WSBK Winchester Bancorp, Inc./MD/: institutional ownership and insider trading
22 funds reported holding $10.9M of Winchester Bancorp, Inc./MD/ in their latest 13F filings; in Q2 2026 funds net bought $113K, with 5 new positions and 3 funds selling out; over the last 12 months insiders bought $145K and sold $0 on the open market.
Famous investors holding WSBK
- Renaissance Technologies (Renaissance Technologies): $413K, 0.0% of the portfolio
Largest institutional holders of WSBK
- MANGROVE PARTNERS IM, LLC — $2.45M
- VANGUARD CAPITAL MANAGEMENT LLC — $2.35M
- Northstar Financial Companies, Inc. — $920K
- VANGUARD GROUP INC — $750K
- Integrated Wealth Concepts LLC — $749K
- Oppenheimer & Close, LLC — $657K
- RENAISSANCE TECHNOLOGIES LLC — $413K
- GEODE CAPITAL MANAGEMENT, LLC — $382K
- RFG - Bristol Wealth Advisors, LLC — $355K
- ALLIANCEBERNSTEIN L.P. — $313K
Recent WSBK insider trades
- May 26, 2026: Merritt Edward J bought 915 shares ($11.7K)
- May 21, 2026: Carroll John A bought 50 shares ($638)
- May 7, 2026: Snow John Ingalls III bought 1,725 shares ($22.1K)
- May 5, 2026: Snow John Ingalls III bought 6,110 shares ($78.6K)
5%+ owners
- Winchester Bancorp, MHC: 55.0% (Schedule 13D, filed May 14, 2025)