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, Q3 2025
Institutional positions in Magnite, Inc. as of Sep 30, 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
- 316
- +31 vs. Q2 2025
- Shares held
- 138.0M
- −8.85M (−6.0%) vs. Q2 2025
- Total value
- $3.00B
- −$536.4M (−15.2%) vs. Q2 2025
- New holders
- 71
- 83 more added
- Sold out
- 40
- 124 more reduced
2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Magnite, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wolverine Trading, LLC | 10,259 | $228.6K | 0.00% | −4,016−28.1% | Reduced |
| O'Shaughnessy Asset Management, LLC | 10,677 | $232.5K | 0.00% | +10,677 | New |
| Tower Research Capital LLC (TRC) | 10,754 | $234.2K | 0.01% | −4,311−28.6% | Reduced |
| Gabelli Funds LLC | 10,820 | $235.7K | 0.00% | 00.0% | Unchanged |
| Cornerstone Wealth Management, LLC | 10,920 | $237.8K | 0.01% | 00.0% | Unchanged |
| Xponance, Inc. | 10,984 | $239.2K | 0.00% | +65+0.6% | Added |
| Blackhill Capital Inc | 11,622 | $253.1K | 0.01% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 11,700 | $254.8K | 0.01% | −2,599−18.2% | Reduced |
| Point72 (DIFC) Ltd | 11,770 | $256.3K | 0.02% | +11,770 | New |
| ARS Investment Partners, LLC | 12,000 | $261.4K | 0.02% | −10,500−46.7% | Reduced |
| HCR Wealth Advisors | 13,000 | $261.6K | 0.03% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 12,557 | $273.0K | 0.00% | −10,801−46.2% | Reduced |
| Marshall Wace, LLP | 12,648 | $275.5K | 0.00% | +12,648 | New |
| M&T Bank Corp | 12,750 | $278.2K | 0.00% | −3,845−23.2% | Reduced |
| Captrust Financial Advisors | 13,248 | $288.5K | 0.00% | −3,337−20.1% | Reduced |
| Quest Partners LLC | 13,491 | $293.8K | 0.02% | +1,044+8.4% | Added |
| Winthrop Advisory Group LLC | 14,080 | $306.7K | 0.03% | +80+0.6% | Added |
| Ledgewood Wealth Advisors, LLC | 14,097 | $307.0K | 0.18% | −5,698−28.8% | Reduced |
| Woodmont Investment Counsel LLC | 14,250 | $310.4K | 0.02% | −50−0.3% | Reduced |
| HighTower Advisors, LLC | 14,780 | $321.9K | 0.00% | +953+6.9% | Added |
| CIBC Bancorp USA Inc. | 14,929 | $325.2K | 0.00% | +14,929 | New |
| Public Employees Retirement Association of Colorado | 14,986 | $326.0K | 0.00% | 00.0% | Unchanged |
| Magnetar Financial LLC | 15,189 | $330.8K | 0.00% | +15,189 | New |
| Numerai GP LLC | 16,327 | $355.6K | 0.05% | +16,327 | New |
| Vident Advisory, LLC | 16,621 | $362.0K | 0.00% | −1,225−6.9% | Reduced |
| Walleye Trading LLC | 17,280 | $376.4K | 0.01% | +17,280 | New |
| Prudential Financial Inc | 18,114 | $394.5K | 0.00% | +155+0.9% | Added |
| Teacher Retirement System of Texas | 18,391 | $400.6K | 0.00% | −3,212−14.9% | Reduced |
| Griffin Asset Management, Inc. | 19,935 | $434.2K | 0.05% | 00.0% | Unchanged |
| Northwest & Ethical Investments L.P. | 19,560 | $435.8K | 0.01% | +10,860+124.8% | Added |
| Outlook Wealth Advisors, LLC | 20,266 | $441.4K | 0.11% | −208−1.0% | Reduced |
| Diametric Capital, LP | 21,622 | $470.9K | 0.17% | −11,537−34.8% | Reduced |
| Creative Planning | 21,893 | $476.8K | 0.00% | +10,762+96.7% | Added |
| Counterpoint Mutual Funds LLC | 22,156 | $482.6K | 0.04% | +22,156 | New |
| Pictet Asset Management Holding SA | 22,641 | $493.1K | 0.00% | 00.0% | Unchanged |
| Pitcairn Co | 22,802 | $496.6K | 0.04% | −3,513−13.3% | Reduced |
| Federated Hermes, Inc. | 23,100 | $503.1K | 0.00% | +23,100 | New |
| Truist Financial Corp | 23,122 | $503.6K | 0.00% | −5,191−18.3% | Reduced |
| Quantinno Capital Management LP | 23,576 | $513.5K | 0.00% | +4,065+20.8% | Added |
| ProShare Advisors LLC | 23,946 | $521.5K | 0.00% | −4,772−16.6% | Reduced |
| Moran Wealth Management, LLC | 25,121 | $547.1K | 0.02% | +25,121 | New |
| Teachers Retirement System of the State of Kentucky | 25,201 | $549.0K | 0.00% | +25,201 | New |
| Verdence Capital Advisors LLC | 27,647 | $555.4K | 0.03% | +1,451+5.5% | Added |
| Greenwood Capital Associates LLC | 26,343 | $573.8K | 0.07% | −13,832−34.4% | Reduced |
| Penbrook Management LLC | 28,420 | $619.0K | 0.43% | 00.0% | Unchanged |
| Bailard, Inc. | 29,079 | $633.3K | 0.01% | +29,079 | New |
| KLP Kapitalforvaltning AS | 29,100 | $633.8K | 0.00% | 00.0% | Unchanged |
