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 24 sales; 311 institutions reported holding it in 13F filings for Q2 2026, worth $2.69B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Magnite, Inc. as of Mar 31, 2026. 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
- 297
- −2 vs. Q4 2025
- Shares held
- 131.6M
- +9.78M (+8.0%) vs. Q4 2025
- Total value
- $1.56B
- −$413.1M (−20.9%) vs. Q4 2025
- New holders
- 52
- 114 more added
- Sold out
- 54
- 80 more reduced
5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Magnite, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| AQR Capital Management LLC | 121,212 | $1.44M | 0.00% | +23,677+24.3% | Added |
| Legal & General Group Plc | 122,047 | $1.45M | 0.00% | −26,794−18.0% | Reduced |
| Vanguard Asset Management, Ltd | 126,372 | $1.50M | 0.00% | +126,372 | New |
| Quantinno Capital Management LP | 128,133 | $1.52M | 0.00% | +75,686+144.3% | Added |
| Twinbeech Capital LP | 132,379 | $1.57M | 0.16% | +132,379 | New |
| Brevan Howard Capital Management LP | 133,245 | $1.58M | 0.02% | +133,245 | New |
| Toroso Investments, LLC | 133,764 | $1.59M | 0.00% | +9,856+8.0% | Added |
| Deutsche Bank AG | 139,644 | $1.66M | 0.00% | +11,176+8.7% | Added |
| XTX Topco Ltd | 146,591 | $1.74M | 0.03% | +99,928+214.1% | Added |
| ExodusPoint Capital Management, LP | 149,219 | $1.77M | 0.02% | +149,219 | New |
| Dba Trading, LLC | 150,000 | $1.78M | 0.89% | +95,000+172.7% | Added |
| LPL Financial LLC | 155,444 | $1.85M | 0.00% | +38,994+33.5% | Added |
| Price T Rowe Associates Inc | 165,440 | $1.97M | 0.00% | −546,055−76.7% | Reduced |
| P.A.W. Capital Corp | 170,000 | $2.02M | 1.62% | +30,000+21.4% | Added |
| California State Teachers Retirement System | 176,528 | $2.10M | 0.00% | +40,004+29.3% | Added |
| Walleye Trading LLC | 179,394 | $2.13M | 0.04% | +126,527+239.3% | Added |
| Rhumbline Advisers | 179,976 | $2.14M | 0.00% | −3,969−2.2% | Reduced |
| Barclays PLC | 180,646 | $2.15M | 0.00% | −185,744−50.7% | Reduced |
| State of Wisconsin Investment Board | 185,470 | $2.20M | 0.01% | −34,089−15.5% | Reduced |
| Wedge Capital Management L L P | 189,767 | $2.25M | 0.04% | −136−0.1% | Reduced |
| Rice Hall James & Associates, LLC | 192,808 | $2.29M | 0.13% | −6,020−3.0% | Reduced |
| Hilton Capital Management, LLC | 208,154 | $2.47M | 0.19% | +27,681+15.3% | Added |
| Voya Investment Management LLC | 210,567 | $2.50M | 0.00% | −9,873−4.5% | Reduced |
| Senvest Management, LLC | 224,100 | $2.66M | 0.09% | 00.0% | Unchanged |
| Invesco Ltd. | 261,370 | $3.11M | 0.00% | +17,805+7.3% | Added |
| Algert Global LLC | 269,035 | $3.20M | 0.05% | −240,825−47.2% | Reduced |
| Swiss National Bank | 284,300 | $3.38M | 0.00% | +3,600+1.3% | Added |
| Norwood Investment Partners, LP | 285,000 | $3.39M | 5.21% | −45,000−13.6% | Reduced |
| Raymond James Financial Inc | 291,715 | $3.47M | 0.00% | −6,001−2.0% | Reduced |
