Ocean Power Technologies, Inc.
Ocean Power Technologies, Inc. (OPTT) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · OPTT · as of Mar 31, 2025
Ownership Breakdown
54
Institutional Holders
▼ 6 vs Q4
$6.46M
Total Inst. Value
▼ $2.50M vs Q4
180.79M
Shares Outstanding
freeFloat 88.48%
14.18M
13F Shares Held
▲ 5.25M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
OPTT largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC electric services | 6.26M | 4.24% | 4.24% | $2.85B | May 9, 2025 | ▲ 3.03M |
BLACKROCK, INC. electric services | 2.82M | 1.91% | 1.91% | $1.28B | May 2, 2025 | ▲ 2.24M |
GEODE CAPITAL MANAGEMENT, LLC electric services | 1.56M | 1.06% | 1.06% | $711.16M | May 13, 2025 | ▲ 547.1K |
UBS GROUP AG electric services | 929.8K | 63.02% | 63.02% | $424.00M | May 13, 2025 | ▲ 929.0K |
SUSQUEHANNA INTERNATIONAL GROUP, LLP electric services | 639.8K | 43.36% | 43.36% | $291.60M | May 14, 2025 | ▼ 1.33M |
SUSQUEHANNA INTERNATIONAL GROUP, LLP electric services | 573.6K | 38.88% | 38.88% | $263.86M | May 14, 2025 | ▲ 56.3K |
STATE STREET CORP electric services | 419.9K | 28.46% | 28.46% | $191.38M | May 15, 2025 | ▲ 42.6K |
JANE STREET GROUP, LLC electric services | 372.9K | 25.27% | 25.27% | $169.97M | May 19, 2025 | ▼ 23.4K |
CITADEL ADVISORS LLC electric services | 352.0K | 23.86% | 23.86% | $160.44M | May 15, 2025 | ▼ 254.7K |
NORTHERN TRUST CORP electric services | 314.0K | 21.28% | 21.28% | $143.10M | May 13, 2025 | ▲ 184.1K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
12
Increased
+7.16M shares11
New Positions
first time holders15
Decreased
−2.53M shares0
Sold Out
fully exitedNet shares change (top 50)
+4.63M
+7.16M / −2.53M
Net new holders
+8
11 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
OPTT insider trading · insider activity
Source: SEC Form 4
32
Buy transactions
5
Sell transactions
6.40
Buy/Sell ratio
$2M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Stratmann Philipp President and CEO | Mar 5, 2026 | Tax Withhold | 901,096 | $0.43 | $391.1K | 1.93M | Form 4 ↗ |
PAGLIARA TRACY D Senior VP and General Counsel | Mar 5, 2026 | Tax Withhold | 322,897 | $0.43 | $140.1K | 858.4K | Form 4 ↗ |
Powers Robert Patrick Senior VP and CFO | Mar 5, 2026 | Tax Withhold | 437,550 | $0.43 | $189.9K | 1.04M | Form 4 ↗ |
Stratmann Philipp President and CEO | Jan 30, 2026 | Award | 392,553 | — | — | 2.83M | Form 4 ↗ |
Stratmann Philipp President and CEO | Jan 30, 2026 | Award | 100,198 | — | — | 2.44M | Form 4 ↗ |
Stratmann Philipp President and CEO | Jan 30, 2026 | Award | 100,162 | — | — | 2.34M | Form 4 ↗ |
Powers Robert Patrick CFO | Jan 30, 2026 | Award | 173,920 | — | — | 1.47M | Form 4 ↗ |
Powers Robert Patrick CFO | Jan 30, 2026 | Award | 54,032 | — | — | 1.30M | Form 4 ↗ |
Powers Robert Patrick CFO | Jan 30, 2026 | Award | 54,013 | — | — | 1.25M | Form 4 ↗ |
PAGLIARA TRACY D Senior VP and General Counsel | Jan 30, 2026 | Award | 201,442 | — | — | 1.18M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Ocean Power Technologies, Inc. (OPTT) is primarily owned by institutional investors, who hold approximately 7.8% of total shares outstanding. Company insiders own approximately 11.52%, while retail and public investors account for the remaining 80.63%.
The largest institutional shareholder of Ocean Power Technologies, Inc. is VANGUARD GROUP INC, holding approximately 6.26 million shares — equal to 4.24% of outstanding shares — as of March 31, 2025.
A total of 54 institutional investors currently hold OPTT stock, with a combined institutional value of approximately $6,463,770 as of the most recent 13F filing period.
Frequently asked questions
OPTT ownershipOcean Power Technologies, Inc. (OPTT) is primarily owned by institutional investors, who hold approximately 7.8% of shares. The largest shareholder is VANGUARD GROUP INC with a 4.24% stake. Company insiders hold 11.52%. Data sourced from SEC Form 13F as of March 31, 2025.