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Institutional Ownership · SEC Form 13F

Who owns Orion Energy Systems (OESX)


Which tracked institutional funds hold OESX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See OESX company fundamentals →

Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-14). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

34
Institutional holders
2M
Shares held (tracked funds)
37.7%
Of shares outstanding

How the tape is positioned

6 tracked funds added or opened OESX while 4 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.

A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.

Conviction spread

OESX’s largest tracked holder by dollar value, North Star Investment Management Corp., sizes it at 0.3% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.3pp conviction gap — its largest holder concentrates the name more heavily than the typical one.

Book-share is each fund’s reported value in OESX divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.

Institutional & insider positioning

Between 2026-Q1 and 2026-Q2, across 34 tracked filers holding OESX, 21 increased or opened the position and 11 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.

This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.

New buyers & exits

Funds opening or closing a position in OESX between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.

Full exits 3

  • Tieton Capital Management, LLC$2M
  • MYDA Advisors LLC$1M
  • Manatuck Hill Partners, LLC$624K

Largest adds

  • North Star Investment Management Corp.$2M
  • GRACE & WHITE INC /NY$972K
  • RENAISSANCE TECHNOLOGIES LLC$564K
  • VANGUARD CAPITAL MANAGEMENT LLC$512K
  • MARSHALL WACE, LLP$413K
  • JANE STREET GROUP, LLC$390K

Largest trims

  • SEI INVESTMENTS CO$489K

Institutional holders

One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).

FundSharesReported value% of valueQuarter
North Star Investment Management Corp. added526,952$6M23.4%2026-Q2
GRACE & WHITE INC /NY added263,613$3M11.7%2026-Q2
RENAISSANCE TECHNOLOGIES LLC added181,669$2M8.1%2026-Q2
VANGUARD CAPITAL MANAGEMENT LLC added127,484$1M5.7%2026-Q2
US BANCORP \DE\70,155$820K3.1%2026-Q2
MARSHALL WACE, LLP added61,342$717K2.7%2026-Q2
SEI INVESTMENTS CO trimmed55,406$648K2.5%2026-Q2
JANE STREET GROUP, LLC added53,685$628K2.4%2026-Q2
GEODE CAPITAL MANAGEMENT, LLC trimmed38,125$446K1.7%2026-Q2
BlackRock, Inc. added36,890$431K1.6%2026-Q2
BRIDGEWAY CAPITAL MANAGEMENT, LLC added31,140$364K1.4%2026-Q2
VANGUARD FIDUCIARY TRUST CO added22,796$266K1.0%2026-Q2
ESSEX INVESTMENT MANAGEMENT CO LLC added20,608$241K0.9%2026-Q2
Quadrature Capital Ltd added20,219$236K0.9%2026-Q2
Farther Finance Advisors, LLC new9,700$113K0.4%2026-Q2
MORGAN STANLEY added1,747$20K0.1%2026-Q2
IAG Wealth Partners, LLC1,700$20K0.1%2026-Q2
Firsthand Capital Management, Inc.1,400$16K0.1%2026-Q2
Axiom Investment Management LLC1,206$14K0.1%2026-Q2
Vanguard Global Advisers, LLC722$8K0.0%2026-Q2
ROYAL BANK OF CANADA new634$7K0.0%2026-Q2
JPMORGAN CHASE & CO added591$7K0.0%2026-Q2
JONES FINANCIAL COMPANIES LLLP added378$4K0.0%2026-Q2
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC344$4K0.0%2026-Q2
COMPASS FINANCIAL MANAGEMENT LLC new268$3K0.0%2026-Q2
WELLS FARGO & COMPANY/MN200$2K0.0%2026-Q2
OSAIC HOLDINGS, INC.119$1K0.0%2026-Q2
HARBOUR INVESTMENTS, INC. added60$7010.0%2026-Q2
UBS Group AG trimmed41$4790.0%2026-Q2
SBI Securities Co., Ltd.31$3620.0%2026-Q2
Parallel Advisors, LLC19$2220.0%2026-Q2
NATIONAL BANK OF CANADA /FI/ new15$1740.0%2026-Q2
BARCLAYS PLC trimmed1$120.0%2026-Q2
NewEdge Advisors, LLC trimmed0—0.0%2026-Q2
Tieton Capital Management, LLC added266,476$2M8.9%2026-Q1 stale (1 quarter behind)
VANGUARD GROUP INC added129,958$2M7.6%2025-Q4 stale (2 quarters behind)
Annandale Capital, LLC trimmed17,333$2M5.8%2025-Q3 stale (3 quarters behind)
MYDA Advisors LLC new133,505$1M4.4%2026-Q1 stale (1 quarter behind)
Manatuck Hill Partners, LLC new71,428$624K2.4%2026-Q1 stale (1 quarter behind)
Penbrook Management LLC trimmed16,644$146K0.6%2025-Q3 stale (3 quarters behind)
Trexquant Investment LP new12,376$108K0.4%2026-Q1 stale (1 quarter behind)
XTX Topco Ltd trimmed11,194$98K0.4%2026-Q1 stale (1 quarter behind)
CITADEL ADVISORS LLC trimmed142,982$87K0.3%2025-Q2 stale (4 quarters behind)
SUSQUEHANNA INTERNATIONAL GROUP, LLP added126,545$77K0.3%2025-Q2 stale (4 quarters behind)
THOMPSON DAVIS & CO., INC. added96,905$58K0.2%2025-Q2 stale (4 quarters behind)
STATE STREET CORP85,608$52K0.2%2025-Q2 stale (4 quarters behind)
NORTHERN TRUST CORP55,794$33K0.1%2025-Q2 stale (4 quarters behind)
BANK OF AMERICA CORP /DE/2,027$31K0.1%2025-Q4 stale (2 quarters behind)
Mariner, LLC43,527$27K0.1%2025-Q2 stale (4 quarters behind)
Beacon Pointe Advisors, LLC31,590$19K0.1%2025-Q2 stale (4 quarters behind)
KESTRA PRIVATE WEALTH SERVICES, LLC added20,000$12K0.0%2025-Q2 stale (4 quarters behind)
RAYMOND JAMES FINANCIAL INC added15,137$9K0.0%2025-Q2 stale (4 quarters behind)
Register Financial Advisors LLC15,000$9K0.0%2025-Q2 stale (4 quarters behind)
Smith Anglin Financial, LLC15,000$9K0.0%2025-Q2 stale (4 quarters behind)
LPL Financial LLC12,568$8K0.0%2025-Q2 stale (4 quarters behind)
Tower Research Capital LLC (TRC) added288$3K0.0%2026-Q1 stale (1 quarter behind)
Allworth Financial LP trimmed50$4380.0%2025-Q3 stale (3 quarters behind)
Federation des caisses Desjardins du Quebec650$3900.0%2025-Q2 stale (4 quarters behind)
EverSource Wealth Advisors, LLC10$1540.0%2025-Q4 stale (2 quarters behind)
IFP Advisors, Inc3$260.0%2026-Q1 stale (1 quarter behind)
CITIGROUP INC1$90.0%2026-Q1 stale (1 quarter behind)
CONCOURSE FINANCIAL GROUP SECURITIES, INC.0—0.0%2025-Q2 stale (4 quarters behind)

Ownership over time

Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.

HoldersTotal shares

Reading this table

Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.

About 13F filings

A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.

Learn how to read institutional ownership