242,346 | $5.8M |
| Envestnet Asset Management Inc. | 0.00% | Add +9.7% | 241,938 | $5.8M |
| Citigroup Inc. | 0.00% | Add +55.3% | 238,492 | $5.8M |
| Two Sigma Investments, LP | 0.01% | Add +344.1% | 237,826 | $5.7M |
| Invesco Ltd. | 0.00% | Add +10.2% | 230,293 | $5.6M |
| Voya Investment Management LLC | 0.01% | Add +9.3% | 229,628 | $5.5M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.02% | Reduce -16.3% | 225,281 | $5.4M |
| Rhumbline Advisers | 0.00% | Add +16.1% | 223,426 | $5.4M |
| Informed Momentum Co LLC | 0.79% | New | 217,478 | $5.2M |
| EFG Asset Management (North America) Corp. | 0.68% | Reduce -15.0% | 201,002 | $4.8M |
| Commonwealth Equity Services, LLC | 0.01% | Add +17.4% | 194,980 | $4.7M |
| State of Wisconsin Investment Board | 0.01% | Reduce -20.4% | 185,994 | $4.5M |
| Clough Capital Partners L P | 0.45% | New | 185,277 | $4.5M |
| Parallax Volatility Advisers, L.P. | 0.21% | Reduce -34.6% | 175,813 | $4.2M |
| AYAL Capital Advisors Ltd | 2.18% | New | 165,937 | $4.0M |
| Moody National Bank Trust Division | 0.36% | Add +54.8% | 161,332 | $3.9M |
| Legal & General Group Plc | 0.00% | Add +8.6% | 155,225 | $3.7M |
| Rice Hall James & Associates, LLC | 0.20% | Reduce -1.2% | 154,897 | $3.7M |
| Prelude Capital Management, LLC | 0.36% | Add +925.2% | 153,551 | $3.7M |
| Castleark Management LLC | 0.10% | New | 143,150 | $3.5M |
| Deutsche Bank AG | 0.00% | Add +7.7% | 141,801 | $3.4M |
| Comerica Bank | 0.01% | Add +323.4% | 141,617 | $3.4M |
| Alliancebernstein L.P. | 0.00% | Add +0.2% | 136,945 | $3.3M |
| Perkins Capital Management Inc. | 3.28% | Reduce -6.9% | 135,125 | $3.3M |
| Hilton Capital Management, LLC | 0.26% | Reduce -18.0% | 133,566 | $3.2M |
| California State Teachers Retirement System | 0.00% | Add +1.9% | 132,575 | $3.2M |
| P.A.W. Capital Corp. | 6.04% | Reduce -13.3% | 130,000 | $3.1M |
| Picton Mahoney Asset Management | 0.04% | New | 127,850 | $3.1M |
| Cannell Capital LLC | 0.95% | New | 126,578 | $3.1M |
| T. Rowe Price Associates Inc. | 0.00% | Add +18.7% | 117,601 | $2.8M |
| Zweig-DiMenna Associates LLC | 0.28% | New | 111,500 | $2.7M |
| Wells Fargo & Company | 0.00% | Add +18.6% | 111,397 | $2.7M |
| Norges Bank | 0.00% | Reduce -50.4% | 108,716 | $2.6M |
"% of holder's portfolio" is MGNI's weight in each manager's 13F, not the share of Magnite Inc. the manager owns.