Who Owns WINCHESTER BANCORP INC (WSBK)? -- Institutional Holders (2026-06-30)

1 institutions reported holding $52,560 of WINCHESTER BANCORP INC (WSBK) in SEC 13F filings for 2026-06-30. Largest institutional holders: EASTERN BANK ($52,560). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1EASTERN BANK$52,5604,000Added

Source: SEC Form 13F filings · as of 2026-06-30