DOSSIER · 13F Holders · Q2 2026
MPTI

M-TRON INDS INC

104 institutions still hold M-TRON INDS INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 55380K109·104 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$127M
visible holders
Holders
104
filers reporting
Concentration
19.74%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

104 institutions reported MPTI in Q2 2026. BlackRock, Inc. leads at 19.7% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$25M253K0.00%Q2 2026
02
GAMCO INVESTORS, INC. ET AL
CIK 0000807249
$11M168K0.11%Q1 2026
03
STATE STREET CORP
CIK 0000093751
$8M82K0.00%Q2 2026
04
Palisades Investment Partners, LLC
CIK 0001427373
$8M82K2.32%Q2 2026
05
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$8M117K0.00%Q1 2026
06
NEXT CENTURY GROWTH INVESTORS LLC
CIK 0001134007
$7M108K0.52%Q1 2026
07
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$6M97K0.01%Q1 2026
08
Herald Investment Management Ltd
CIK 0001512022
$6M59K0.79%Q2 2026
09
BARD ASSOCIATES INC
CIK 0001105907
$6M86K1.43%Q1 2026
10
Archon Capital Management LLC
CIK 0001398825
$5M78K2.95%Q1 2026
11
NOMURA HOLDINGS INC
CIK 0001163653
$5M73K0.01%Q1 2026
12
Aristides Capital LLC
CIK 0001595521
$4M66K0.95%Q1 2026
13
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$4M64K0.00%Q1 2026
14
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$4M62K0.00%Q1 2026
15
Grandeur Peak Global Advisors, LLC
CIK 0001569137
$3M51K0.80%Q1 2026
16
ADVISORY RESEARCH INC
CIK 0000902584
$3M51K0.42%Q1 2026
17
NEW YORK STATE COMMON RETIREMENT FUND
CIK 0000810265
$3M32K0.00%Q2 2026
18
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$3M45K0.00%Q1 2026
19
Congruence Capital, LLC
CIK 0002085569
$3M42K0.95%Q1 2026
20
Cable Car Capital, LP
CIK 0001699575
$3M40K0.92%Q1 2026
Page 1 of 6
84 more holders available. Log in →
Insiders at M-TRON INDS INC
Pforr CameronSusanto HendiDrafts William ArnoldBiles Linda MArteaga IvanLazar BelMega John SLapenta Robert V Jr