Magnite, Inc. (MGNI) Institutional Ownership & Insider Trading
309 institutions reported holding Magnite, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 52 insider trades on Form 4 since 2025-10-01.
Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason
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- Market cap
- 3.3B
- P/E TTM
- —
- Dividend yield
- —
- 52-week
- —
- Next earnings
- 4 Nov, in 11 days
Institutions · all 13F filers
quarter to 30 Jun 2026 · filers in both quarters309 institutions held 99.4% of the shares. Across filers that reported both quarters, shares held changed +8.3%.
Largest moves, shares (millions)
Institutional flow by quarter
net shares added or trimmed, millions · filers in both quarters| Quarter | Holders | Shares held, M | Change | Increased | New | Decreased | Closed |
|---|---|---|---|---|---|---|---|
| Jun 26 | 309 | 143 | +8.3% | 114 | 40 | 80 | 33 |
| Mar 26 | 296 | 131 | -4.8% | 106 | 39 | 73 | 49 |
| Dec 25 | 300 | 137 | -2.2% | 113 | 37 | 83 | 50 |
| Sep 25 | 308 | 139 | -5.3% | 72 | 60 | 115 | 36 |
| Jun 25 | 284 | 147 | +10.6% | 97 | 48 | 93 | 50 |
| Mar 25 | 288 | 133 | +8.1% | 94 | 43 | 88 | 36 |
| Dec 24 | 281 | 123 | +0.7% | 91 | 37 | 86 | 36 |
| Sep 24 | 275 | 119 | +15.8% | 98 | 37 | 60 | 28 |
Magnite, Inc. — questions
- Who owns Magnite, Inc. stock?
- 309 institutions reported Magnite, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: BlackRock, Inc. (8.9%), VANGUARD PORTFOLIO MANAGEMENT LLC (5.7%), FMR LLC (5.4%).
- Are Magnite, Inc. insiders buying or selling?
- 52 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.
Every figure on this page comes from Magnite, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.
How these figures are read: methodology · EquiReason.