MTRN
Materials
CROWD: AMBER
Institutional ownership is building here. Not yet crowded, but the quiet phase is ending.
Active holders
140
of 332 total, index funds excluded
Conviction
1 bps
median holder weight: token bet
Streak
1q
consecutive rising quarters
The crowd, 2016 to now
active holders per quarter
2016Mar 2026
Holdings as of Mar 31, 2026, filed by May 16, 2026. Counts for the newest quarter keep settling for a few weeks as amendments land.
The tide
funds in (up) vs out (down)
Top holders
by reported value · $2.9B held
| Fund | Value | Note |
|---|
| BlackRock, Inc. |
$487M |
|
| VANGUARD PORTFOLIO MANAGEME… |
$195M |
|
| STATE STREET CORP |
$192M |
|
| VANGUARD CAPITAL MANAGEMENT… |
$134M |
|
| DIMENSIONAL FUND ADVISORS LP |
$128M |
|
| AMERICAN CENTURY COMPANIES … |
$128M |
|
| Capital Research Global Inv… |
$114M |
|
| BARROW HANLEY MEWHINNEY & S… |
$77M |
|
| GEODE CAPITAL MANAGEMENT, L… |
$73M |
|
| ACK Asset Management LLC |
$69M |
|
Tourists vs true believers
every holder a dot · right = bigger bet in their own book, up = patient money
Hover any dot for the fund and its bet size. Patience is measured from each filer's actual quarter-to-quarter turnover across our whole database.