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, Q2 2025
Institutional positions in Magnite, Inc. as of Jun 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
- 287
- −4 vs. Q1 2025
- Shares held
- 147.0M
- +14.1M (+10.6%) vs. Q1 2025
- Total value
- $3.54B
- +$2.03B (+133.7%) vs. Q1 2025
- New holders
- 53
- 99 more added
- Sold out
- 57
- 99 more reduced
2 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Magnite, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −77,223−100.0% | Sold out |
| CIBC World Markets Inc. | 0 | $0 | 0.00% | −65,543−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −61,638−100.0% | Sold out |
| IMC-Chicago, LLC | 0 | $0 | 0.00% | −39,631−100.0% | Sold out |
| Sanctuary Advisors, LLC | 0 | $0 | 0.00% | −36,998−100.0% | Sold out |
| Oppenheimer & Co Inc | 0 | $0 | 0.00% | −27,925−100.0% | Sold out |
| Brown Advisory Inc | 0 | $0 | 0.00% | −25,409−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −23,901−100.0% | Sold out |
| Jacobs Levy Equity Management, Inc | 0 | $0 | 0.00% | −19,634−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −19,092−100.0% | Sold out |
| Bayforest Capital Ltd | 0 | $0 | 0.00% | −17,835−100.0% | Sold out |
| Contravisory Investment Management, Inc. | 0 | $0 | 0.00% | −16,932−100.0% | Sold out |
| CenterStar Asset Management, LLC | 0 | $0 | 0.00% | −16,800−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −16,375−100.0% | Sold out |
| Options Solutions, LLC | 0 | $0 | 0.00% | −16,287−100.0% | Sold out |
| Kapitalo Investimentos Ltda | 0 | $0 | 0.00% | −15,975−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −13,535−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −13,468−100.0% | Sold out |
| Patriot Financial Group Insurance Agency, LLC | 0 | $0 | 0.00% | −11,195−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −11,182−100.0% | Sold out |
| Avantax Advisory Services, Inc. | 0 | $0 | 0.00% | −10,871−100.0% | Sold out |
| Intrust Bank NA | 0 | $0 | 0.00% | −10,444−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −7,220−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −1,872−100.0% | Sold out |
| Clear Street Markets LLC | 0 | $0 | 0.00% | −1,364−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −1,028−100.0% | Sold out |
| Y.D. More Investments Ltd | 0 | $0 | 0.00% | −800−100.0% | Sold out |
| Coldstream Capital Management Inc | 0 | $0 | 0.00% | −793−100.0% | Sold out |
| Ronald Blue Trust, Inc. | 0 | $0 | 0.00% | −609−100.0% | Sold out |
| Heck Capital Advisors, LLC | 0 | $0 | 0.00% | −592−100.0% | Sold out |
| Boston Private Wealth LLC | 0 | $0 | 0.00% | −508−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −454−100.0% | Sold out |
| CoreCap Advisors, LLC | 0 | $0 | 0.00% | −147−100.0% | Sold out |
| Massmutual Trust Co FSB | 0 | $0 | 0.00% | −92−100.0% | Sold out |
| GWM Advisors LLC | 0 | $0 | 0.00% | −87−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −86−100.0% | Sold out |
| First Horizon Advisors, Inc. | 0 | $0 | 0.00% | −78−100.0% | Sold out |
| National Bank of Canada | 0 | $0 | 0.00% | −69−100.0% | Sold out |
| Stephens Consulting, LLC | 0 | $0 | 0.00% | −60−100.0% | Sold out |
| Hexagon Capital Partners LLC | 0 | $0 | 0.00% | −46−100.0% | Sold out |
| Bell Investment Advisors, Inc | 0 | $0 | 0.00% | −40−100.0% | Sold out |
| WealthTrak Capital Management LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Runnymede Capital Advisors, Inc. | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| TFC Financial Management | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Orion Portfolio Solutions, LLC | – | – | – | – | Not filed |
| Lindbrook Capital, LLC | – | – | – | – | Not filed |