ESSEX INVESTMENT MANAGEMENT CO LLC
Position in OPTT — Ocean Power Technologies, Inc.
CIK 201772
BOSTON, MA
Position in OPTT
as of Jun 30, 2026
· filed Aug 6, 2026
Position Value
$53,264
-$18,553 QoQ
Shares Held
204,864
-0.2% QoQ
Ownership
0.076%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#15
of 81 holders
Holding Since
Sep 2025
4 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in OPTT Over Time
Shares Held
Position Value (USD)
Position in Specialty Industrial Machinery
Industrials · as of Jun 30, 2026ESSEX INVESTMENT MANAGEMENT CO LLC holds $37,740,140 across 13 Specialty Industrial Machinery names. OPTT ranks #8 (0.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | GHM |
Graham Corp
|
93,405 | $11,562,604 | |
| 2 | GEV |
GE Vernova Inc.
|
8,283 | $9,731,365 | |
| 3 | AMSC |
American Superconductor Corp /De/
|
221,933 | $9,212,438 | |
| 4 | MIR |
Mirion Technologies, Inc.
|
295,060 | $5,290,425 | |
| 5 | XYL |
Xylem Inc.
|
10,462 | $1,236,713 | |
| 6 | BWEN |
Broadwind, Inc.
|
94,671 | $457,260 | |
| 7 | GTES |
Gates Industrial Corp Ltd.
|
1,996 | $55,828 | |
| 8 | OPTT |
Ocean Power Technologies, Inc.
This page
|
204,864 | $53,264 |
All Filings in OPTT
Export CSV
4 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $53,264 | 204,864 | Shares | Sole | 2026-08-06 | |
| 2026-03-31 | $71,817 | 205,193 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $52,384 | 174,614 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $102,551 | 205,103 | Shares | Sole | 2025-11-06 | |
| No filing history on record for this holder in this stock. | ||||||