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, 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 |
|---|---|---|---|---|---|
| Calamos Advisors LLC | 113,457 | $1.84M | 0.01% | +61,672+119.1% | Added |
| Franklin Resources Inc | 108,970 | $1.77M | 0.00% | −8,514−7.2% | Reduced |
| Cerity Partners LLC | 100,788 | $1.64M | 0.00% | +235+0.2% | Added |
| AQR Capital Management LLC | 97,535 | $1.58M | 0.00% | +49,464+102.9% | Added |
| Moody National Bank Trust Division | 96,184 | $1.56M | 0.15% | −101,608−51.4% | Reduced |
| Magnetar Financial LLC | 96,163 | $1.56M | 0.02% | +80,974+533.1% | Added |
| Comerica Bank | 94,556 | $1.53M | 0.01% | −3,601−3.7% | Reduced |
| Z3 Capital Partners, LLC | 92,150 | $1.50M | 0.36% | +92,150 | New |
| Stephens Inc | 87,412 | $1.42M | 0.02% | +3,944+4.7% | Added |
| Radcliffe Capital Management, L.P. | 87,400 | $1.42M | 0.08% | +47,400+118.5% | Added |
| MetLife Investment Management | 78,025 | $1.27M | 0.01% | −3,475−4.3% | Reduced |
| Teachers Retirement System of the State of Kentucky | 76,813 | $1.25M | 0.01% | +51,612+204.8% | Added |
| Steinberganna Wealth Management | 69,024 | $1.12M | 0.52% | 00.0% | Unchanged |
| Cardinal Point Capital Management, ULC | 68,525 | $1.11M | 0.07% | +31,425+84.7% | Added |
| Intech Investment Management LLC | 66,235 | $1.07M | 0.01% | +7,031+11.9% | Added |
| Manufacturers Life Insurance Company, The | 65,586 | $1.06M | 0.00% | −1,540−2.3% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 65,003 | $1.05M | 0.00% | −60−0.1% | Reduced |
| Royal Bank of Canada | 62,313 | $1.01M | 0.00% | +18,623+42.6% | Added |
| Verition Fund Management LLC | 62,277 | $1.01M | 0.01% | −26,019−29.5% | Reduced |
| QVT Financial LP | 61,293 | $994.8K | 0.09% | +61,293 | New |
| SG Americas Securities, LLC | 59,245 | $962.0K | 0.00% | +17,652+42.4% | Added |
| Stifel Financial Corp | 58,782 | $954.0K | 0.00% | −349−0.6% | Reduced |
| Weiss Asset Management LP | 58,484 | $949.2K | 0.01% | +58,484 | New |
| Janus Henderson Group PLC | 58,423 | $948.5K | 0.00% | 00.0% | Unchanged |
| Advisory Services Network, LLC | 56,527 | $917.4K | 0.01% | −7,086−11.1% | Reduced |
| Dba Trading, LLC | 55,000 | $892.6K | 0.89% | +55,000 | New |
| Parallax Volatility Advisers, L.P. | 54,658 | $887.1K | 0.03% | −76,025−58.2% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 53,368 | $866.2K | 0.00% | +4,497+9.2% | Added |
| Walleye Trading LLC | 52,867 | $858.0K | 0.01% | +35,587+205.9% | Added |
| HSBC Holdings PLC | 52,784 | $857.2K | 0.00% | +10,455+24.7% | Added |
| Quantinno Capital Management LP | 52,447 | $851.2K | 0.00% | +28,871+122.5% | Added |
| Pinnacle Associates Ltd | 51,718 | $839.4K | 0.01% | +5,893+12.9% | Added |
| Citigroup Inc | 51,424 | $834.6K | 0.00% | −111,919−68.5% | Reduced |
| Laurion Capital Management LP | 50,869 | $825.6K | 0.06% | +50,869 | New |
| Nano Cap New Millennium Growth Fund L P | 50,000 | $811.5K | 0.69% | +50,000 | New |
| Diametric Capital, LP | 49,704 | $806.7K | 0.22% | +28,082+129.9% | Added |
| XTX Topco Ltd | 46,663 | $757.3K | 0.02% | −34,782−42.7% | Reduced |
| Squarepoint Ops LLC | 45,438 | $737.5K | 0.00% | −121,031−72.7% | Reduced |
| Gamco Investors, Inc. Et Al | 44,479 | $721.9K | 0.01% | −11,990−21.2% | Reduced |
| RE Advisers Corp | 43,900 | $712.5K | 0.02% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 40,084 | $693.9K | 0.00% | +40,084 | New |
| Engineers Gate Manager LP | 41,137 | $667.7K | 0.01% | +41,137 | New |
| Arizona State Retirement System | 39,617 | $643.0K | 0.00% | −2,123−5.1% | Reduced |
| Greenwood Capital Associates LLC | 38,620 | $626.8K | 0.07% | +12,277+46.6% | Added |
| State Board of Administration of Florida Retirement System | 38,231 | $620.5K | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 37,105 | $602.2K | 0.01% | −2,193−5.6% | Reduced |
| Allspring Global Investments Holdings, LLC | 37,462 | $601.6K | 0.00% | +3,276+9.6% | Added |
| STRS Ohio | 35,200 | $571.3K | 0.00% | −8,700−19.8% | Reduced |
| Tudor Investment Corp Et Al | 34,674 | $562.8K | 0.00% | −414,435−92.3% | Reduced |
