4 quarters of 13F filings · Δ columns show change vs prior quarter
Quarter
Inst. Holders
Δ Holders
Ownership %
Δ Ownership
Total 13F Value
Δ Value
Q2 2026
35
2.8%
44.71%
4.69 pp
$18M
+18%
Q1 2026
36
+38%
49.40%
+9.59 pp
$15M
15%
Q4 2025
26
+13%
39.81%
+0.74 pp
$18M
+81%
Q3 2025
23
—
39.07%
—
$10M
—
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
OESX — Frequently Asked Questions
Quick answers to the most common questions about buying OESX stock.
What percentage of OESX is owned by institutions?
Based on Q2 2026 13F filings, institutional ownership of Orion Energy Systems, Inc. stands at 44.7%, held across 35 reporting institutions.
Who is the largest institutional holder of OESX?
North Star Investment Management Corp. is the largest reported institutional holder of OESX, with approximately 526,952 shares worth $0.01B as of Q2 2026.
Is OESX a hedge fund favorite?
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of OESX, including RENAISSANCE TECHNOLOGIES LLC, JANE STREET GROUP, LLC.
What is OESX's Smart Money Score?
Our composite Smart Money Score for OESX is 39 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in OESX — a direct measure of their conviction.
5 institutions opened new positions in OESX during Q2 2026, while 7 fully exited. 25 added to existing positions and 2 trimmed.
How is institutional ownership of OESX changing?
OESX institutional ownership fell by 4.69 percentage points quarter-over-quarter, with a net change of -1 holders.
How concentrated is OESX ownership among the top holders?
The top 10 institutions account for 92.5% of all reported 13F value in OESX, and the top 25 account for 100.0%.
Where does this OESX institutional ownership data come from?
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Orion Energy Systems, Inc. (OESX) Institutional Ownership