Magnite, Inc.
MGNI- Exchange
- Nasdaq
- Industry
- Services-Computer Programming, Data Processing, Etc.
- SEC CIK
- 0001595974
In the last 90 days, Magnite, Inc. insiders filed 0 open-market purchases and 26 sales; 311 institutions reported holding it in 13F filings for Q2 2026, worth $2.69B in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Magnite, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 304
- +1 vs. Q3 2025
- Shares held
- 136.7M
- −1.02M (−0.7%) vs. Q3 2025
- Total value
- $2.22B
- −$779.0M (−26.0%) vs. Q3 2025
- New holders
- 56
- 122 more added
- Sold out
- 55
- 93 more reduced
13 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MGNI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 311 | $2.69B |
| Q1 2026 | 297 | $1.56B |
| Q4 2025 | 304 | $2.22B |
| Q3 2025 | 316 | $3.00B |
| Q2 2025 | 287 | $3.54B |
| Q1 2025 | 293 | $1.52B |
| Q4 2024 | 286 | $1.97B |
| Q3 2024 | 280 | $1.65B |
| Q2 2024 | 269 | $1.39B |
| Q1 2024 | 232 | $1.10B |
| Q4 2023 | 217 | $959.0M |
| Q3 2023 | 215 | $780.6M |
| Q2 2023 | 224 | $1.39B |
| Q1 2023 | 224 | $892.4M |
| Q4 2022 | 231 | $988.1M |
| Q3 2022 | 218 | $679.0M |
| Q2 2022 | 231 | $781.6M |
| Q1 2022 | 231 | $1.17B |
| Q4 2021 | 248 | $1.57B |
| Q3 2021 | 279 | $2.52B |
| Q2 2021 | 268 | $2.89B |
| Q1 2021 | 280 | $3.59B |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Magnite, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 14,802,630 | $240.2M | 0.00% | +148,198+1.0% | Added |
| Capital Research Global Investors | 12,920,289 | $209.7M | 0.04% | +5,937,428+85.0% | Added |
| BlackRock, Inc. | 11,593,249 | $188.2M | 0.00% | +180,094+1.6% | Added |
| Wellington Management Group LLP | 8,629,238 | $140.1M | 0.02% | +3,484,689+67.7% | Added |
| FMR LLC | 6,701,174 | $108.8M | 0.01% | −10,439,840−60.9% | Reduced |
| American Century Companies Inc | 5,286,928 | $85.8M | 0.04% | +692,858+15.1% | Added |
| Boston Partners | 4,108,893 | $66.6M | 0.07% | −340,111−7.6% | Reduced |
| Dimensional Fund Advisors LP | 3,615,820 | $58.7M | 0.01% | +48,566+1.4% | Added |
| Nuveen, LLC | 3,531,108 | $57.3M | 0.02% | +439,072+14.2% | Added |
| Geode Capital Management, LLC | 3,434,062 | $55.7M | 0.00% | +34,969+1.0% | Added |
| State Street Corp | 3,141,991 | $51.0M | 0.00% | +15,201+0.5% | Added |
| Granahan Investment Management Inc | 3,115,930 | $50.6M | 2.17% | −757,249−19.6% | Reduced |
| Nine Ten Capital Management LLC | 3,003,583 | $48.7M | 15.43% | +145,000+5.1% | Added |
| Edenbrook Capital, LLC | 2,788,036 | $45.2M | 19.10% | +677,666+32.1% | Added |
| Ophir Asset Management Pty Ltd | 2,384,187 | $38.7M | 4.34% | +2,384,187 | New |
| 325 Capital LLC | 2,005,387 | $32.5M | 11.40% | +1,355,326+208.5% | Added |
| Morgan Stanley | 1,862,538 | $30.2M | 0.00% | −183,699−9.0% | Reduced |
| Goldman Sachs Group Inc | 1,761,037 | $28.6M | 0.00% | −624,402−26.2% | Reduced |
| Blue Grotto Capital, LLC | 1,628,782 | $26.4M | 2.72% | +79,986+5.2% | Added |
| No Street GP LP | 1,475,000 | $23.9M | 1.61% | +1,475,000 | New |
| Kennedy Capital Management, Inc. | 1,435,970 | $23.3M | 0.49% | +222,357+18.3% | Added |
| Maestria Partners LLC | 1,363,505 | $22.1M | 6.48% | +222,334+19.5% | Added |
