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Filings
Ownership
Valuation
Ownership — OESX
Institutional Holdings
Insider Transactions
US Institutional Ownership
44.5%
Institution
Shares
Value
Ownership %
Change
Filing Date
North Star Investment Management Corp.
527.0K
$6.0M
12.94%
+1.4K
2026-06-30
Tieton Capital Management, LLC
284.5K
$3.0M
6.99%
+18.1K
2026-06-30
GRACE & WHITE INC /NY
263.6K
$3.0M
6.47%
+22.2K
2026-06-30
RENAISSANCE TECHNOLOGIES LLC
181.7K
$2.0M
4.46%
+3.2K
2026-06-30
VANGUARD CAPITAL MANAGEMENT LLC
127.5K
$1.0M
3.13%
+15.6K
2026-06-30
US BANCORP \DE\
70.2K
--
1.72%
--
2026-06-30
MARSHALL WACE, LLP
61.3K
--
1.51%
+4.4K
2026-06-30
SEI INVESTMENTS CO
55.4K
--
1.36%
-74.7K
2026-06-30
JANE STREET GROUP, LLC
53.7K
--
1.32%
+26.5K
2026-06-30
GEODE CAPITAL MANAGEMENT, LLC
38.1K
--
0.94%
-2.0K
2026-06-30
BlackRock, Inc.
36.9K
--
0.91%
+12.7K
2026-06-30
BRIDGEWAY CAPITAL MANAGEMENT, LLC
31.1K
--
0.76%
+7.2K
2026-06-30
VANGUARD FIDUCIARY TRUST CO
22.8K
--
0.56%
+5.5K
2026-06-30
ESSEX INVESTMENT MANAGEMENT CO LLC
20.6K
--
0.51%
+8.1K
2026-06-30
Quadrature Capital Ltd
20.2K
--
0.50%
+10.1K
2026-06-30
Farther Finance Advisors, LLC
9.7K
--
0.24%
--
2026-06-30
MORGAN STANLEY
1.7K
--
0.04%
+870
2026-06-30
IAG Wealth Partners, LLC
1.7K
--
0.04%
--
2026-06-30
Firsthand Capital Management, Inc.
1.4K
--
0.03%
--
2026-06-30
Axiom Investment Management LLC
1.2K
--
0.03%
--
2026-06-30
Vanguard Global Advisers, LLC
722
--
0.02%
--
2026-06-30
JPMORGAN CHASE & CO
591
--
0.01%
--
2026-06-30
JONES FINANCIAL COMPANIES LLLP
378
--
0.01%
+250
2026-06-30
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
344
--
0.01%
--
2026-06-30
COMPASS FINANCIAL MANAGEMENT LLC
268
--
0.01%
--
2026-06-30
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