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WSBK WINCHESTER BANCORP INC

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COM (common), issuer CIK 2047235

21 managers (21 13F filers) reported a position in WSBK shares at 2025-12-31, 771,277 shares in all. 2 filers opened a position and 3 filers sold out during the quarter.

Managers
21
13F filers
21
New
2
Added
6
Reduced
5
Sold out
3
Shares held by filers
771,277

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
MANGROVE PARTNERS IM, LLC186,201$1.95M0.16%-74813F-HRTimeline
M3F, Inc.143,986$1.5M0.41%+61,43413F-HRTimeline
VANGUARD GROUP INCin group VANGUARD GROUP INC71,736$750K<0.01%+2,56913F-HRTimelineGroup
Northstar Financial Companies, Inc.70,000$732K0.58%013F-HRTimeline
Integrated Wealth Concepts LLC57,000$596K0.01%+2,00013F-HRTimeline
Oppenheimer & Close, LLC50,000$522K0.36%013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC26,502$277K<0.01%new13F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC26,502$277K<0.01%+2,60613F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.24,656$258K<0.01%new13F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC20,999$219K<0.01%-5,43913F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC20,000$209K<0.01%013F-HRTimelineGroup
Steward Partners Investment Advisory, L…19,127$200K<0.01%+8,37713F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC16,082$168K<0.01%-2,86513F-HRTimelineGroup
EagleClaw Capital Managment, LLC16,000$167K0.02%013F-HRTimeline
LPL Financial LLC15,500$162K<0.01%013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY4,000$41.8K<0.01%013F-HR/ATimelineGroup
EASTERN BANK2,500$26.1K<0.01%013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…255$2.67K<0.01%-10013F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/227$2.37K<0.01%+213F-HRTimelineGroup
UBS Group AGin group UBS Group AG3$31<0.01%-7,79813F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC1$10<0.01%013F-HRTimelineGroup