DOSSIER · 13F Holders · Q1 2026
WSBK
WINCHESTER BANCORP INC
22 institutions still hold WINCHESTER BANCORP INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.
CUSIP 97269D103·22 13F holders·last filed Mar 31, 2026
AI Holders Summary · Q1 2026
22 institutions reported WSBK in Q1 2026. MANGROVE PARTNERS IM, LLC leads at 24.1% of the visible book.
Top holders
Sorted by position value. Source: SEC EDGAR 13F-HR filings.
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