Orion Energy Systems OESX Institutional Ownership

Updated Oct 10, 2026

Orion Energy Systems, Inc. (NASDAQ:OESX) counted 35 institutional investors among its 13F-reported shareholders for the quarter ended June 30, 2026.

• These investors held 44.55% of Orion Energy Systems' outstanding shares at the end of Q2 2026, down from 48.62% in Q1 2026.
• Total shares held in Orion Energy Systems fell 8.04% versus Q1 2026, while the number of holders was unchanged versus Q2 2025.
• Of the 35 holders, 22 added to their positions, 3 reduced their stakes and 10 left their positions unchanged in Q2 2026.
• Combined, institutional investors held 1.81Mn shares of OESX as of Q2 2026, down 158.53K from the prior quarter and up 408.01K from a year earlier.
• North Star Investment Management Corp. held the largest position in OESX at 526.95K shares as of June 30, 2026, or 12.94% of shares outstanding.
• The largest position increases in OESX for Q2 2026 were by Jane Street Group, LLC (+26.54K shares), Grace & White Inc (+22.23K shares), Tieton Capital Management, LLC (+18.05K shares), Vanguard Capital Management LLC (+15.56K shares) and BlackRock, Inc. (+12.68K shares).
• Among holders that kept a stake in Orion Energy Systems, the biggest sellers in Q2 2026 were SEI Investments Co (-74.69K shares), Geode Capital Management, LLC (-1.97K shares) and UBS Group AG (-379 shares).
• Orion Energy Systems' 10 largest institutional shareholders as of Q2 2026 were North Star Investment Management Corp. (526.95K shares), Tieton Capital Management, LLC (284.53K shares), Grace & White Inc (263.61K shares), Renaissance Technologies LLC (181.67K shares), Vanguard Capital Management LLC (127.48K shares), Us Bancorp De (70.16K shares), Marshall Wace, LLP (61.34K shares), SEI Investments Co (55.41K shares), Jane Street Group, LLC (53.69K shares) and Geode Capital Management, LLC (38.12K shares), per Business Quant data.