DOSSIER · 13F Holders · Q2 2026

POWER INTEGRATIONS INC

3 institutions still hold POWER INTEGRATIONS INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 739276953·3 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$5M
visible holders
Holders
3
filers reporting
Concentration
64.51%
SIMPLEX TRADING, LLC #1
top holder share
AI Holders Summary · Q2 2026

3 institutions reported POWER INTEGRATIONS INC in Q2 2026. SIMPLEX TRADING, LLC leads at 64.5% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
SIMPLEX TRADING, LLC
CIK 0001488542
$3M41K0.00%Q2 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$2M23K0.00%Q2 2026
03
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025