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Ownership — MRTN
Institutional Holdings
Insider Transactions
US Institutional Ownership
73.4%
Institution
Shares
Value
Ownership %
Change
Filing Date
BlackRock, Inc.
10.06M
$174.0M
12.32%
+298.9K
2026-06-30
Dimensional Fund Advisors LP
5.00M
$86.0M
6.12%
+105.7K
2026-06-30
American Century Companies Inc
2.80M
$48.0M
3.43%
+180.9K
2026-06-30
State Street Corp
2.72M
$47.0M
3.34%
+126.1K
2026-06-30
FMR LLC
2.70M
$46.0M
3.31%
+933.2K
2026-06-30
Vanguard Capital Management LLC
2.52M
$43.0M
3.09%
+28.2K
2026-06-30
Goldman Sachs Group Inc
2.10M
$36.0M
2.57%
+1.48M
2026-06-30
Nuveen, LLC
1.95M
$33.0M
2.38%
+1.29M
2026-06-30
Two Sigma Investments, LP
1.83M
$31.0M
2.24%
--
2026-06-30
Geode Capital Management, LLC
1.55M
$26.0M
1.90%
+86.0K
2026-06-30
Royce & Associates LP
1.39M
$24.0M
1.71%
+414.7K
2026-06-30
Morgan Stanley
1.35M
$23.0M
1.66%
+58.9K
2026-06-30
Vanguard Portfolio Management LLC
1.22M
$21.0M
1.49%
+105.2K
2026-06-30
Charles Schwab Investment Management Inc
1.20M
$20.0M
1.47%
-76.3K
2026-06-30
Sixth Street Partners Management Company, L.P.
1.20M
$20.0M
1.47%
--
2026-06-30
Ameriprise Financial Inc
1.08M
$18.0M
1.32%
+111.6K
2026-06-30
Boston Partners
1.05M
$18.0M
1.28%
-650.7K
2026-06-30
Russell Investments Group, Ltd.
922.4K
$16.0M
1.13%
-174.9K
2026-06-30
Arrowstreet Capital, Limited Partnership
919.7K
$15.0M
1.13%
+243.2K
2026-06-30
Bessemer Group Inc
873.5K
$15.0M
1.07%
+873.3K
2026-06-30
London Co of Virginia
854.0K
$14.0M
1.05%
-35.3K
2026-06-30
Citadel Advisors LLC
792.8K
$13.0M
0.97%
+18.1K
2026-06-30
12th Street Asset Management Company, LLC
758.6K
$13.0M
0.93%
--
2026-06-30
Next Century Growth Investors LLC
699.3K
$12.0M
0.86%
+280.9K
2026-06-30
Northern Trust Corp
667.7K
$11.0M
0.82%
+41.4K
2026-06-30
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