MAGNITE INC (MGNI) Institutional Ownership and Insiders Activity
MAGNITE INC (MGNI) is widely held by institutional investors, with 297 firms reporting positions valued at approximately $2.67B based on SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is the largest disclosed holder, reporting approximately $241.30M in MGNI holdings in its latest filing.
Recent insider activity includes 43 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.
Institutional Holders
297
Total Reported Value
$2.67B
Largest Holder
Blackrock, Inc.
Largest Position
$241.30M
Insider Transactions (90d)
43
Latest Filing Quarter
Q2 2026
New Institutional Positions
51
Funds Exiting Positions
47
Top Institutional Owners
View allInvestorReported Balance
- Blackrock, Inc.$241.30M
- Vanguard Portfolio Management Llc$155.58M
- Fmr Llc$147.27M
- Vanguard Capital Management Llc$118.15M
- Wellington Management Group Llp$114.72M
MGNI News
All news- Manatuck Hill Partners Q2 Activity: Strategic Shifts in Technology and Healthcare
Aug 20, 2026 · valut.ai
- Maestria Partners Q2 Portfolio Activity Report
Aug 9, 2026 · valut.ai
- Kopion Asset Management Portfolio Changes in Q2 2026
Jul 9, 2026 · valut.ai
Related MGNI Institutional Insights:
- MGNI 13F Institutional Holders
- MGNI Top Institutional Shareholders
- MGNI Institutional Ownership Changes
- Communication Services Sector Institutional Ownership
- Communication Services Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Communication Services Stocks By Institutional Investors
- Most Sold Communication Services Stocks By Institutional Investors
- MGNI Insider Trading & SEC Form 4 Activity
- MGNI Articles
- Top Institutional Investor Stock Rankings