OCEAN POWER TECHNOLOGIES INC (OPTT) Top Institutional Shareholders
OCEAN POWER TECHNOLOGIES INC (OPTT) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $8.81M in OPTT holdings during the latest filing period.
Vanguard Capital Management Llc is currently the largest disclosed institutional shareholder of OPTT tracked by InsiderSet, reporting ownership valued at approximately $3.00M in its March 31, 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 $2.42M, representing an estimated loss of -19.43% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 89% 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
70
Total Reported Value
$8.81M
Largest Holder
Vanguard Capital Management Llc
Largest Position
$3.00M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
80
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% | 8,578,522 | $3,002,483 | $2,419,143 | -$583,340 | -19.43% | |
| Ubs Group Ag | 0.00% | 3,981,442 | $1,393,504 | $1,122,767 | -$270,737 | -19.43% | |
| Blackrock, Inc. | 0.00% | 3,329,109 | $1,165,188 | $938,809 | -$226,379 | -19.43% | |
| Geode Capital Management, Llc | 0.00% | 2,155,409 | $754,641 | $607,825 | -$146,816 | -19.46% | |
| Spinnaker Investment Group, Llc | 0.07% | 1,041,240 | $364,434 | $293,630 | -$70,804 | -19.43% | |
| Vanguard Fiduciary Trust Co | 0.00% | 1,034,207 | $361,972 | $291,646 | -$70,326 | -19.43% | |
| State Street Corp | 0.00% | 810,284 | $283,599 | $228,500 | -$55,099 | -19.43% | |
| Royal Bank Of Canada | 0.00% | 705,550 | $247,000 | $198,965 | -$48,035 | -19.45% | |
| D'Orazio & Associates, Inc. | 0.02% | 404,677 | $141,637 | $114,119 | -$27,518 | -19.43% | |
| Susquehanna International Group, Llp | 0.00% | 361,415 | $126,495 | $101,919 | -$24,576 | -19.43% | |
| Northern Trust Corp | 0.00% | 349,358 | $122,275 | $98,519 | -$23,756 | -19.43% | |
| Peak6 Llc | 0.00% | 320,000 | $112,000 | $90,240 | -$21,760 | -19.43% | |
| Essex Investment Management Co Llc | 0.01% | 205,193 | $71,818 | $57,864 | -$13,954 | -19.43% | |
| Onedigital Investment Advisors Llc | 0.00% | 182,269 | $63,794 | $51,400 | -$12,394 | -19.43% | |
| Moneta Group Investment Advisors Llc | 0.00% | 157,557 | $55,145 | $44,431 | -$10,714 | -19.43% | |
| Simplex Trading, Llc | 0.00% | 152,315 | $53,310 | $42,953 | -$10,357 | -19.43% | |
| Group One Trading Llc | 0.00% | 140,631 | $49,221 | $39,658 | -$9,563 | -19.43% | |
| Pinnacle Financial Partners, Inc. | 0.00% | 100,500 | $35,175 | $28,341 | -$6,834 | -19.43% | |
| Private Advisor Group, Llc | 0.00% | 100,000 | $35,000 | $28,200 | -$6,800 | -19.43% | |
| Norris Financial Group, Llc | 0.01% | 12,500 | $33,625 | $3,525 | -$30,100 | -89.52% | |
| Osaic Holdings, Inc. | 0.00% | 90,150 | $31,552 | $25,422 | -$6,130 | -19.43% | |
| Advisory Services Network, Llc | 0.00% | 65,000 | $22,750 | $18,330 | -$4,420 | -19.43% | |
| Diversify Wealth Management, Llc | 0.00% | 59,575 | $20,673 | $16,800 | -$3,873 | -18.73% | |
| Morton Brown Family Wealth, Llc | 0.01% | 58,285 | $20,400 | $16,436 | -$3,964 | -19.43% | |
| Charles Schwab Investment Management Inc | 0.00% | 50,000 | $17,500 | $14,100 | -$3,400 | -19.43% | |
| Legato Capital Management Llc | 0.00% | 48,257 | $16,890 | $13,608 | -$3,282 | -19.43% | |
| Sargent Investment Group, Llc | 0.00% | 45,000 | $15,750 | $12,690 | -$3,060 | -19.43% | |
| Jane Street Group, Llc | 0.00% | 42,653 | $14,929 | $12,028 | -$2,901 | -19.43% | |
| Vanguard Global Advisers, Llc | 0.00% | 36,567 | $12,798 | $10,312 | -$2,486 | -19.43% | |
| Imc-Chicago, Llc | 0.00% | 34,341 | $12,019 | $9,684 | -$2,335 | -19.43% | |
| Rockefeller Capital Management L.P. | 0.00% | 30,000 | $10,500 | $8,460 | -$2,040 | -19.43% | |
| Newedge Advisors, Llc | 0.00% | 10,000 | $10,000 | $2,820 | -$7,180 | -71.80% | |
| Two Sigma Securities, Llc | 0.00% | 27,137 | $9,498 | $7,653 | -$1,845 | -19.43% | |
| Kelsey Financial, Llc | 0.01% | 27,000 | $9,450 | $7,614 | -$1,836 | -19.43% | |
| Mn Wealth Advisors, Llc | 0.00% | 27,000 | $9,450 | $7,614 | -$1,836 | -19.43% | |
| Sbi Securities Co., Ltd. | 0.00% | 25,151 | $8,803 | $7,093 | -$1,710 | -19.43% | |
| Gts Securities Llc | 0.00% | 25,000 | $8,750 | $7,050 | -$1,700 | -19.43% | |
| Morgan Stanley | 0.00% | 21,000 | $7,350 | $5,922 | -$1,428 | -19.43% | |
| Voisard Asset Management Group, Inc. | 0.00% | 21,000 | $7,350 | $5,922 | -$1,428 | -19.43% | |
| Vestgen Advisors, Llc | 0.00% | 20,431 | $7,083 | $5,762 | -$1,321 | -18.66% | |
| Openarc Corporate Advisory, Llc | 0.00% | 20,000 | $7,000 | $5,640 | -$1,360 | -19.43% | |
| Western Wealth Management, Llc | 0.00% | 20,000 | $7,000 | $5,640 | -$1,360 | -19.43% | |
| Captrust Financial Advisors | 0.00% | 18,964 | $6,637 | $5,348 | -$1,289 | -19.42% | |
| Vanguard Personalized Indexing Management, Llc | 0.00% | 18,634 | $6,522 | $5,255 | -$1,267 | -19.43% | |
| Lpl Financial Llc | 0.00% | 18,399 | $6,440 | $5,189 | -$1,251 | -19.43% | |
| Sovereign Financial Group, Inc. | 0.00% | 17,000 | $5,950 | $4,794 | -$1,156 | -19.43% | |
| Richmond Brothers, Inc. | 0.00% | 11,846 | $4,146 | $3,341 | -$805 | -19.43% | |
| Bank Of New York Mellon Corp | 0.00% | 11,218 | $3,927 | $3,163 | -$764 | -19.44% | |
| Great Valley Advisor Group, Inc. | 0.00% | 10,100 | $3,536 | $2,848 | -$688 | -19.45% | |
| Ifp Advisors, Inc | 0.00% | 10,000 | $3,500 | $2,820 | -$680 | -19.43% |
Frequently asked questions about OPTT
Who owns the most OPTT stock?
The largest holders of OPTT are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for OCEAN POWER TECHNOLOGIES INC (OPTT).
Is OPTT widely held by superinvestors?
Many widely followed stocks like OPTT appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly OPTT is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.