ESSEX INVESTMENT MANAGEMENT CO LLC
Position in OPTT — Ocean Power Technologies, Inc.
CIK 201772
BOSTON, MA
Position in OPTT
as of Mar 31, 2026
· filed May 11, 2026
Position Value
$71,817
+$19,433 QoQ
Shares Held
205,193
+17.5% QoQ
Ownership
0.090%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2025
3 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in OPTT Over Time
Shares Held
Position Value (USD)
Position in Specialty Industrial Machinery
Industrials · as of Mar 31, 2026ESSEX INVESTMENT MANAGEMENT CO LLC holds $32,520,382 across 13 Specialty Industrial Machinery names. OPTT ranks #7 (0.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | GHM |
Graham Corp
|
128,294 | $10,124,962 | |
| 2 | AMSC |
American Superconductor Corp /De/
|
227,558 | $7,702,838 | |
| 3 | GEV |
GE Vernova Inc.
|
8,319 | $7,261,655 | |
| 4 | MIR |
Mirion Technologies, Inc.
|
309,110 | $5,746,354 | |
| 5 | XYL |
Xylem Inc.
|
10,463 | $1,250,328 | |
| 6 | BWEN |
Broadwind, Inc.
|
94,788 | $197,159 | |
| 7 | OPTT |
Ocean Power Technologies, Inc.
This page
|
205,193 | $71,817 | |
| 8 | FLS |
Flowserve Corp
|
697 | $51,236 |
All Filings in OPTT
Export CSV
3 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 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. | ||||||