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OPTT

Ocean Power Technologies, Inc.

Company with tickers: OPTT

CIK
1378140
CUSIP
674870506
Shares Outstanding
228,023,439
13F Activity (30d)
59 filings 59 filers
Holders: 70
Total Value: $9,284,273
Total Shares: 26,526,559

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 70 13F filers · Δ vs Dec 31, 2025
Top Holder
32.3%
Jun 2023 → Mar 2026 · range 28.4% – 43.6%
−4.6 pts
Top 5
72.3%
Jun 2023 → Mar 2026 · range 72.3% – 88.0%
−3.3 pts
Top 10
87.4%
Jun 2023 → Mar 2026 · range 87.4% – 96.3%
−2.5 pts
HHI
1,572
Jun 2023 → Mar 2026 · range 1,572 – 2,472
Moderately concentrated −277

Quarterly Activity

vs Dec 31, 2025
New
24
Increased
17
Decreased
8
Sold Out
11
Unchanged
21
Holder count: +13
Institutional value: +64.9%
Shares held: +41.4%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega UBS Group AG +2,280,904 3,981,442
Mega ROYAL BANK OF CANADA +705,499 705,550
Mega BlackRock, Inc. +511,005 3,329,109
Mega GEODE CAPITAL MANAGEMENT, LLC +287,271 2,155,409
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP +276,777 1,141,315

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega JANE STREET GROUP, LLC −664,031 61,353
Mid GROUP ONE TRADING LLC −228,734 140,631
Large Cambridge Investment Research Advisors, Inc. −165,200 297,000
Mid SIMPLEX TRADING, LLC −28,701 152,315
Small TWO SIGMA SECURITIES, LLC −26,080 27,137

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 8,578,522 $3,002,482
Micro Spinnaker Investment Group, LLC 1,041,240 $364,434
Mega VANGUARD FIDUCIARY TRUST CO 1,034,207 $361,972
Large PEAK6 LLC 414,000 $144,900
Small D'Orazio & Associates, Inc. 404,677 $141,636

