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WSBK WINCHESTER BANCORP INC

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COM (common), issuer CIK 2047235

18 managers (19 13F filers) reported a position in WSBK shares at 2026-03-31, 750,531 shares in all. 0 filers opened a position and 3 filers sold out during the quarter.

Managers
18
13F filers
19
New
0
Added
3
Reduced
3
Sold out
3
Shares held by filers
750,531

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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
VANGUARD GROUP INCgroup of 2 filers holding204,075$2.59MnewTimeline
MANGROVE PARTNERS IM, LLC186,201$2.36M0.19%013F-HRTimeline
Northstar Financial Companies, Inc.70,000$889K0.71%013F-HRTimeline
Integrated Wealth Concepts LLC57,000$724K0.01%013F-HRTimeline
Oppenheimer & Close, LLC50,000$635K0.4%013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC31,000$394K<0.01%+4,49813F-HRTimeline
M3F, Inc.24,586$312K0.08%-119,40013F-HRTimeline
ALLIANCEBERNSTEIN L.P.24,656$258K<0.01%013F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC20,000$254K<0.01%013F-HRTimelineGroup
Steward Partners Investment Advisory, L…19,127$243K<0.01%013F-HRTimeline
EagleClaw Capital Managment, LLC16,000$203K0.03%013F-HRTimeline
LPL Financial LLC15,500$197K<0.01%013F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC13,920$177K<0.01%-12,58213F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC11,543$147K<0.01%-4,53913F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY4,000$50.8K<0.01%013F-HRTimelineGroup
EASTERN BANK2,500$31.8K<0.01%013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…294$3.73K<0.01%+3913F-HRTimelineGroup
UBS Group AGin group UBS Group AG129$1.64K<0.01%+12613F-HRTimelineGroup