ORION ENERGY SYSTEMS INC (OESX) Institutional Shareholders
ORION ENERGY SYSTEMS INC (OESX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $17.88M in OESX holdings during the latest filing period.
North Star Investment Management Corp. is currently the largest disclosed institutional shareholder of OESX tracked by InsiderSet, reporting ownership valued at approximately $6.16M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $14.49M, representing an estimated gain of +135.24% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 93% of the total disclosed OESX value among the investors covered in this analysis. Major shareholders include North Star Investment Management Corp., Grace & White Inc, Renaissance Technologies LLC, and several other long-term asset managers with concentrated positions in ORION ENERGY SYSTEMS INC (OESX).
This page ranks the largest institutional OESX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
33
Total Reported Value
$17.88M
Largest Holder
North Star Investment Management Corp.
Largest Position
$6.16M
Insider Transactions (90d)
20
Latest Filing Quarter
Q2 2026
New Institutional Positions
45
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| North Star Investment Management Corp. | 0.33% | 526,952 | $6,160,069 | $14,491,180 | +$8,331,111 | +135.24% | |
| Grace & White Inc | 0.49% | 263,613 | $3,081,636 | $7,249,358 | +$4,167,722 | +135.24% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 181,669 | $2,123,711 | $4,995,898 | +$2,872,187 | +135.24% |
| Vanguard Capital Management Llc | 0.00% | 127,484 | $1,490,288 | $3,505,810 | +$2,015,522 | +135.24% | |
| Us Bancorp \De\ | 0.00% | 70,155 | $820,112 | $1,929,263 | +$1,109,151 | +135.24% | |
| Marshall Wace, Llp | 0.00% | 61,342 | $717,088 | $1,686,905 | +$969,817 | +135.24% | |
| Sei Investments Co | 0.00% | 55,406 | $647,690 | $1,523,665 | +$875,975 | +135.25% | |
| Jane Street Group, Llc | 0.00% | 53,685 | $627,578 | $1,476,338 | +$848,760 | +135.24% | |
| Geode Capital Management, Llc | 0.00% | 38,125 | $445,788 | $1,048,438 | +$602,650 | +135.19% | |
| Blackrock, Inc. | 0.00% | 36,890 | $431,244 | $1,014,475 | +$583,231 | +135.24% | |
| Bridgeway Capital Management, Llc | 0.01% | 31,140 | $364,027 | $856,350 | +$492,323 | +135.24% | |
| Vanguard Fiduciary Trust Co | 0.00% | 22,796 | $266,485 | $626,890 | +$360,405 | +135.24% | |
| Essex Investment Management Co Llc | 0.03% | 20,608 | $240,908 | $566,720 | +$325,812 | +135.24% | |
| Quadrature Capital Ltd | 0.00% | 20,219 | $236,360 | $556,023 | +$319,663 | +135.24% | |
| Farther Finance Advisors, Llc | 0.00% | 9,700 | $113,393 | $266,750 | +$153,357 | +135.24% | |
| Morgan Stanley | 0.00% | 1,747 | $20,422 | $48,043 | +$27,621 | +135.25% | |
| Iag Wealth Partners, Llc | 0.00% | 1,700 | $19,873 | $46,750 | +$26,877 | +135.24% | |
| Firsthand Capital Management, Inc. | 0.03% | 1,400 | $16,366 | $38,500 | +$22,134 | +135.24% | |
| Axiom Investment Management Llc | 0.01% | 1,206 | $14,098 | $33,165 | +$19,067 | +135.25% | |
| Vanguard Global Advisers, Llc | 0.00% | 722 | $8,440 | $19,855 | +$11,415 | +135.25% | |
| Jpmorgan Chase & Co | 0.00% | 591 | $7,000 | $16,253 | +$9,253 | +132.18% | |
| Royal Bank Of Canada | 0.00% | 634 | $7,000 | $17,435 | +$10,435 | +149.07% | |
| Jones Financial Companies Lllp | 0.00% | 378 | $4,279 | $10,395 | +$6,116 | +142.93% | |
| Tieton Capital Management, Llc | 0.96% | 284,526 | $3,326 | $7,824,465 | +$7,821,139 | +235151.50% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 344 | $3,007 | $9,460 | +$6,453 | +214.60% | |
| Wells Fargo & Company/Mn | 0.00% | 200 | $2,338 | $5,500 | +$3,162 | +135.24% | |
| Osaic Holdings, Inc. | 0.00% | 119 | $1,390 | $3,273 | +$1,883 | +135.43% | |
| Harbour Investments, Inc. | 0.00% | 60 | $701 | $1,650 | +$949 | +135.38% | |
| Ubs Group Ag | 0.00% | 41 | $479 | $1,128 | +$649 | +135.39% | |
| Sbi Securities Co., Ltd. | 0.00% | 31 | $362 | $853 | +$491 | +135.50% | |
| Parallel Advisors, Llc | 0.00% | 19 | $222 | $523 | +$301 | +135.36% | |
| National Bank Of Canada | 0.00% | 15 | $174 | $413 | +$239 | +137.07% | |
| Barclays Plc | 0.00% | 1 | $12 | $28 | +$16 | +129.17% |
Frequently asked questions about OESX
Who owns the most OESX stock?
The largest holders of OESX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ORION ENERGY SYSTEMS INC (OESX).
Is OESX widely held by superinvestors?
Many widely followed stocks like OESX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly OESX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.