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 6,935,047 $2,080,513
Small HAMILTON CAPITAL PARTNERS, LLC 301,878 $90,563
Mid Virtu Financial LLC 245,368 $73,610
Mid J.W. COLE ADVISORS, INC. 73,190 $21,957
Mid Baader Bank Aktiengesellschaft 34,185 $10,255
Filter: New 24 Increased 17 Reduced 8 Sold out 11 Unchanged 21
75 of 75 shown
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega VANGUARD CAPITAL MANAGEMENT LLC $3,002,482 32.34% 8,578,522
Mega UBS Group AG $1,393,504 15.01% 3,981,442
Mega BlackRock, Inc. $1,165,188 12.55% 3,329,109
Mega GEODE CAPITAL MANAGEMENT, LLC $754,392 8.13% 2,155,409
Micro Spinnaker Investment Group, LLC $364,434 3.93% 1,041,240
Mega VANGUARD FIDUCIARY TRUST CO Bank $361,972 3.90% 1,034,207
Mega STATE STREET CORP $283,599 3.05% 810,284
Mega ROYAL BANK OF CANADA Bank $246,942 2.66% 705,550
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $166,110 1.79% 474,600
Small D'Orazio & Associates, Inc. $141,636 1.53% 404,677
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $126,495 1.36% 361,415
Mega NORTHERN TRUST CORP Bank $122,275 1.32% 349,358
Large PEAK6 LLC $112,000 1.21% 320,000
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $106,855 1.15% 305,300
Large Cambridge Investment Research Advisors, Inc. $103,950 1.12% 297,000
Mega CITADEL ADVISORS LLC $76,790 0.83% 219,400
Small ESSEX INVESTMENT MANAGEMENT CO LLC $71,817 0.77% 205,193
Mid OneDigital Investment Advisors LLC $63,794 0.69% 182,269
Mid MONETA GROUP INVESTMENT ADVISORS LLC $55,144 0.59% 157,557
Mid SIMPLEX TRADING, LLC $53,310 0.57% 152,315
Mid GROUP ONE TRADING LLC $49,220 0.53% 140,631
Mid Pinnacle Financial Partners, Inc. $35,175 0.38% 100,500
Mid Private Advisor Group, LLC $35,000 0.38% 100,000
Large PEAK6 LLC $32,900 0.35% 94,000
Large OSAIC HOLDINGS, INC. $31,552 0.34% 90,150
Mid Advisory Services Network, LLC $22,750 0.25% 65,000
Mid DIVERSIFY WEALTH MANAGEMENT, LLC $20,851 0.22% 59,575
Micro Morton Brown Family Wealth, LLC $20,399 0.22% 58,285
Mega CITADEL ADVISORS LLC $20,090 0.22% 57,400
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $17,500 0.19% 50,000
Small Legato Capital Management LLC $16,889 0.18% 48,257
Small Sargent Investment Group, LLC $15,750 0.17% 45,000
Mega JANE STREET GROUP, LLC $14,928 0.16% 42,653
Mega Vanguard Global Advisers, LLC $12,798 0.14% 36,567
Mid IMC-Chicago, LLC $12,019 0.13% 34,341
Large Rockefeller Capital Management L.P. $10,500 0.11% 30,000
Small TWO SIGMA SECURITIES, LLC Broker-Dealer $9,497 0.10% 27,137
Micro Kelsey Financial, LLC $9,450 0.10% 27,000
Micro MN Wealth Advisors, LLC $9,450 0.10% 27,000
Mid SBI Securities Co., Ltd. Broker-Dealer $8,802 0.09% 25,151
Mid GTS SECURITIES LLC Broker-Dealer $8,750 0.09% 25,000
Mega MORGAN STANLEY $7,350 0.08% 21,000
Micro VOISARD ASSET MANAGEMENT GROUP, INC. $7,350 0.08% 21,000
Mid VestGen Advisors, LLC $7,150 0.08% 20,431
Mid OpenArc Corporate Advisory, LLC $7,000 0.08% 20,000
Mid Western Wealth Management, LLC $7,000 0.08% 20,000
Large CAPTRUST FINANCIAL ADVISORS $6,637 0.07% 18,964
Mega JANE STREET GROUP, LLC $6,545 0.07% 18,700
Mid Vanguard Personalized Indexing Management, LLC $6,521 0.07% 18,634
Mega LPL Financial LLC $6,439 0.07% 18,399
Small Sovereign Financial Group, Inc. $5,950 0.06% 17,000
Micro Richmond Brothers, Inc. $4,146 0.04% 11,846
Mega Bank of New York Mellon Corp Bank $3,925 0.04% 11,218
Mid GREAT VALLEY ADVISOR GROUP, INC. $3,535 0.04% 10,100
Mid NewEdge Advisors, LLC $3,500 0.04% 10,000
Small PROMETHIUM ADVISORS,LLC $3,500 0.04% 10,000
Mid IFP Advisors, Inc $3,500 0.04% 10,000
Large Federation des caisses Desjardins du Quebec $2,065 0.02% 5,900
Mid Larson Financial Group LLC $1,614 0.02% 4,612
Small FNY Investment Advisers, LLC $1,335 0.01% 3,815
Mega WELLS FARGO & COMPANY/MN $448 0.00% 1,280
Mid Tower Research Capital LLC (TRC) $404 0.00% 1,155
Mega CITIGROUP INC $374 0.00% 1,071
Large Steward Partners Investment Advisory, LLC $211 0.00% 603
Mid Allworth Financial LP $205 0.00% 586
Large CWM, LLC $201 0.00% 575
Mid HARBOUR INVESTMENTS, INC. $105 0.00% 300
Micro Leo H. Evart, Inc. $94 0.00% 270
Small CoreCap Advisors, LLC $87 0.00% 250
Large ASSETMARK, INC $70 0.00% 200
Large JONES FINANCIAL COMPANIES LLLP $35 0.00% 100
Large TD Waterhouse Canada Inc. $15 0.00% 43
Micro Key Capital Management, INC $2 0.00% 8
Mega FMR LLC $1 0.00% 3
Small Evelyn Partners Investment Management Services Ltd $0 0.00% 2

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