| Squarepoint Ops LLC | 300,934 | $3.58M | 0.01% | +255,496+562.3% | Added |
| Alliancebernstein L.P. | 223,191 | $3.62M | 0.00% | +97,846+78.1% | Added |
| Susquehanna International Group, LLP | 307,805 | $3.66M | 0.00% | +198+0.1% | Added |
| Lisanti Capital Growth, LLC | 309,440 | $3.68M | 0.93% | +309,440 | New |
| Manatuck Hill Partners, LLC | 310,000 | $3.68M | 1.21% | −40,000−11.4% | Reduced |
| UBS Asset Management Americas Inc | 323,018 | $3.84M | 0.00% | −5,242−1.6% | Reduced |
| Harbor Capital Advisors, Inc. | 325,261 | $3.86M | 0.31% | +111,010+51.8% | Added |
| 1492 Capital Management LLC | 340,542 | $4.05M | 1.54% | −856−0.3% | Reduced |
| SEI Investments Co | 350,862 | $4.17M | 0.00% | +139,325+65.9% | Added |
| Commonwealth Equity Services, LLC | 359,570 | $4.27M | 0.01% | +105,252+41.4% | Added |
| Two Sigma Investments, LP | 394,856 | $4.69M | 0.00% | +31,444+8.7% | Added |
| S Squared Technology, LLC | 402,862 | $4.79M | 1.81% | 00.0% | Unchanged |
| Caption Management, LLC | 405,053 | $4.81M | 0.23% | +388,853+2,400.3% | Added |
| Nordea Investment Management AB | 421,008 | $4.90M | 0.00% | −24,008−5.4% | Reduced |
| Principal Financial Group Inc | 445,950 | $5.30M | 0.00% | +208,730+88.0% | Added |
| First Eagle Investment Management, LLC | 450,288 | $5.35M | 0.01% | +153,845+51.9% | Added |
| UBS Group AG | 450,349 | $5.35M | 0.00% | +46,335+11.5% | Added |
| QVT Financial LP | 453,910 | $5.39M | 0.43% | +392,617+640.6% | Added |
| Capital World Investors | 456,672 | $5.43M | 0.00% | +456,672 | New |
| JPMorgan Chase & Co | 486,868 | $5.63M | 0.00% | −19,525−3.9% | Reduced |
| Pacer Advisors, Inc. | 501,578 | $5.96M | 0.02% | +501,578 | New |
| King Luther Capital Management Corp | 531,066 | $6.31M | 0.03% | +15,431+3.0% | Added |
| CenterBook Partners LP | 564,156 | $6.70M | 0.36% | +391,610+227.0% | Added |
| Nomura Asset Management Co Ltd | 593,900 | $7.06M | 0.02% | −28,800−4.6% | Reduced |
| Park West Asset Management LLC | 598,380 | $7.11M | 0.63% | +598,380 | New |
| Silvercrest Asset Management Group LLC | 616,084 | $7.32M | 0.05% | −69,175−10.1% | Reduced |
| Picton Mahoney Asset Management | 643,078 | $7.64M | 0.08% | +254,947+65.7% | Added |
| Oberweis Asset Management Inc | 647,600 | $7.69M | 0.23% | +11,800+1.9% | Added |
| Qube Research & Technologies Ltd | 661,057 | $7.85M | 0.01% | +458,121+225.7% | Added |
| Man Group plc | 663,957 | $7.89M | 0.02% | +352,421+113.1% | Added |
| Kopion Asset Management, LLC | 855,904 | $10.2M | 7.91% | +241,445+39.3% | Added |
| Morgan Stanley | 926,819 | $11.0M | 0.00% | −935,719−50.2% | Reduced |
| Meros Investment Management, LP | 992,351 | $11.8M | 5.11% | +166,756+20.2% | Added |
| Vanguard Fiduciary Trust Co | 997,082 | $11.8M | 0.00% | +997,082 | New |
| Citadel Advisors LLC | 1,052,908 | $12.5M | 0.01% | +508,590+93.4% | Added |
| Bank of America Corp | 1,125,196 | $13.4M | 0.00% | +473,243+72.6% | Added |
