MGNI
MAGNITE (MGNI)
NASDAQ
$20.00-$0.20 (-0.99%)
Price as of Jul 14, 2026 7:59 PM EDT
  • $2.9B
    Market Cap
  • -14.23%
    1-Year Change
  • Advertising Agencies
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD GROUP INC
10.34%
14.8M
+148,198 (+1.00%)
Dec 31, 2025
BLACKROCK, INC.
8.14%
11.7M
+64,247 (+0.55%)
Mar 31, 2026
BLACKROCK FUNDING, INC. /DE
7.10%
10.2M
+319,005 (+3.14%)
Dec 31, 2024
BLACKROCK INC.
6.77%
9.7M
-80,477 (-0.83%)
Jun 30, 2024
WELLINGTON MANAGEMENT GROUP LLP
6.42%
9.2M
+561,839 (+6.11%)
Mar 31, 2026
GRANAHAN INVESTMENT MANAGEMENT INC/MA
5.92%
8.5M
+1.3M (+15.56%)
Dec 31, 2021
N/A
5.39%
7.7M
+7.7M (+100.00%)
Mar 31, 2026

Current Ownership Distribution

  • Institutions2.0B (55.85%)
  • Mutual Funds1.6B (43.60%)
  • Insiders19.8M (0.55%)
  • Other0 (0.00%)

Insider Transactions

  • 0.55% (19.8M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 4
    Number of InsiderSelling (last 12 months)
  • $29.3M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
BARRETT MICHAEL G.
CEO
Exempt
Jun 29, 2026
$0.00
75,000
$0.00
332,564
BARRETT MICHAEL G.
CEO
Exempt
Jun 29, 2026
$435,000.00
75,000
$5.80
478,074
BARRETT MICHAEL G.
CEO
Sell
Jun 29, 2026
$1.5M
75,000
$19.50
403,074
Buckley Sean Patrick
See Remarks
Sell
Jun 17, 2026
$365,427.00
19,233
$19.00
373,514
Buonasera David
CHIEF TECHNOLOGY OFFICER
Sell
Jun 17, 2026
$26,771.00
1,409
$19.00
279,085
Buonasera David
CHIEF TECHNOLOGY OFFICER
Sell
Jun 16, 2026
$202,194.00
11,233
$18.00
280,494
Buonasera David
CHIEF TECHNOLOGY OFFICER
Sell
Jun 15, 2026
$17,969.00
1,057
$17.00
291,727
PEARSON DAVID T.
Sell
Jun 10, 2026
$168,487.90
10,766
$15.65
79,001
Caine Paul
Award
Jun 08, 2026
$0.00
13,798
$0.00
167,401
Harden Sarah Patricia
Award
Jun 08, 2026
$0.00
13,798
$0.00
163,737
Yu Diane
Award
Jun 08, 2026
$0.00
13,798
$0.00
81,279
Rossman James
Award
Jun 08, 2026
$0.00
13,798
$0.00
107,477
Lam Rachel
Award
Jun 08, 2026
$0.00
13,798
$0.00
240,620
PEARSON DAVID T.
Award
Jun 08, 2026
$0.00
13,798
$0.00
89,767