Who owns MGNI
294 institutions reported holding MGNI for 2026Q1, together 88% of the company, fewer than the 302 a quarter earlier.
294
Institutions reporting a position · as of 2026Q1 · down from 302 the quarter before
- Shares held by institutions
- 131.0M
Shares held by institutions · 88% of the company · long US equity positions only, as reported on Form 13F
- Reported value
- $1.56B
Reported value · at 2026-03-31 prices, not today's
- Top 5 holders
- 31%
Top 5 holders · of the whole company, between five filers
Details›
- Reporting quarter2026-03-31
- 2026Q1
- Quarters on record
- 24
- New positions
- 44
- Positions exited
- 58
- Added to
- 108
- Reduced
- 74
- Top 10 holdersof the company
- 45%
| Quarter | Filers | Shares | Reported value |
|---|---|---|---|
| 2026Q1 | 294 | 131.0M | $1.56B |
| 2025Q4 | 302 | 136.7M | $2.22B |
| 2025Q3 | 315 | 137.7M | $3.00B |
| 2025Q2 | 285 | 146.9M | $3.54B |
| 2025Q1 | 290 | 132.6M | $1.51B |
| 2024Q4 | 285 | 123.2M | $1.96B |
| 2024Q3 | 279 | 119.6M | $1.65B |
| 2024Q2 | 268 | 104.3M | $1.39B |
| 2024Q1 | 229 | 102.1M | $1.10B |
| 2023Q4 | 215 | 102.6M | $958M |
| 2023Q3 | 212 | 103.5M | $780M |
| 2023Q2 | 222 | 101.7M | $1.39B |
| 2023Q1 | 220 | 96.4M | $892M |
| 2022Q4 | 230 | 93.3M | $988M |
| 2022Q3 | 216 | 103.3M | $679M |
| 2022Q2 | 228 | 88.0M | $781M |
| Holder | Shares | % of company | Value |
|---|---|---|---|
| VANGUARD GROUP INC | 15.1M | 10% | $180M |
| BlackRock Inc. | 11.7M | 7.9% | $138M |
| WELLINGTON MANAGEMENT GROUP LLP | 9.2M | 6.2% | $109M |
| Capital Research Global Investors | 5.0M | 3.4% | $60M |
| Robeco Investment Management, Inc. | 4.7M | 3.2% | $56M |
| AMERICAN CENTURY COMPANIES INC | 4.6M | 3.1% | $55M |
| FMR LLC | 4.5M | 3.0% | $54M |
| DIMENSIONAL FUND ADVISORS LP | 4.0M | 2.7% | $47M |
| Nuveen Asset Management, LLC | 3.6M | 2.4% | $43M |
| GEODE CAPITAL MANAGEMENT LLC | 3.6M | 2.4% | $42M |
SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.
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