Magnite
MGNI
25.24
+0.40
+1.61%
Magnite
US · MGNI
#2360 by market cap
Listed 1970
25.24
+0.40
+1.61%
Live - 5344 symbols - heartbeat 562s ago
· 2026-10-08 07:13
Pre-market
25.05
-0.75%
After-hours
25.22
-0.09%
- Market cap
- 3.62B
- P/E (TTM)i
- 22.95
- P/Bi
- 3.87
- EPSi
- 0.95
- Div yieldi
- 0.00%
- 52W posi
- 90%
Reader sentiment
Are you bullish or bearish on MGNI?
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
Accumulating
- The number of reporting institutions decreased by 2 in the most recent period (2026/Q3).
- Total institutional ownership rose 0.2 percentage points.
Institutional ownership
- Held by institutions
- 101.97% +0.18pp
- Institutions
- 361 -2
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
DivergingInstitutions added shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two are pointing in different directions.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Mutual Fund75.02%
Hedge Fund17.67%
Public Company3.22%
Government Pension Fund2.57%
Private Company2.27%
Individual/Insider1.24%
Insurance Company1.04%
Family Office/Trust0.14%
Top holders as of 2026-06-30
BlackRock
8.86% · 12.71M sh
Vanguard Portfolio Management, LLC
5.72% · 8.20M sh
FMR
5.41% · 7.76M sh
Vanguard Capital Management, LLC
5.03% · 7.21M sh
Wellington Management Group
4.21% · 6.04M sh
Dimensional Fund Advisors
3.67% · 5.26M sh
Boston Partners Global Investors, Inc.
3.50% · 5.01M sh
American Century Investment Management
3.22% · 4.62M sh
Capital Research
2.70% · 3.87M sh
Geode Capital Management, LLC
2.64% · 3.79M sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
50 filings tracked · 2 buys · 47 sells
| Name | Role | Stake |
|---|---|---|
| Rachel Lam | Independent Director | 0.15% |
| Michael Barrett | Chief Executive Officer | 0.13% |
| Katie Evans | Chief Operating Officer | 0.13% |
| Adam Soroca | Chief Product Officer | 0.12% |
| David Day | Chief Financial Officer | 0.12% |
| Paul Caine | Non-Executive Chairperson | 0.09% |
| Sarah Harden | Independent Director | 0.07% |
| Aaron Saltz | Chief Legal Officer | 0.07% |
| James Rossman | Independent Director | 0.07% |
| David Buonasera | Chief Technology Officer | 0.06% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-09-30 | Brian Gephart | Chief Accounting Officer | Other Acquisition | +64,682 | -- |
| 2026-09-30 | Haas Sullivan | Chief Accounting Officer | Other Acquisition | +24,641 | -- |
| 2026-09-30 | Haas Sullivan | Chief Accounting Officer | Initial Statement of Beneficial | 0 | -- |
| 2026-09-16 | Paul Caine | Non-Executive Chairperson | Automatic Disposition | -7,500 | $26.50 |
| 2026-09-16 | Douglas Knopper | Independent Director | Automatic Disposition | -37,337 | $26.28 |
| 2026-09-13 | Robert Spillane | Independent Director | Derivative Exercise and Sale | -10,363 | $5.17–23.76 |
| 2026-09-13 | David Buonasera | Chief Technology Officer | Automatic Disposition | -1,165 | $24.00 |
| 2026-09-10 | Katie Evans | Chief Operating Officer | Automatic Disposition | -13,997 | $24.00 |
| 2026-09-09 | Paul Caine | Non-Executive Chairperson | Automatic Disposition | -5,000 | $23.53 |
| 2026-09-09 | Aaron Saltz | Chief Legal Officer | Automatic Disposition | -40,000 | $23.41 |
| 2026-09-08 | Katie Evans | Chief Operating Officer | Automatic Disposition | -29,839 | $23.46–23.63 |
| 2026-09-07 | Katie Evans | Chief Operating Officer | Derivative Exercise and Sale | -13,546 | $5.16–23.63 |
| 2026-09-01 | David Buonasera | Chief Technology Officer | Open Market Disposition | -6,414 | $23.42–25.00 |
| 2026-09-01 | David Buonasera | Chief Technology Officer | Intent to Sell (Form 144) | -1,043 | $25.00 |
| 2026-08-31 | David Buonasera | Chief Technology Officer | Intent to Sell (Form 144) | -5,371 | $23.42 |
| 2026-08-27 | Sarah Harden | Independent Director | Automatic Disposition | -48,986 | $23.31–24.00 |
| 2026-08-17 | Sean Buckley | Chief Revenue Officer | Automatic Disposition | -11,030 | $24.31–25.00 |
| 2026-08-17 | Sean Buckley | Chief Revenue Officer | Intent to Sell (Form 144) | -2,759 | $24.19 |
| 2026-08-16 | Sean Buckley | Chief Revenue Officer | Intent to Sell (Form 144) | -8,271 | $24.73 |
| 2026-08-14 | Michael Barrett | Chief Executive Officer | Sale to Issuer | -10,404 | $24.73 |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-08 07:13:13 · For reference only, not investment advice and not tailored to your situation.