OPTT · AMEX · Electrical Equipment & Parts

Ocean Power Technologies (OPTT)

Autonomous offshore power, uncrewed vessels, and maritime-domain-awareness systems.

$2.15
After hours+0.01 (+0.47%)
At close$2.14(−6.96%)

13F · 13D/G · Form 4

Institutions17.06%1.10M shares
90 holders · as of Jun 30, 2026
Other82.94%5.37M shares
remainder

6.47M company shares as of Sep 15, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

Two share counts disagree (300.2K in the company's Sep 22, 2026 report, 6.47M elsewhere); stakes use the report.

13F · 13D/G · Form 4

HolderStakeSharesDate
Vanguard Capital Management LLCInstitution
4.60%8.92Mas of Jun 30, 2026
UBS Group AGInstitution
3.54%6.87Mas of Jun 30, 2026
BlackRock, Inc.Institution
1.72%3.33Mas of Jun 30, 2026
Polar Asset Management Partners Inc.Institution
1.57%3.04Mas of Jun 30, 2026
Geode Capital Management, LLCInstitution
1.13%2.20Mas of Jun 30, 2026
Vanguard Fiduciary Trust CoInstitution
0.71%1.39Mas of Jun 30, 2026
Spinnaker Investment Group, LLCInstitution
0.54%1.04Mas of Jun 30, 2026
State Street CorpInstitution
0.51%982,684as of Jun 30, 2026
Cambridge Investment Research Advisors, Inc.Institution
0.36%697,003as of Jun 30, 2026
Northern Trust CorpInstitution
0.27%519,151as of Jun 30, 2026
Royal Bank of CanadaInstitution
0.27%518,050as of Jun 30, 2026
Hamilton Capital Partners, LLCInstitution
0.26%500,195as of Jun 30, 2026
Hightower Advisors, LLCInstitution
0.18%350,100as of Jun 30, 2026
Susquehanna International Group, LLPInstitution
0.13%256,667as of Jun 30, 2026
Essex Investment Management Co LLCInstitution
0.11%204,864as of Jun 30, 2026
D'Orazio & Associates, Inc.Institution
0.10%197,503as of Jun 30, 2026
Resources Investment Advisors, LLC.Institution
0.08%159,532as of Jun 30, 2026
Pinnacle Financial Partners, Inc.Institution
0.07%130,500as of Jun 30, 2026
Simplex Trading, LLCInstitution
0.07%129,786as of Jun 30, 2026
Diversify Advisory Services, LLCInstitution
0.06%119,995as of Jun 30, 2026
Diversify Wealth Management, LLCInstitution
0.06%119,995as of Jun 30, 2026
Imc-Chicago, LLCInstitution
0.05%103,241as of Jun 30, 2026
Group One Trading, L.P.Institution
0.05%99,787as of Jun 30, 2026
Colony Group, LLCInstitution
0.04%81,550as of Jun 30, 2026
Advisor Group Holdings, Inc.Institution
0.04%70,203as of Jun 30, 2026

13F, as of Jun 30, 2026

90 holders · 33.11M shares · 24 new positions · 43 increased · 13 reduced · 10 closed

HolderShares% outstandingChg q/qFiled
Vanguard Capital Management LLC8.92M137.86%+340.6KAug 13, 2026
UBS Group AG6.87M106.18%+2.89MAug 13, 2026
BlackRock, Inc.3.33M51.46%−1Aug 7, 2026
Polar Asset Management Partners Inc.3.04M47.04%+3.04MnewAug 14, 2026
Geode Capital Management, LLC2.20M33.98%+43.1KAug 12, 2026
Vanguard Fiduciary Trust Co1.39M21.44%+353.2KAug 13, 2026
Spinnaker Investment Group, LLC1.04M16.09%0Jul 10, 2026
State Street Corp982.7K15.19%+172.4KAug 7, 2026

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Alumni Capital LP,9.48%13GSep 24, 2024

Form 4

Latest trades

Nothing filed in the last 12 months.

House and Senate disclosures

Not reported.