| Northern Trust Corp | 1,272,068 | $20.6M | 0.00% | −92,988−6.8% | Reduced |
| Charles Schwab Investment Management Inc | 1,187,501 | $19.3M | 0.00% | −30,347−2.5% | Reduced |
| Bank of New York Mellon Corp | 1,183,318 | $19.2M | 0.00% | −78,575−6.2% | Reduced |
| Royce & Associates LP | 1,166,469 | $18.9M | 0.19% | +190,318+19.5% | Added |
| Stephens Investment Management Group LLC | 1,128,578 | $18.3M | 0.24% | +164,035+17.0% | Added |
| Frontier Capital Management Co LLC | 944,701 | $15.3M | 0.16% | −148,532−13.6% | Reduced |
| Balyasny Asset Management LLC | 873,208 | $14.2M | 0.03% | +873,208 | New |
| Meros Investment Management, LP | 825,595 | $13.4M | 5.31% | +211,767+34.5% | Added |
| J. Goldman & Co LP | 782,837 | $12.7M | 0.49% | −245,861−23.9% | Reduced |
| Schonfeld Strategic Advisors LLC | 779,681 | $12.7M | 0.06% | +779,681 | New |
| Price T Rowe Associates Inc | 711,495 | $11.5M | 0.00% | −1,836,010−72.1% | Reduced |
| Penn Capital Management Co Inc | 694,766 | $11.3M | 0.90% | −19,167−2.7% | Reduced |
| Silvercrest Asset Management Group LLC | 685,259 | $11.1M | 0.08% | +160,362+30.6% | Added |
| Bank of America Corp | 651,953 | $10.6M | 0.00% | −144,291−18.1% | Reduced |
| Oberweis Asset Management Inc | 635,800 | $10.3M | 0.38% | +121,800+23.7% | Added |
| Nomura Asset Management Co Ltd | 622,700 | $10.1M | 0.03% | −717,065−53.5% | Reduced |
| Kopion Asset Management, LLC | 614,459 | $9.97M | 7.13% | +367,858+149.2% | Added |
| Apis Capital Advisors, LLC | 604,000 | $9.80M | 1.71% | −235,399−28.0% | Reduced |
| Pillsbury Lake Capital LLC | 583,644 | $9.47M | 3.86% | +583,644 | New |
| Grizzlyrock Capital, LLC | 571,906 | $9.28M | 6.95% | +181,000+46.3% | Added |
| Citadel Advisors LLC | 544,318 | $8.83M | 0.01% | +374,757+221.0% | Added |
| King Luther Capital Management Corp | 515,635 | $8.37M | 0.03% | +65,675+14.6% | Added |
| Algert Global LLC | 509,860 | $8.28M | 0.13% | +462,590+978.6% | Added |
| JPMorgan Chase & Co | 506,393 | $8.22M | 0.00% | −703,020−58.1% | Reduced |
| New York State Common Retirement Fund | 474,457 | $7.70M | 0.01% | 00.0% | Unchanged |
| Nordea Investment Management AB | 445,016 | $7.34M | 0.01% | −2,324−0.5% | Reduced |
| Russell Investments Group, Ltd. | 451,021 | $7.32M | 0.01% | +141,417+45.7% | Added |
| UBS Group AG | 404,014 | $6.56M | 0.00% | −21,263−5.0% | Reduced |
| S Squared Technology, LLC | 402,862 | $6.54M | 2.53% | +135,000+50.4% | Added |
| Picton Mahoney Asset Management | 388,131 | $6.30M | 0.07% | +799+0.2% | Added |
| Jane Street Group, LLC | 380,253 | $6.17M | 0.01% | −710,370−65.1% | Reduced |
| Barclays PLC | 366,390 | $5.95M | 0.00% | +155,735+73.9% | Added |
| Two Sigma Investments, LP | 363,412 | $5.90M | 0.01% | +62,981+21.0% | Added |
| Manatuck Hill Partners, LLC | 350,000 | $5.68M | 1.99% | +709+0.2% | Added |
| 1492 Capital Management LLC | 341,398 | $5.54M | 2.12% | +4,732+1.4% | Added |
| Norwood Investment Partners, LP | 330,000 | $5.36M | 6.03% | −100,000−23.3% | Reduced |
| UBS Asset Management Americas Inc | 328,260 | $5.33M | 0.00% | +7,073+2.2% | Added |
| Man Group plc | 311,536 | $5.06M | 0.01% | +311,536 | New |
| Susquehanna International Group, LLP | 307,607 | $4.99M | 0.01% | −305,378−49.8% | Reduced |
