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 |
|---|---|---|---|---|---|
| Penn Capital Management Co Inc | 0 | $0 | 0.00% | −694,766−100.0% | Sold out |
| Apis Capital Advisors, LLC | 0 | $0 | 0.00% | −604,000−100.0% | Sold out |
| Pillsbury Lake Capital LLC | 0 | $0 | 0.00% | −583,644−100.0% | Sold out |
| Bank of Montreal | 0 | $0 | 0.00% | −276,273−100.0% | Sold out |
| AYAL Capital Advisors Ltd | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| First Trust Advisors LP | 0 | $0 | 0.00% | −199,872−100.0% | Sold out |
| Bridgewater Associates, LP | 0 | $0 | 0.00% | −145,187−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −117,842−100.0% | Sold out |
| Calamos Advisors LLC | 0 | $0 | 0.00% | −113,457−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −96,163−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −62,277−100.0% | Sold out |
| Weiss Asset Management LP | 0 | $0 | 0.00% | −58,484−100.0% | Sold out |
| Laurion Capital Management LP | 0 | $0 | 0.00% | −50,869−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −41,137−100.0% | Sold out |
| Thrivent Financial for Lutherans | 0 | $0 | 0.00% | −32,744−100.0% | Sold out |
| Nippon Life Global Investors Americas, Inc. | 0 | $0 | 0.00% | −32,180−100.0% | Sold out |
| Sender Co & Partners, Inc. | 0 | $0 | 0.00% | −29,905−100.0% | Sold out |
| Brinker Capital Investments, LLC | 0 | $0 | 0.00% | −29,372−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −28,194−100.0% | Sold out |
| Freestone Grove Partners LP | 0 | $0 | 0.00% | −27,761−100.0% | Sold out |
| Antipodes Partners Ltd | 0 | $0 | 0.00% | −24,831−100.0% | Sold out |
| Outlook Wealth Advisors, LLC | 0 | $0 | 0.00% | −24,764−100.0% | Sold out |
| Griffin Asset Management, Inc. | 0 | $0 | 0.00% | −19,935−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −19,153−100.0% | Sold out |
| ARS Investment Partners, LLC | 0 | $0 | 0.00% | −14,000−100.0% | Sold out |
| Florida Financial Advisors, LLC | 0 | $0 | 0.00% | −12,686−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −11,987−100.0% | Sold out |
| Concurrent Investment Advisors, LLC | 0 | $0 | 0.00% | −11,270−100.0% | Sold out |
| Harbour Capital Advisors, LLC | 0 | $0 | 0.00% | −11,000−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −10,800−100.0% | Sold out |
| FNY Investment Advisers, LLC | 0 | $0 | 0.00% | −4,775−100.0% | Sold out |
| State of Wyoming | 0 | $0 | 0.00% | −4,600−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −4,400−100.0% | Sold out |
| AdvisorNet Financial, Inc | 0 | $0 | 0.00% | −3,500−100.0% | Sold out |
| Smithfield Trust Co | 0 | $0 | 0.00% | −3,240−100.0% | Sold out |
| Strategic Advocates LLC | 0 | $0 | 0.00% | −1,920−100.0% | Sold out |
| Torren Management, LLC | 0 | $0 | 0.00% | −541−100.0% | Sold out |
| Raleigh Capital Management Inc. | 0 | $0 | 0.00% | −385−100.0% | Sold out |
| Lloyd Advisory Services, LLC. | 0 | $0 | 0.00% | −301−100.0% | Sold out |
| MTM Investment Management, LLC | 0 | $0 | 0.00% | −275−100.0% | Sold out |
| Flagship Harbor Advisors, LLC | 0 | $0 | 0.00% | −175−100.0% | Sold out |
| Richard W. Paul & Associates, LLC | 0 | $0 | 0.00% | −147−100.0% | Sold out |
| Bay Harbor Wealth Management, LLC | 0 | $0 | 0.00% | −108−100.0% | Sold out |
| Westside Investment Management, Inc. | 0 | $0 | 0.00% | −45−100.0% | Sold out |
| Basecamp Wealth Advisors LLC | 0 | $0 | 0.00% | −41−100.0% | Sold out |
| Bare Financial Services, Inc | 0 | $0 | 0.00% | −34−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −33−100.0% | Sold out |
| Bell Investment Advisors, Inc | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| UMA Financial Services, Inc. | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| Atlantic Private Wealth, LLC | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| HFM Investment Advisors, LLC | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| ORG Partners LLC | – | – | – | – | Not filed |