| Clear Creek Financial Management, LLC | 30,032 | $654.1K | 0.06% | +5,569+22.8% | Added |
| Handelsbanken Fonder AB | 30,100 | $656.0K | 0.00% | 00.0% | Unchanged |
| TD Asset Management Inc | 30,740 | $669.5K | 0.00% | +30,740 | New |
| Fulton Bank, N.A. | 31,637 | $689.1K | 0.02% | −298−0.9% | Reduced |
| Jain Global LLC | 32,447 | $706.7K | 0.01% | +32,447 | New |
| Cetera Investment Advisers | 33,670 | $733.3K | 0.00% | −5,493−14.0% | Reduced |
| Ensign Peak Advisors, Inc | 33,908 | $738.5K | 0.00% | −24,600−42.0% | Reduced |
| Allspring Global Investments Holdings, LLC | 34,186 | $744.6K | 0.00% | −338−1.0% | Reduced |
| Sierra Summit Advisors LLC | 34,632 | $754.3K | 0.11% | +34,632 | New |
| Legato Capital Management LLC | 35,220 | $767.1K | 0.08% | −35,260−50.0% | Reduced |
| BNP Paribas Arbitrage, SA | 36,241 | $789.3K | 0.00% | +17,687+95.3% | Added |
| Cardinal Point Capital Management, ULC | 37,100 | $808.0K | 0.06% | −12,000−24.4% | Reduced |
| Virtu Financial LLC | 37,311 | $813.0K | 0.05% | +37,311 | New |
| State Board of Administration of Florida Retirement System | 38,231 | $832.7K | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 39,298 | $855.9K | 0.01% | +7,680+24.3% | Added |
| Thrivent Financial for Lutherans | 39,646 | $863.0K | 0.00% | −63,258−61.5% | Reduced |
| Radcliffe Capital Management, L.P. | 40,000 | $871.2K | 0.05% | −10,000−20.0% | Reduced |
| Jennison Associates LLC | 40,431 | $880.6K | 0.00% | +40,431 | New |
| SG Americas Securities, LLC | 41,593 | $906.0K | 0.00% | +215+0.5% | Added |
| Arizona State Retirement System | 41,740 | $909.1K | 0.00% | +70+0.2% | Added |
| HSBC Holdings PLC | 42,329 | $917.4K | 0.00% | +24,289+134.6% | Added |
| Royal Bank of Canada | 43,690 | $951.0K | 0.00% | −3,588−7.6% | Reduced |
| STRS Ohio | 43,900 | $956.1K | 0.00% | +1,700+4.0% | Added |
| RE Advisers Corp | 43,900 | $956.1K | 0.02% | +43,900 | New |
| Great West Life Assurance Co | 44,552 | $992.0K | 0.00% | +1,047+2.4% | Added |
| Pinnacle Associates Ltd | 45,825 | $998.1K | 0.01% | −21,195−31.6% | Reduced |
| Victory Capital Management Inc | 46,301 | $1.01M | 0.00% | +2,902+6.7% | Added |
| Algert Global LLC | 47,270 | $1.03M | 0.02% | +47,270 | New |
| AQR Capital Management LLC | 48,071 | $1.05M | 0.00% | +27,111+129.3% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 48,871 | $1.06M | 0.00% | 00.0% | Unchanged |
| Calamos Advisors LLC | 51,785 | $1.13M | 0.00% | −925−1.8% | Reduced |
| Advisor Group Holdings, Inc. | 47,207 | $1.20M | 0.00% | −4,064−7.9% | Reduced |
| Gamco Investors, Inc. Et Al | 56,469 | $1.23M | 0.01% | −3,114−5.2% | Reduced |
| Janus Henderson Group PLC | 58,423 | $1.27M | 0.00% | 00.0% | Unchanged |
| Boothbay Fund Management, LLC | 58,877 | $1.28M | 0.03% | +14,528+32.8% | Added |
| Stifel Financial Corp | 59,131 | $1.29M | 0.00% | −19,668−25.0% | Reduced |
| Intech Investment Management LLC | 59,204 | $1.29M | 0.01% | −14,167−19.3% | Reduced |
| Ardsley Advisory Partners LP | 60,000 | $1.31M | 0.20% | −310,000−83.8% | Reduced |
| Advisory Services Network, LLC | 63,613 | $1.39M | 0.02% | −1,794−2.7% | Reduced |
| Fox Run Management, L.L.C. | 63,761 | $1.39M | 0.22% | +63,761 | New |
| Brown Advisory Inc | 64,681 | $1.41M | 0.00% | +64,681 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 65,063 | $1.42M | 0.00% | −11,697−15.2% | Reduced |
| Manufacturers Life Insurance Company, The | 67,126 | $1.46M | 0.00% | −535−0.8% | Reduced |
| Steinberganna Wealth Management | 69,024 | $1.50M | 0.71% | +69,024 | New |
| Dark Forest Capital Management LP | 69,509 | $1.51M | 0.06% | +20,205+41.0% | Added |
| Cubist Systematic Strategies, LLC | 71,251 | $1.55M | 0.02% | +71,251 | New |
| CenterBook Partners LP | 72,786 | $1.59M | 0.08% | −19,480−21.1% | Reduced |
| SEI Investments Co | 74,983 | $1.63M | 0.00% | −7,133−8.7% | Reduced |
| XTX Topco Ltd | 81,445 | $1.77M | 0.09% | +81,445 | New |
| MetLife Investment Management | 81,500 | $1.78M | 0.01% | −2,041−2.4% | Reduced |
| Stephens Inc | 83,468 | $1.82M | 0.02% | +517+0.6% | Added |
| Verition Fund Management LLC | 88,296 | $1.92M | 0.01% | −507,199−85.2% | Reduced |
| State of New Jersey Common Pension Fund D | 94,452 | $2.06M | 0.01% | +94,452 | New |