OESX Orion Energy Systems, Inc.
Orion Energy Systems, Inc. (OESX) Institutional Ownership
What the institutions did with OESX last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| North Star Investment Management Corp. | 527.0K | 29.1% |
| Tieton Capital Management, LLC | 284.5K | 15.7% |
| GRACE & WHITE INC /NY | 263.6K | 14.5% |
| RENAISSANCE TECHNOLOGIES LLC | 181.7K | 10.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 127.5K | 7.0% |
| US BANCORP \DE\ | 70.2K | 3.9% |
| MARSHALL WACE, LLP | 61.3K | 3.4% |
| SEI INVESTMENTS CO | 55.4K | 3.1% |
| JANE STREET GROUP, LLC | 53.7K | 3.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 38.1K | 2.1% |
| BlackRock, Inc. | 36.9K | 2.0% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 31.1K | 1.7% |
| VANGUARD FIDUCIARY TRUST CO | 22.8K | 1.3% |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 20.6K | 1.1% |
| Quadrature Capital Ltd | 20.2K | 1.1% |
| Farther Finance Advisors, LLC | 9.7K | 0.5% |
| MORGAN STANLEY | 1.7K | 0.1% |
| IAG Wealth Partners, LLC | 1.7K | 0.1% |
| Firsthand Capital Management, Inc. | 1.4K | 0.1% |
| Axiom Investment Management LLC | 1.2K | 0.1% |
| Vanguard Global Advisers, LLC | 722 | 0.0% |
| ROYAL BANK OF CANADA | 634 | 0.0% |
| JPMORGAN CHASE & CO | 591 | 0.0% |
| JONES FINANCIAL COMPANIES LLLP | 378 | 0.0% |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 344 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| MYDA Advisors LLC | Sold Out | 133.5K | 0 | -133.5K |
| SEI INVESTMENTS CO | Reduced | 130.1K | 55.4K | -74.7K |
| Manatuck Hill Partners, LLC | Sold Out | 71.4K | 0 | -71.4K |
| JANE STREET GROUP, LLC | Increased | 27.2K | 53.7K | +26.5K |
| NewEdge Advisors, LLC | Sold Out | 24.1K | 0 | -24.1K |
| GRACE & WHITE INC /NY | Increased | 241.4K | 263.6K | +22.2K |
| Tieton Capital Management, LLC | Increased | 266.5K | 284.5K | +18.1K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 111.9K | 127.5K | +15.6K |
| BlackRock, Inc. | Increased | 24.2K | 36.9K | +12.7K |
| Trexquant Investment LP | Sold Out | 12.4K | 0 | -12.4K |
| XTX Topco Ltd | Sold Out | 11.2K | 0 | -11.2K |
| Quadrature Capital Ltd | Increased | 10.1K | 20.2K | +10.1K |
| Farther Finance Advisors, LLC | New | 0 | 9.7K | +9.7K |
| ESSEX INVESTMENT MANAGEMENT CO LLC | Increased | 12.6K | 20.6K | +8.1K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Increased | 23.9K | 31.1K | +7.2K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 17.3K | 22.8K | +5.5K |
| MARSHALL WACE, LLP | Increased | 56.9K | 61.3K | +4.4K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 178.5K | 181.7K | +3.2K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 40.1K | 38.1K | -2.0K |
| North Star Investment Management Corp. | Increased | 525.6K | 527.0K | +1.4K |
| MORGAN STANLEY | Increased | 877 | 1.7K | +870 |
| ROYAL BANK OF CANADA | New | 0 | 634 | +634 |
| JPMORGAN CHASE & CO | New | 0 | 591 | +591 |
| UBS Group AG | Reduced | 420 | 41 | -379 |
| Tower Research Capital LLC (TRC) | Sold Out | 288 | 0 | -288 |
| JONES FINANCIAL COMPANIES LLLP | Increased | 128 | 378 | +250 |
| HARBOUR INVESTMENTS, INC. | Increased | 40 | 60 | +20 |
| NATIONAL BANK OF CANADA /FI/ | New | 0 | 15 | +15 |
| IFP Advisors, Inc | Sold Out | 3 | 0 | -3 |
| CITIGROUP INC | Sold Out | 1 | 0 | -1 |
| BARCLAYS PLC | New | 0 | 1 | +1 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.