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Institutional ownership intelligence
Schedule 13G

POWI Schedule 13G filing by State Street

State Street reported beneficial ownership of 3.4M shares, representing 12% of POWER INTEGRATIONS INC in this filing.

FiledFeb 9, 2026
Ownership dateDec 31, 2025
Reported shares3.4M
Reported ownership12%
Ownership details

Voting and dispositive power reported in the filing

These figures describe the reporting filer’s disclosed voting and investment authority. They should be read together with the reported share count and percentage.

Sole voting power 3.2M
Shared voting power 3.2M
Sole dispositive power 3.4M
Shared dispositive power 3.4M
Compared with the prior filing

How the reported position changed

This compares the current filing with the previous tracked Schedule 13 filing from the same reporting CIK for POWI. A change between filings does not by itself establish when shares were bought or sold.

Previous filingNov 10, 2025
Reported share change+518,284
Ownership percentage change0 pts
Previous filingThis filing
Reported shares2.9M3.4M
Reported ownership12%12%
Price context

Price dates alongside the ownership filing

Price data provides market context around the disclosure. It does not identify the filer’s actual transaction price.

Close near filing date$45.79as of Feb 9, 2026
Latest tracked price$61.95as of Aug 5, 2026
Source

Original filing and accession

Use the SEC filing as the primary source when you need the complete disclosure, footnotes, exhibits, or reporting-person details.

Reporting filer
State Street
CIK
CIK0000093751
Accession
0000093751-26-000078
Form
Schedule 13G
Read the filing in context

Understand what a Schedule 13 filing does—and does not—tell you.