ORION ENERGY SYSTEMS, INC. (OESX) — Institutional Holders, Q2 2026
35 institutional investment managers reported a OESX position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $21.2M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
OESX in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- JANE STREET GROUPAdded · +26,535 sh+$310.2K
- GRACE & WHITEAdded · +22,226 sh+$259.8K
- Tieton Capital ManagementAdded · +18,050 sh+$211.0K
- VANGUARD CAPITAL MANAGEMENTAdded · +15,560 sh+$181.9K
- BlackRockAdded · +12,681 sh+$148.2K
Biggest sellers
- MYDA AdvisorsSold out · -133,505 sh-$1.6M
- SEI INVESTMENTSTrimmed · -74,695 sh-$873.2K
- Manatuck Hill PartnersSold out · -71,428 sh-$835.0K
- Trexquant InvestmentSold out · -12,376 sh-$144.7K
- XTX Topco LtdSold out · -11,194 sh-$130.9K
OESX 13F holders ranked 1–35 of 35
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | North Star Investment Management#1 · 526,952 sh | 526,952 | $6.2M | 0.33% | +0.3% |
| 2 | Tieton Capital Management#2 · 284,526 sh | 284,526 | $3.3M | 0.96% | +6.8% |
| 3 | GRACE & WHITE#3 · 263,613 sh | 263,613 | $3.1M | — | +9.2% |
| 4 | RENAISSANCE TECHNOLOGIES#4 · 181,669 sh | 181,669 | $2.1M | <0.01% | +1.8% |
| 5 | VANGUARD CAPITAL MANAGEMENT#5 · 127,484 sh | 127,484 | $1.5M | 0.00% | +13.9% |
| 6 | US BANCORP \DE\#6 · 70,155 sh | 70,155 | $820.1K | <0.01% | 0.0% |
| 7 | MARSHALL WACE, LLP#7 · 61,342 sh | 61,342 | $717.1K | <0.01% | +7.8% |
| 8 | SEI INVESTMENTS#8 · 55,406 sh | 55,406 | $647.7K | <0.01% | -57.4% |
| 9 | JANE STREET GROUP#9 · 53,685 sh | 53,685 | $627.6K | <0.01% | +97.7% |
| 10 | GEODE CAPITAL MANAGEMENT#10 · 38,125 sh | 38,125 | $445.8K | 0.00% | -4.9% |
| 11 | BlackRock#11 · 36,890 sh | 36,890 | $431.2K | 0.00% | +52.4% |
| 12 | BRIDGEWAY CAPITAL MANAGEMENT#12 · 31,140 sh | 31,140 | $364.0K | <0.01% | +30.1% |
| 13 | VANGUARD FIDUCIARY#13 · 22,796 sh | 22,796 | $266.5K | <0.01% | +31.7% |
| 14 | ESSEX INVESTMENT MANAGEMENT#14 · 20,608 sh | 20,608 | $240.9K | — | +64.1% |
| 15 | Quadrature Capital Ltd#15 · 20,219 sh | 20,219 | $236.4K | <0.01% | +100.6% |
| 16 | Farther Finance Advisors#16 · 9,700 sh | 9,700 | $113.4K | — | New |
| 17 | MORGAN STANLEY#17 · 1,747 sh | 1,747 | $20.4K | 0.00% | +99.2% |
| 18 | IAG Wealth Partners#18 · 1,700 sh | 1,700 | $19.9K | <0.01% | 0.0% |
| 19 | Firsthand Capital Management#19 · 1,400 sh | 1,400 | $16.4K | 0.03% | 0.0% |
| 20 | Axiom Investment Management#20 · 1,206 sh | 1,206 | $14.1K | <0.01% | 0.0% |
| 21 | Vanguard Global Advisers#21 · 722 sh | 722 | $8.4K | 0.00% | 0.0% |
| 22 | ROYAL BANK OF CANADA#22 · 634 sh | 634 | $7.0K | 0.00% | New |
| 23 | JPMORGAN CHASE#23 · 591 sh | 591 | $7.0K | 0.00% | New |
| 24 | JONES FINANCIAL COMPANIES LLLP#24 · 378 sh | 378 | $4.3K | 0.00% | +195.3% |
| 25 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#25 · 344 sh | 344 | $4.0K | 0.00% | 0.0% |
| 26 | COMPASS FINANCIAL MANAGEMENT#26 · 268 sh | 268 | $3.1K | <0.01% | — |
| 27 | WELLS FARGO & COMPANY#27 · 200 sh | 200 | $2.3K | 0.00% | 0.0% |
| 28 | OSAIC#28 · 119 sh | 119 | $1.4K | 0.00% | 0.0% |
| 29 | HARBOUR INVESTMENTS#29 · 60 sh | 60 | $701.00 | 0.00% | +50.0% |
| 30 | UBS Group AG#30 · 41 sh | 41 | $479.00 | 0.00% | -90.2% |
| 31 | SBI Securities , Ltd.#31 · 31 sh | 31 | $362.00 | — | 0.0% |
| 32 | Parallel Advisors#32 · 19 sh | 19 | $222.00 | 0.00% | 0.0% |
| 33 | NATIONAL BANK OF CANADA#33 · 15 sh | 15 | $174.00 | 0.00% | New |
| 34 | BARCLAYS PLC#34 · 1 sh | 1 | $12.00 | 0.00% | New |
| 35 | NewEdge Advisors#35 · 0 sh | 0 | $0.00 | 0.00% | New |
Funds that sold out of OESX in Q2 2026 (7)
Held OESX at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| MYDA Advisors133,505 sh | 133,505 | $1.2M |
| Manatuck Hill Partners71,428 sh | 71,428 | $624.3K |
| Trexquant Investment12,376 sh | 12,376 | $108.2K |
| XTX Topco Ltd11,194 sh | 11,194 | $97.8K |
| Tower Research Capital (TRC)288 sh | 288 | $2.5K |
| IFP Advisors3 sh | 3 | $26.00 |
| CITIGROUP1 sh | 1 | $9.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.