Ocean Power Technologies
OPTT · NYSE American
$0.5465−$0.0295 (−5.12%)TodayMarket closed ·
Prev close $0.576
Who owns OPTT
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 12.2% of OPTT’s shares.
- Vanguard Capital Management, LLC3.4%
- UBS Financial Services, Inc.2.6%
- BlackRock Institutional Trust Company, N.A.1.3%
- Polar Asset Management Partners Inc.1.2%
- Next 6 largest institutions3.7%
- All other shareholders87.8%
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Capital Management, LLC | 8.92M | 3.44% |
| UBS Financial Services, Inc. | 6.63M | 2.56% |
| BlackRock Institutional Trust Company, N.A. | 3.33M | 1.28% |
| Polar Asset Management Partners Inc. | 3.04M | 1.17% |
| Cryan (Terence James) | 2.28M | 0.88% |
| Geode Capital Management, L.L.C. | 2.20M | 0.85% |
| Vanguard Fiduciary Trust Co | 1.39M | 0.54% |
| Stratmann (Philipp) | 1.38M | 0.53% |
| Purcel (Diana G) | 1.31M | 0.50% |
| Spinnaker Investment Group, LLC | 1.04M | 0.40% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 6.13M | 2.37% |
| Vanguard Extended Market Index Fund | 2.57M | 0.99% |
| Fidelity Extended Market Index Fund | 1.18M | 0.46% |
| Fidelity Total Market Index Fund | 322.79K | 0.12% |
| Fidelity Series Total Market Index Fund | 281.68K | 0.11% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of OPTT in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| PAGLIARA TRACY D | Award | 75.00K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 1.79M
- Days to cover
- 4.06
- % of shares outstanding
- 0.69%
- Average daily volume
- 441.83K
- Change since last report
- +17.1%
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