DOSSIER · 13F Holders · Q2 2025

WESTERN MIDSTREAM

1 institutions still hold WESTERN MIDSTREAM as of Q2 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 958254104·1 13F holders·last filed Jun 30, 2025
Market cap
13F value held
$1M
visible holders
Holders
1
filers reporting
Concentration
100.00%
Grassi Investment Management #1
top holder share
AI Holders Summary · Q2 2025

1 institutions reported WESTERN MIDSTREAM in Q2 2025. Grassi Investment Management leads at 100.0% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
Grassi Investment Management
CIK 0001608531
$1M30K0.09%Q2 2025