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OESX ORION ENERGY SYS INC

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COM NEW (common), issuer CIK 1409375

33 managers (36 13F filers) reported a position in OESX shares at 2026-03-31, 1,996,475 shares in all. 9 filers opened a position and 2 filers sold out during the quarter.

Managers
33
13F filers
36
New
9
Added
11
Reduced
3
Sold out
2
Shares held by filers
1,996,475

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
North Star Investment Management Corp.525,552$4.59M0.28%+118,10013F-HRTimeline
Tieton Capital Management, LLC266,476$2.33M0.78%+10,28213F-HRTimeline
GRACE & WHITE INC /NY241,387$2.11M0.37%+20,40013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC178,469$1.56M<0.01%+43,69313F-HRTimeline
MYDA Advisors LLC133,505$1.17M0.28%new13F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO130,101$1.14M<0.01%+69,38713F-HRTimelineGroup
VANGUARD GROUP INCgroup of 3 filers holding129,958$1.14MnewTimeline
Manatuck Hill Partners, LLC71,428$624K0.2%new13F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\70,155$613K<0.01%+11,60013F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP56,924$498K<0.01%+11,02813F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC40,098$351K<0.01%+5,10713F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC27,150$237K<0.01%new13F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.24,209$212K<0.01%013F-HRTimelineGroup
NewEdge Advisors, LLC24,140$211K<0.01%+9,05813F-HR/ATimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC23,940$209K<0.01%new13F-HRTimeline
ESSEX INVESTMENT MANAGEMENT CO LLC12,557$110K0.02%new13F-HRTimeline
Trexquant Investment LP12,376$108K<0.01%new13F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd11,194$97.8K<0.01%new13F-HRTimelineGroup
Quadrature Capital Ltdin group Quadrature Capital Ltd10,080$88.1K<0.01%-3,07613F-HRTimelineGroup
IAG Wealth Partners, LLC1,700$14.9K<0.01%013F-HRTimeline
Firsthand Capital Management, Inc.1,400$12.2K0.03%013F-HRTimeline
Axiom Investment Management LLC1,206$10.5K0.01%13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY877$7.67K<0.01%013F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding764$6.68K+580Timeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…288$2.52K<0.01%new13F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN200$1.75K<0.01%013F-HR/ATimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP128$1.18K<0.01%+5313F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.119$1.04K<0.01%-4213F-HRTimelineGroup
HARBOUR INVESTMENTS, INC.40$350<0.01%013F-HRTimeline
SBI Securities Co., Ltd.31$271<0.01%-513F-HRTimeline
Parallel Advisors, LLC19$166<0.01%013F-HR/ATimeline
IFP Advisors, Inc3$26<0.01%013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC1$9<0.01%013F-HRTimelineGroup