OPTT Institutional Ownership & Shareholders
OCEAN POWER TECHNOLOGIES INC (OPTT) is currently held by 79 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $8.37M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Vanguard Capital Management Llc is currently the largest disclosed institutional shareholder of OPTT tracked by InsiderSet, reporting ownership valued at approximately $2.34M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $8.03M, representing an estimated gain of +243.55% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 90% of the total disclosed OPTT value among the investors covered in this analysis. Major shareholders include Vanguard Capital Management Llc, Ubs Group Ag, Blackrock, Inc., and several other long-term asset managers with concentrated positions in OCEAN POWER TECHNOLOGIES INC (OPTT).
This page ranks the largest institutional OPTT shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
79
Total Reported Value
$8.37M
Largest Holder
Vanguard Capital Management Llc
Largest Position
$2.34M
Insider Transactions (90d)
1
Latest Filing Quarter
Q2 2026
New Institutional Positions
96
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Vanguard Capital Management Llc | 0.00% | 8,919,165 | $2,336,821 | $8,028,140 | +$5,691,319 | +243.55% | |
| Ubs Group Ag | 0.00% | 6,869,388 | $1,799,779 | $6,183,136 | +$4,383,357 | +243.55% | |
| Blackrock, Inc. | 0.00% | 3,329,108 | $872,226 | $2,996,530 | +$2,124,304 | +243.55% | |
| Polar Asset Management Partners Inc. | 0.01% | 3,043,227 | $797,325 | $2,739,209 | +$1,941,884 | +243.55% | |
| Geode Capital Management, Llc | 0.00% | 2,198,484 | $576,201 | $1,978,855 | +$1,402,654 | +243.43% | |
| Vanguard Fiduciary Trust Co | 0.00% | 1,387,399 | $363,499 | $1,248,798 | +$885,299 | +243.55% | |
| Spinnaker Investment Group, Llc | 0.04% | 1,041,240 | $272,805 | $937,220 | +$664,415 | +243.55% | |
| State Street Corp | 0.00% | 982,684 | $257,463 | $884,514 | +$627,051 | +243.55% | |
| Northern Trust Corp | 0.00% | 519,151 | $136,018 | $467,288 | +$331,270 | +243.55% | |
| Royal Bank Of Canada | 0.00% | 518,050 | $136,000 | $466,297 | +$330,297 | +242.87% | |
| Hamilton Capital Partners, Llc | 0.04% | 500,195 | $131,051 | $450,226 | +$319,175 | +243.55% | |
| Susquehanna International Group, Llp | 0.00% | 256,667 | $67,247 | $231,026 | +$163,779 | +243.55% | |
| Essex Investment Management Co Llc | 0.01% | 204,864 | $53,674 | $184,398 | +$130,724 | +243.55% | |
| D'Orazio & Associates, Inc. | 0.01% | 197,503 | $51,746 | $177,772 | +$126,026 | +243.55% | |
| Onedigital Investment Advisors Llc | 0.00% | 159,532 | $41,797 | $143,595 | +$101,798 | +243.55% | |
| Pinnacle Financial Partners, Inc. | 0.00% | 130,500 | $34,191 | $117,463 | +$83,272 | +243.55% | |
| Simplex Trading, Llc | 0.00% | 129,786 | $34,003 | $116,820 | +$82,817 | +243.56% | |
| Imc-Chicago, Llc | 0.00% | 103,241 | $27,049 | $92,927 | +$65,878 | +243.55% | |
| Group One Trading Llc | 0.00% | 99,787 | $26,144 | $89,818 | +$63,674 | +243.55% | |
| Focus Partners Wealth | 0.00% | 81,550 | $21,366 | $73,403 | +$52,037 | +243.55% | |
| Osaic Holdings, Inc. | 0.00% | 70,203 | $18,372 | $63,190 | +$44,818 | +243.95% | |
| Advisory Services Network, Llc | 0.00% | 68,000 | $17,816 | $61,207 | +$43,391 | +243.55% | |
| Diversify Advisory Services, Llc | 0.00% | 119,995 | $17,279 | $108,007 | +$90,728 | +525.08% | |
| Diversify Wealth Management, Llc | 0.00% | 119,995 | $17,279 | $108,007 | +$90,728 | +525.08% | |
| Peak6 Llc | 0.00% | 63,381 | $16,606 | $57,049 | +$40,443 | +243.55% | |
| Jane Street Group, Llc | 0.00% | 60,531 | $15,859 | $54,484 | +$38,625 | +243.55% | |
| Morton Brown Family Wealth, Llc | 0.00% | 58,285 | $15,271 | $52,462 | +$37,191 | +243.54% | |