| Handelsbanken Fonder AB | 34,300 | $557.0K | 0.00% | +4,200+14.0% | Added |
| Cetera Investment Advisers | 34,297 | $556.6K | 0.00% | +627+1.9% | Added |
| Thrivent Financial for Lutherans | 32,744 | $531.0K | 0.00% | −6,902−17.4% | Reduced |
| Nippon Life Global Investors Americas, Inc. | 32,180 | $522.3K | 0.02% | −88,170−73.3% | Reduced |
| BNP Paribas Arbitrage, SA | 31,632 | $513.4K | 0.00% | −4,609−12.7% | Reduced |
| Buckland Partners Management Co LLC | 31,446 | $510.4K | 0.28% | +31,446 | New |
| Fulton Bank, N.A. | 31,395 | $509.5K | 0.02% | −242−0.8% | Reduced |
| Penbrook Management LLC | 31,115 | $505.0K | 0.35% | +2,695+9.5% | Added |
| Gabelli Funds LLC | 30,820 | $500.2K | 0.00% | +20,000+184.8% | Added |
| Creative Planning | 30,735 | $498.8K | 0.00% | +8,842+40.4% | Added |
| KLP Kapitalforvaltning AS | 30,500 | $495.0K | 0.00% | +1,400+4.8% | Added |
| State of Alaska, Department of Revenue | 30,334 | $492.0K | 0.01% | +30,334 | New |
| Sender Co & Partners, Inc. | 29,905 | $485.4K | 0.28% | +29,905 | New |
| Brinker Capital Investments, LLC | 29,372 | $476.7K | 0.00% | +29,372 | New |
| Marshall Wace, LLP | 28,763 | $466.8K | 0.00% | +16,115+127.4% | Added |
| Edgestream Partners, L.P. | 28,194 | $457.6K | 0.01% | +28,194 | New |
| Freestone Grove Partners LP | 27,761 | $450.6K | 0.00% | +27,761 | New |
| Ronald Blue Trust, Inc. | 27,474 | $445.9K | 0.01% | +27,474 | New |
| ProShare Advisors LLC | 25,583 | $415.2K | 0.00% | +1,637+6.8% | Added |
| Walleye Capital LLC | 25,557 | $414.8K | 0.00% | +25,557 | New |
| Antipodes Partners Ltd | 24,831 | $403.0K | 0.01% | +24,831 | New |
| Outlook Wealth Advisors, LLC | 24,764 | $401.9K | 0.09% | +4,498+22.2% | Added |
| Pinnacle Wealth Management Advisory Group, LLC | 24,443 | $396.7K | 0.03% | +24,443 | New |
| Millennium Management LLC | 23,744 | $385.4K | 0.00% | −652,605−96.5% | Reduced |
| Pictet Asset Management Holding SA | 22,641 | $367.5K | 0.00% | 00.0% | Unchanged |
| Truist Financial Corp | 21,284 | $345.4K | 0.00% | −1,838−7.9% | Reduced |
| Brown Advisory Inc | 21,263 | $345.1K | 0.00% | −43,418−67.1% | Reduced |
| Griffin Asset Management, Inc. | 19,935 | $323.5K | 0.04% | 00.0% | Unchanged |
| Quest Partners LLC | 19,153 | $310.9K | 0.02% | +5,662+42.0% | Added |
| Canada Pension Plan Investment Board | 18,452 | $299.5K | 0.00% | +15,652+559.0% | Added |
| Northwest & Ethical Investments L.P. | 17,639 | $290.3K | 0.01% | −1,921−9.8% | Reduced |
| M&T Bank Corp | 17,241 | $279.4K | 0.00% | +4,491+35.2% | Added |
| Centiva Capital, LP | 17,000 | $275.9K | 0.02% | +17,000 | New |
| Verdence Capital Advisors LLC | 16,993 | $275.8K | 0.02% | −10,654−38.5% | Reduced |
| Vident Advisory, LLC | 16,723 | $271.4K | 0.00% | +102+0.6% | Added |
| Advisor Group Holdings, Inc. | 16,529 | $268.3K | 0.00% | −30,678−65.0% | Reduced |
| Gsa Capital Partners LLP | 16,523 | $268.0K | 0.02% | +16,523 | New |
| Caption Management, LLC | 16,200 | $262.9K | 0.01% | +16,200 | New |
| Holocene Advisors, LP | 15,562 | $252.6K | 0.00% | +15,562 | New |
| Captrust Financial Advisors | 15,329 | $248.8K | 0.00% | +2,081+15.7% | Added |
| Great West Life Assurance Co | 15,140 | $246.0K | 0.00% | −29,412−66.0% | Reduced |
| Public Employees Retirement Association of Colorado | 14,986 | $243.0K | 0.00% | 00.0% | Unchanged |
| Winthrop Advisory Group LLC | 14,520 | $235.7K | 0.02% | +440+3.1% | Added |
| Woodmont Investment Counsel LLC | 14,250 | $231.3K | 0.01% | 00.0% | Unchanged |
| Ledgewood Wealth Advisors, LLC | 14,097 | $228.8K | 0.13% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 14,056 | $228.0K | 0.00% | +1,499+11.9% | Added |
| ARS Investment Partners, LLC | 14,000 | $227.2K | 0.01% | +2,000+16.7% | Added |
| Ensign Peak Advisors, Inc | 13,658 | $221.7K | 0.00% | −20,250−59.7% | Reduced |
| Amundi | 13,053 | $211.8K | 0.00% | +13,053 | New |
| HCR Wealth Advisors | 13,000 | $211.0K | 0.02% | 00.0% | Unchanged |
| Florida Financial Advisors, LLC | 12,686 | $205.9K | 0.06% | +12,686 | New |