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 25 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 |
|---|---|---|---|---|---|
| Concurrent Investment Advisors, LLC | 11,270 | $182.9K | 0.00% | +11,270 | New |
| Ameritas Investment Partners, Inc. | 11,700 | $189.9K | 0.01% | 00.0% | Unchanged |
| Bayesian Capital Management, LP | 11,987 | $194.5K | 0.45% | +11,987 | New |
| OP Asset Management Ltd | 12,621 | $204.8K | 0.00% | +4,391+53.4% | Added |
| Florida Financial Advisors, LLC | 12,686 | $205.9K | 0.06% | +12,686 | New |
| HCR Wealth Advisors | 13,000 | $211.0K | 0.02% | 00.0% | Unchanged |
| Amundi | 13,053 | $211.8K | 0.00% | +13,053 | New |
| Ensign Peak Advisors, Inc | 13,658 | $221.7K | 0.00% | −20,250−59.7% | Reduced |
| ARS Investment Partners, LLC | 14,000 | $227.2K | 0.01% | +2,000+16.7% | Added |
| Cambridge Investment Research Advisors, Inc. | 14,056 | $228.0K | 0.00% | +1,499+11.9% | Added |
| Ledgewood Wealth Advisors, LLC | 14,097 | $228.8K | 0.13% | 00.0% | Unchanged |
| Woodmont Investment Counsel LLC | 14,250 | $231.3K | 0.01% | 00.0% | Unchanged |
| Winthrop Advisory Group LLC | 14,520 | $235.7K | 0.02% | +440+3.1% | Added |
| Public Employees Retirement Association of Colorado | 14,986 | $243.0K | 0.00% | 00.0% | Unchanged |
| Great West Life Assurance Co | 15,140 | $246.0K | 0.00% | −29,412−66.0% | Reduced |
| Captrust Financial Advisors | 15,329 | $248.8K | 0.00% | +2,081+15.7% | Added |
| Holocene Advisors, LP | 15,562 | $252.6K | 0.00% | +15,562 | New |
| Caption Management, LLC | 16,200 | $262.9K | 0.01% | +16,200 | New |
| Gsa Capital Partners LLP | 16,523 | $268.0K | 0.02% | +16,523 | New |
| Advisor Group Holdings, Inc. | 16,529 | $268.3K | 0.00% | −30,678−65.0% | Reduced |
| Vident Advisory, LLC | 16,723 | $271.4K | 0.00% | +102+0.6% | Added |
| Verdence Capital Advisors LLC | 16,993 | $275.8K | 0.02% | −10,654−38.5% | Reduced |
| Centiva Capital, LP | 17,000 | $275.9K | 0.02% | +17,000 | New |
| M&T Bank Corp | 17,241 | $279.4K | 0.00% | +4,491+35.2% | Added |
| Northwest & Ethical Investments L.P. | 17,639 | $290.3K | 0.01% | −1,921−9.8% | Reduced |
| Canada Pension Plan Investment Board | 18,452 | $299.5K | 0.00% | +15,652+559.0% | Added |
| Quest Partners LLC | 19,153 | $310.9K | 0.02% | +5,662+42.0% | Added |
| Griffin Asset Management, Inc. | 19,935 | $323.5K | 0.04% | 00.0% | Unchanged |
| Brown Advisory Inc | 21,263 | $345.1K | 0.00% | −43,418−67.1% | Reduced |
| Truist Financial Corp | 21,284 | $345.4K | 0.00% | −1,838−7.9% | Reduced |
| Pictet Asset Management Holding SA | 22,641 | $367.5K | 0.00% | 00.0% | Unchanged |
| Millennium Management LLC | 23,744 | $385.4K | 0.00% | −652,605−96.5% | Reduced |
| Pinnacle Wealth Management Advisory Group, LLC | 24,443 | $396.7K | 0.03% | +24,443 | New |
| Outlook Wealth Advisors, LLC | 24,764 | $401.9K | 0.09% | +4,498+22.2% | Added |
| Antipodes Partners Ltd | 24,831 | $403.0K | 0.01% | +24,831 | New |
| Walleye Capital LLC | 25,557 | $414.8K | 0.00% | +25,557 | New |
| ProShare Advisors LLC | 25,583 | $415.2K | 0.00% | +1,637+6.8% | Added |
| Ronald Blue Trust, Inc. | 27,474 | $445.9K | 0.01% | +27,474 | New |
| Freestone Grove Partners LP | 27,761 | $450.6K | 0.00% | +27,761 | New |
| Edgestream Partners, L.P. | 28,194 | $457.6K | 0.01% | +28,194 | New |
| Marshall Wace, LLP | 28,763 | $466.8K | 0.00% | +16,115+127.4% | Added |
| Brinker Capital Investments, LLC | 29,372 | $476.7K | 0.00% | +29,372 | New |
| Sender Co & Partners, Inc. | 29,905 | $485.4K | 0.28% | +29,905 | New |
| State of Alaska, Department of Revenue | 30,334 | $492.0K | 0.01% | +30,334 | New |
| KLP Kapitalforvaltning AS | 30,500 | $495.0K | 0.00% | +1,400+4.8% | Added |
| Creative Planning | 30,735 | $498.8K | 0.00% | +8,842+40.4% | Added |
| Gabelli Funds LLC | 30,820 | $500.2K | 0.00% | +20,000+184.8% | Added |
| Penbrook Management LLC | 31,115 | $505.0K | 0.35% | +2,695+9.5% | Added |
| Fulton Bank, N.A. | 31,395 | $509.5K | 0.02% | −242−0.8% | Reduced |
| Buckland Partners Management Co LLC | 31,446 | $510.4K | 0.28% | +31,446 | New |