| Sbi Securities Co., Ltd. | 0.00% | 54,199 | $14,200 | $48,785 | +$34,585 | +243.55% | |
| Sequoia Financial Advisors | 0.00% | 50,000 | $13,100 | $45,005 | +$31,905 | +243.55% | |
| Legato Capital Management Llc | 0.00% | 48,257 | $12,643 | $43,436 | +$30,793 | +243.56% | |
| J.W. Cole Advisors, Inc. | 0.00% | 43,735 | $11,459 | $39,366 | +$27,907 | +243.54% | |
| Xtx Topco Ltd | 0.00% | 39,747 | $10,414 | $35,776 | +$25,362 | +243.54% | |
| Kelsey Financial, Llc | 0.01% | 37,000 | $9,694 | $33,304 | +$23,610 | +243.55% | |
| Vanguard Global Advisers, Llc | 0.00% | 36,567 | $9,581 | $32,914 | +$23,333 | +243.53% | |
| Envestnet Asset Management Inc | 0.00% | 30,057 | $7,875 | $27,054 | +$19,179 | +243.55% | |
| Rockefeller Capital Management L.P. | 0.00% | 30,000 | $7,860 | $27,003 | +$19,143 | +243.55% | |
| Bank Of Montreal | 0.00% | 18,000 | $7,200 | $16,202 | +$9,002 | +125.03% | |
| Gts Securities Llc | 0.00% | 25,000 | $6,550 | $22,503 | +$15,953 | +243.55% | |
| Two Sigma Securities, Llc | 0.00% | 24,847 | $6,510 | $22,365 | +$15,855 | +243.55% | |
| Caprock Group, Llc | 0.00% | 21,000 | $5,502 | $18,902 | +$13,400 | +243.55% | |
| Voisard Asset Management Group, Inc. | 0.00% | 21,000 | $5,502 | $18,902 | +$13,400 | +243.55% | |
| Vestgen Advisors, Llc | 0.00% | 20,431 | $5,353 | $18,390 | +$13,037 | +243.54% | |
| Openarc Corporate Advisory, Llc | 0.00% | 20,000 | $5,240 | $18,002 | +$12,762 | +243.55% | |
| Western Wealth Management, Llc | 0.00% | 20,000 | $5,240 | $18,002 | +$12,762 | +243.55% | |
| Captrust Financial Advisors | 0.00% | 18,964 | $4,969 | $17,069 | +$12,100 | +243.52% | |
| Lpl Financial Llc | 0.00% | 18,399 | $4,821 | $16,561 | +$11,740 | +243.52% | |
| Wells Fargo & Company/Mn | 0.00% | 18,216 | $4,773 | $16,396 | +$11,623 | +243.52% | |
| Jpmorgan Chase & Co | 0.00% | 17,245 | $4,570 | $15,522 | +$10,952 | +239.65% | |
| Tower Research Capital Llc (Trc) | 0.00% | 17,441 | $4,570 | $15,699 | +$11,129 | +243.52% | |
| Vanguard Personalized Indexing Management, Llc | 0.00% | 17,444 | $4,570 | $15,701 | +$11,131 | +243.57% |
Frequently asked questions about OPTT
Who are the largest institutional holders of OPTT?
The largest institutional holders of OPTT reported in the latest SEC Form 13F filings include Vanguard Capital Management Llc, Ubs Group Ag, Blackrock, Inc., Polar Asset Management Partners Inc., and Geode Capital Management, Llc. InsiderSet ranks institutional holders by their latest reported OPTT position.
What is OPTT institutional ownership?
This page tracks OPTT positions reported by institutional investment managers through SEC Form 13F. OCEAN POWER TECHNOLOGIES INC (OPTT) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own OPTT?
InsiderSet currently tracks 79 institutional managers reporting OPTT holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of OPTT shareholders.
How much OPTT stock do institutions own?
Institutional investment managers disclosed approximately $8.37M in OPTT holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was OPTT institutional ownership last updated?
The latest OPTT institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional OPTT holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its OPTT position after the reporting date.
Are institutions buying or selling OPTT?
Institutional buying and selling can be analyzed by comparing OPTT positions across consecutive 13F reporting periods. InsiderSet's OPTT Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View OPTT ownership changes.
How has OPTT institutional ownership changed over time?
InsiderSet tracks OPTT institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.