Orion Energy Systems, Inc. (OESX) Institutional Ownership

Ownership Summary

Orion Energy Systems, Inc. (NASDAQ:OESX) appears in 26 institutional 13F filings for the quarter ending December 2025.

• These investors collectively held 38.7% of Orion Energy Systems's outstanding shares in December 2025, down from 39.9% in September 2025.
• They increased total shares held in Orion Energy Systems by 3.59% from last quarter, and the number of investors in OESX decreased 38.1% annually.
• Activity in OESX broke down as 12 buyers, 7 sellers, and 7 unchanged among 26 total holders.
• Combined, these investors held 1.41Mn shares in OESX for December 2025, up by 48.83K shares quarter on quarter, and down 13.8Mn shares year over year.
• North Star Investment Management Corp. holds the largest position in OESX at 525.55K shares as of December 31, 2025, or 14.45% of shares outstanding.
• The most significant purchases of OESX for the quarter ending December 2025 came from MYDA Advisors LLC (133.5K), North Star Investment Management Corp. (118.1K), VANGUARD CAPITAL MANAGEMENT LLC (111.92K), Manatuck Hill Partners, LLC (71.43K), Sei Investments Co (69.39K).
• The largest sellers of Orion Energy Systems for the quarter ending December 2025 were Quadrature Capital Ltd (3.08K), OSAIC HOLDINGS, INC. (42), SBI Securities Co., Ltd. (5).
• According to Business Quant data, leading holders of OESX for December 2025 are North Star Investment Management Corp. (525.55K), Tieton Capital Management, LLC (266.48K), GRACE & WHITE INC /NY (241.39K), RENAISSANCE TECHNOLOGIES LLC (178.47K), MYDA Advisors LLC (133.5K), Sei Investments Co (130.1K), VANGUARD CAPITAL MANAGEMENT LLC (111.92K), Manatuck Hill Partners, LLC (71.43K), Us Bancorp De (70.16K), MARSHALL WACE, LLP (56.92K).