13F Insight
DOSSIER · 13F Holders · Q1 2026BellwetherCompounder
OESX

ORION ENERGY SYS INC

36 institutions still hold ORION ENERGY SYS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 686275207·36 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 5.6%
vs prior quarter
13F value held
$19M
50.0% inst. owned
of float
Holders
36
-17 QoQ
filers reporting
Activity
+98 / −17
+963 added · −773 reduced
this quarter
Concentration
23.78%
North Star Investment Management Corp. #1
top holder share
AI Holders Summary · Q1 2026

36 institutions reported OESX in Q1 2026. North Star Investment Management Corp. leads at 23.8% of the visible book. -17 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
North Star Investment Management Corp.
CIK 0001342857
$5M526K0.28%Q1 202602
Tieton Capital Management, LLC
CIK 0001381954
$4M256K1.35%Q4 202503
GRACE & WHITE INC /NY
CIK 0000903064
$2M241K0.37%Q1 202604
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$2M178K0.00%Q1 202605
MYDA Advisors LLC
CIK 0001589689
$1M134K0.19%Q1 202606
SEI INVESTMENTS CO
CIK 0000350894
$1M130K0.00%Q1 202607
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$978,216112K0.00%Q1 202608
MARSHALL WACE, LLP
CIK 0001318757
$705,88146K0.00%Q4 202509
Manatuck Hill Partners, LLC
CIK 0001467902
$624,28171K0.17%Q1 202610
US BANCORP \DE\
CIK 0000036104
$613,15570K0.00%Q1 202611
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$350,53040K0.00%Q1 202612
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$237,29127K0.00%Q1 202613
BlackRock, Inc.
CIK 0002012383
$211,58724K0.00%Q1 202614
NewEdge Advisors, LLC
CIK 0001633516
$210,98524K0.00%Q1 202615
BRIDGEWAY CAPITAL MANAGEMENT, LLC
CIK 0001107261
$209,23624K0.00%Q1 202616
Quadrature Capital Ltd
CIK 0001651424
$202,33913K0.00%Q4 202517
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$151,30717K0.00%Q1 202618
ESSEX INVESTMENT MANAGEMENT CO LLC
CIK 0000201772
$109,74813K0.02%Q1 202619
Trexquant Investment LP
CIK 0001633445
$108,16612K0.00%Q1 202620
XTX Topco Ltd
CIK 0001828301
$97,83611K0.00%Q1 2026
Page 1 of 2
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