| Raymond James Financial Inc | 297,716 | $4.83M | 0.00% | −12,937−4.2% | Reduced |
| First Eagle Investment Management, LLC | 296,443 | $4.81M | 0.01% | −279,000−48.5% | Reduced |
| Swiss National Bank | 280,700 | $4.56M | 0.00% | +8,100+3.0% | Added |
| Bank of Montreal | 276,273 | $4.48M | 0.00% | +34,941+14.5% | Added |
| Simplex Trading, LLC | 263,362 | $4.27M | 0.12% | +146,317+125.0% | Added |
| Dana Investment Advisors, Inc. | 254,935 | $4.14M | 0.12% | −154,186−37.7% | Reduced |
| Commonwealth Equity Services, LLC | 254,318 | $4.13M | 0.01% | +42,000+19.8% | Added |
| Invesco Ltd. | 243,565 | $3.95M | 0.00% | −15,167−5.9% | Reduced |
| Principal Financial Group Inc | 237,220 | $3.85M | 0.00% | +74,780+46.0% | Added |
| Senvest Management, LLC | 224,100 | $3.64M | 0.11% | +224,100 | New |
| Voya Investment Management LLC | 220,440 | $3.58M | 0.00% | +32,348+17.2% | Added |
| State of Wisconsin Investment Board | 219,559 | $3.56M | 0.01% | +12,654+6.1% | Added |
| Harbor Capital Advisors, Inc. | 214,251 | $3.48M | 0.27% | +42,080+24.4% | Added |
| SEI Investments Co | 211,537 | $3.43M | 0.00% | +136,554+182.1% | Added |
| Qube Research & Technologies Ltd | 202,936 | $3.29M | 0.00% | −6,002−2.9% | Reduced |
| AYAL Capital Advisors Ltd | 200,000 | $3.25M | 1.78% | +1,000+0.5% | Added |
| First Trust Advisors LP | 199,872 | $3.24M | 0.00% | −105,015−34.4% | Reduced |
| Rice Hall James & Associates, LLC | 198,828 | $3.23M | 0.18% | +65,610+49.3% | Added |
| Wells Fargo & Company | 193,619 | $3.14M | 0.00% | +55,898+40.6% | Added |
| Wedge Capital Management L L P | 189,903 | $3.08M | 0.06% | +59,124+45.2% | Added |
| Rhumbline Advisers | 183,945 | $2.99M | 0.00% | −33,362−15.4% | Reduced |
| Hilton Capital Management, LLC | 180,473 | $2.93M | 0.22% | +39,415+27.9% | Added |
| Federated Hermes, Inc. | 172,947 | $2.81M | 0.00% | +149,847+648.7% | Added |
| CenterBook Partners LP | 172,546 | $2.80M | 0.14% | +99,760+137.1% | Added |
| Envestnet Asset Management Inc | 163,954 | $2.66M | 0.00% | −6,198−3.6% | Reduced |
| Prelude Capital Management, LLC | 152,200 | $2.47M | 0.18% | +38,551+33.9% | Added |
| Victory Capital Management Inc | 151,084 | $2.45M | 0.00% | +104,783+226.3% | Added |
| Legal & General Group Plc | 148,841 | $2.42M | 0.00% | −11,596−7.2% | Reduced |
| Bridgewater Associates, LP | 145,187 | $2.36M | 0.01% | −484−0.3% | Reduced |
| P.A.W. Capital Corp | 140,000 | $2.27M | 5.16% | +40,000+40.0% | Added |
| California State Teachers Retirement System | 136,524 | $2.22M | 0.00% | +3,943+3.0% | Added |
| IMC-Chicago, LLC | 133,096 | $2.16M | 0.04% | +133,096 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 129,787 | $2.11M | 0.00% | −283,363−68.6% | Reduced |
| Deutsche Bank AG | 128,468 | $2.09M | 0.00% | −1,183−0.9% | Reduced |
| Alliancebernstein L.P. | 125,345 | $2.03M | 0.00% | −19,300−13.3% | Reduced |
| Toroso Investments, LLC | 123,908 | $2.01M | 0.01% | +24,822+25.1% | Added |
| Perkins Capital Management Inc | 121,775 | $1.98M | 1.57% | −9,500−7.2% | Reduced |
| Boothbay Fund Management, LLC | 117,842 | $1.91M | 0.05% | +58,965+100.1% | Added |
| LPL Financial LLC | 116,450 | $1.89M | 0.00% | +6,583+6.0% | Added |