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Business Summary
Filings
Ownership
Valuation
Ownership — MGNI
Institutional Holdings
Insider Transactions
US Institutional Ownership
100.0%
Institution
Shares
Value
Ownership %
Change
Filing Date
BlackRock, Inc.
12.71M
$241.0M
8.87%
+1.06M
2026-06-30
VANGUARD PORTFOLIO MANAGEMENT LLC
8.20M
$155.0M
5.72%
+471.1K
2026-06-30
FMR LLC
7.76M
$147.0M
5.41%
+3.25M
2026-06-30
VANGUARD CAPITAL MANAGEMENT LLC
6.23M
$118.0M
4.34%
+34.8K
2026-06-30
WELLINGTON MANAGEMENT GROUP LLP
6.04M
$114.0M
4.22%
-3.15M
2026-06-30
DIMENSIONAL FUND ADVISORS LP
5.26M
$99.0M
3.67%
+1.28M
2026-06-30
Boston Partners
5.01M
$95.0M
3.50%
+294.0K
2026-06-30
AMERICAN CENTURY COMPANIES INC
4.62M
$87.0M
3.22%
-4.1K
2026-06-30
Capital Research Global Investors
3.87M
$73.0M
2.70%
-1.15M
2026-06-30
Nuveen, LLC
3.79M
$72.0M
2.65%
+204.8K
2026-06-30
GEODE CAPITAL MANAGEMENT, LLC
3.79M
$71.0M
2.64%
+236.2K
2026-06-30
Edenbrook Capital, LLC
3.56M
$67.0M
2.48%
+157.6K
2026-06-30
STATE STREET CORP
3.53M
$66.0M
2.46%
+364.9K
2026-06-30
325 CAPITAL LLC
3.41M
$64.0M
2.38%
+1.41M
2026-06-30
Nine Ten Capital Management LLC
3.26M
$61.0M
2.27%
-220.0K
2026-06-30
Granahan Investment Management, LLC
3.08M
$58.0M
2.15%
+529.8K
2026-06-30
CANADA PENSION PLAN INVESTMENT BOARD
3.00M
$56.0M
2.09%
+2.95M
2026-06-30
JANE STREET GROUP, LLC
2.39M
$45.0M
1.67%
+601.3K
2026-06-30
Park West Asset Management LLC
2.25M
$42.0M
1.57%
+1.65M
2026-06-30
Caption Management, LLC
2.00M
$37.0M
1.39%
+94.5K
2026-06-30
MORGAN STANLEY
1.99M
$37.0M
1.39%
+1.06M
2026-06-30
CITADEL ADVISORS LLC
1.98M
$37.0M
1.38%
-218.4K
2026-06-30
Qube Research & Technologies Ltd
1.96M
$37.0M
1.36%
+1.29M
2026-06-30
Blue Grotto Capital, LLC
1.71M
$32.0M
1.19%
+378.0K
2026-06-30
NORTHERN TRUST CORP
1.55M
$29.0M
1.08%
+230.8K
2026-06-30
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