| Bank of New York Mellon Corp | 1,138,217 | $13.5M | 0.00% | −45,101−3.8% | Reduced |
| Charles Schwab Investment Management Inc | 1,180,431 | $14.0M | 0.00% | −7,070−0.6% | Reduced |
| Millennium Management LLC | 1,234,457 | $14.7M | 0.01% | +1,210,713+5,099.0% | Added |
| Grizzlyrock Capital, LLC | 1,238,680 | $14.7M | 11.65% | +666,774+116.6% | Added |
| Victory Capital Management Inc | 1,266,522 | $15.0M | 0.01% | +1,115,438+738.3% | Added |
| Northern Trust Corp | 1,322,571 | $15.7M | 0.00% | +50,503+4.0% | Added |
| Blue Grotto Capital, LLC | 1,328,782 | $15.8M | 1.82% | −300,000−18.4% | Reduced |
| Maestria Partners LLC | 1,363,505 | $16.2M | 5.91% | 00.0% | Unchanged |
| Royce & Associates LP | 1,365,489 | $16.2M | 0.16% | +199,020+17.1% | Added |
| Balyasny Asset Management LLC | 1,500,443 | $17.8M | 0.04% | +627,235+71.8% | Added |
| Goldman Sachs Group Inc | 1,500,852 | $17.8M | 0.00% | −260,185−14.8% | Reduced |
| Schonfeld Strategic Advisors LLC | 1,605,041 | $19.1M | 0.16% | +825,360+105.9% | Added |
| No Street GP LP | 1,628,248 | $19.3M | 1.29% | +153,248+10.4% | Added |
| Jane Street Group, LLC | 1,668,160 | $19.8M | 0.02% | +1,287,907+338.7% | Added |
| Kennedy Capital Management, Inc. | 1,753,542 | $20.8M | 0.44% | +317,572+22.1% | Added |
| 325 Capital LLC | 2,005,387 | $23.8M | 8.68% | 00.0% | Unchanged |
| Ophir Asset Management Pty Ltd | 2,118,016 | $25.2M | 2.93% | −266,171−11.2% | Reduced |
| Granahan Investment Management Inc | 2,553,413 | $30.3M | 1.47% | −562,517−18.1% | Reduced |
| Edenbrook Capital, LLC | 2,798,036 | $33.2M | 17.00% | +10,000+0.4% | Added |
| State Street Corp | 3,163,139 | $37.6M | 0.00% | +21,148+0.7% | Added |
| Nine Ten Capital Management LLC | 3,481,283 | $41.4M | 13.14% | +477,700+15.9% | Added |
| Geode Capital Management, LLC | 3,553,790 | $42.2M | 0.00% | +119,728+3.5% | Added |
| Nuveen, LLC | 3,590,025 | $42.6M | 0.01% | +58,917+1.7% | Added |
| Dimensional Fund Advisors LP | 3,983,674 | $47.3M | 0.01% | +367,854+10.2% | Added |
| FMR LLC | 4,507,419 | $53.5M | 0.00% | −2,193,755−32.7% | Reduced |
| American Century Companies Inc | 4,626,816 | $55.0M | 0.03% | −660,112−12.5% | Reduced |
| Boston Partners | 4,719,863 | $56.1M | 0.06% | +610,970+14.9% | Added |
| Capital Research Global Investors | 5,020,289 | $59.6M | 0.01% | −7,900,000−61.1% | Reduced |
| Vanguard Capital Management LLC | 6,190,403 | $73.5M | 0.00% | +6,190,403 | New |
| Vanguard Portfolio Management LLC | 7,726,205 | $91.8M | 0.00% | +7,726,205 | New |
| Wellington Management Group LLP | 9,191,077 | $109.2M | 0.02% | +561,839+6.5% | Added |
| BlackRock, Inc. | 11,657,496 | $138.5M | 0.00% | +64,247+0.6% | Added |
| Stephens Investment Management Group LLC | 0 | $0 | 0.00% | −1,128,578−100.0% | Sold out |
| Frontier Capital Management Co LLC | 0 | $0 | 0.00% | −944,701−100.0% | Sold out |
| J. Goldman & Co LP | 0 | $0 | 0.00% | −782,837−100.0% | Sold out |