| BNP Paribas Arbitrage, SA | 31,632 | $513.4K | 0.00% | −4,609−12.7% | Reduced |
| Nippon Life Global Investors Americas, Inc. | 32,180 | $522.3K | 0.02% | −88,170−73.3% | Reduced |
| Thrivent Financial for Lutherans | 32,744 | $531.0K | 0.00% | −6,902−17.4% | Reduced |
| Cetera Investment Advisers | 34,297 | $556.6K | 0.00% | +627+1.9% | Added |
| Handelsbanken Fonder AB | 34,300 | $557.0K | 0.00% | +4,200+14.0% | Added |
| Tudor Investment Corp Et Al | 34,674 | $562.8K | 0.00% | −414,435−92.3% | Reduced |
| STRS Ohio | 35,200 | $571.3K | 0.00% | −8,700−19.8% | Reduced |
| Allspring Global Investments Holdings, LLC | 37,462 | $601.6K | 0.00% | +3,276+9.6% | Added |
| Police & Firemen's Retirement System of New Jersey | 37,105 | $602.2K | 0.01% | −2,193−5.6% | Reduced |
| State Board of Administration of Florida Retirement System | 38,231 | $620.5K | 0.00% | 00.0% | Unchanged |
| Greenwood Capital Associates LLC | 38,620 | $626.8K | 0.07% | +12,277+46.6% | Added |
| Arizona State Retirement System | 39,617 | $643.0K | 0.00% | −2,123−5.1% | Reduced |
| Engineers Gate Manager LP | 41,137 | $667.7K | 0.01% | +41,137 | New |
| Los Angeles Capital Management LLC | 40,084 | $693.9K | 0.00% | +40,084 | New |
| RE Advisers Corp | 43,900 | $712.5K | 0.02% | 00.0% | Unchanged |
| Gamco Investors, Inc. Et Al | 44,479 | $721.9K | 0.01% | −11,990−21.2% | Reduced |
| Squarepoint Ops LLC | 45,438 | $737.5K | 0.00% | −121,031−72.7% | Reduced |
| XTX Topco Ltd | 46,663 | $757.3K | 0.02% | −34,782−42.7% | Reduced |
| Diametric Capital, LP | 49,704 | $806.7K | 0.22% | +28,082+129.9% | Added |
| Nano Cap New Millennium Growth Fund L P | 50,000 | $811.5K | 0.69% | +50,000 | New |
| Laurion Capital Management LP | 50,869 | $825.6K | 0.06% | +50,869 | New |
| Citigroup Inc | 51,424 | $834.6K | 0.00% | −111,919−68.5% | Reduced |
| Pinnacle Associates Ltd | 51,718 | $839.4K | 0.01% | +5,893+12.9% | Added |
| Quantinno Capital Management LP | 52,447 | $851.2K | 0.00% | +28,871+122.5% | Added |
| HSBC Holdings PLC | 52,784 | $857.2K | 0.00% | +10,455+24.7% | Added |
| Walleye Trading LLC | 52,867 | $858.0K | 0.01% | +35,587+205.9% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 53,368 | $866.2K | 0.00% | +4,497+9.2% | Added |
| Parallax Volatility Advisers, L.P. | 54,658 | $887.1K | 0.03% | −76,025−58.2% | Reduced |
| Dba Trading, LLC | 55,000 | $892.6K | 0.89% | +55,000 | New |
| Advisory Services Network, LLC | 56,527 | $917.4K | 0.01% | −7,086−11.1% | Reduced |
| Janus Henderson Group PLC | 58,423 | $948.5K | 0.00% | 00.0% | Unchanged |
| Weiss Asset Management LP | 58,484 | $949.2K | 0.01% | +58,484 | New |
| Stifel Financial Corp | 58,782 | $954.0K | 0.00% | −349−0.6% | Reduced |
| SG Americas Securities, LLC | 59,245 | $962.0K | 0.00% | +17,652+42.4% | Added |
| QVT Financial LP | 61,293 | $994.8K | 0.09% | +61,293 | New |
| Verition Fund Management LLC | 62,277 | $1.01M | 0.01% | −26,019−29.5% | Reduced |
| Royal Bank of Canada | 62,313 | $1.01M | 0.00% | +18,623+42.6% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 65,003 | $1.05M | 0.00% | −60−0.1% | Reduced |
| Manufacturers Life Insurance Company, The | 65,586 | $1.06M | 0.00% | −1,540−2.3% | Reduced |
| Intech Investment Management LLC | 66,235 | $1.07M | 0.01% | +7,031+11.9% | Added |
| Cardinal Point Capital Management, ULC | 68,525 | $1.11M | 0.07% | +31,425+84.7% | Added |
| Steinberganna Wealth Management | 69,024 | $1.12M | 0.52% | 00.0% | Unchanged |
| Teachers Retirement System of the State of Kentucky | 76,813 | $1.25M | 0.01% | +51,612+204.8% | Added |
| MetLife Investment Management | 78,025 | $1.27M | 0.01% | −3,475−4.3% | Reduced |
| Radcliffe Capital Management, L.P. | 87,400 | $1.42M | 0.08% | +47,400+118.5% | Added |
| Stephens Inc | 87,412 | $1.42M | 0.02% | +3,944+4.7% | Added |
| Z3 Capital Partners, LLC | 92,150 | $1.50M | 0.36% | +92,150 | New |
| Comerica Bank | 94,556 | $1.53M | 0.01% | −3,601−3.7% | Reduced |
| Magnetar Financial LLC | 96,163 | $1.56M | 0.02% | +80,974+533.1% | Added |
| Moody National Bank Trust Division | 96,184 | $1.56M | 0.15% | −101,608−51.4% | Reduced |