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WSBK — WINCHESTER BANCORP INC

Reported value held$2.15M
Funds holding (latest)10
SectorFinancials
Funds holding (Q2 2026)4
Institutional value$981.26K · 74.66K sh
New / Add / Cut / Exit1 / 2 / 1 / 2
Top-5 / Top-10 concentration100.0% / 100.0%
Institutional holdings change Accumulating +23.2% (+14.06K sh)
Institutional value change Up +27.5%

As of Q2 2026, 4 SEC-registered investment managers reported holding WSBK (WINCHESTER BANCORP INC) in their latest 13F filings, with a combined reported value of $981.26K across 74.66K shares. That is +23.2% by share count (+14.06K shares) versus the previous quarter, while reported value moved +27.5%. Ownership is concentrated: the five largest holders account for 100.0% of reported value and the top ten for 100.0%.

Compared with the prior quarter, 1 opened new positions, 2 added to existing stakes, 1 trimmed, 2 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

WSBK is classified in the Financials sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

Q2 2026 — 4 funds

FundSharesValuePortfolio WeightChange
Renaissance Technologies history 31.40K $412.60K 0.00% Add
Geode Capital Management history 29.04K $381.81K 0.00% Add
BlackRock Inc history 14.20K $186.61K 0.00% New
UBS Group AG history 18 $237 0.00% Reduce

Q1 2026 — 5 funds

FundSharesValuePortfolio WeightChange
Renaissance Technologies history 31.00K $393.70K 0.00% Add
Geode Capital Management history 13.92K $177.02K 0.00% Reduce
Millennium Management history 11.54K $146.60K 0.00% Reduce
Morgan Stanley history 4.00K $50.80K 0.00% Hold
UBS Group AG history 129 $1.64K 0.00% Add

Q4 2025 — 9 funds

FundSharesValuePortfolio WeightChange
Vanguard Group history 71.74K $749.64K 0.00% Add
Renaissance Technologies history 26.50K $276.95K 0.00% New
Geode Capital Management history 26.50K $276.94K 0.00% Add
Citadel Advisors history 21.00K $219.44K 0.00% Reduce
Millennium Management history 16.08K $168.06K 0.00% Reduce
Morgan Stanley history 4.00K $41.80K 0.00% Hold
Bank of America Corp history 227 $2.37K 0.00% Add
UBS Group AG history 3 $31 0.00% Reduce
Citigroup Inc history 1 $10 0.00% Hold

Q3 2025 — 8 funds

FundSharesValuePortfolio WeightChange
Vanguard Group history 69.17K $663.31K 0.00% Hold
Citadel Advisors history 26.44K $253.54K 0.00% Reduce
Geode Capital Management history 23.90K $229.16K 0.00% Add
Millennium Management history 18.95K $181.70K 0.00% Reduce
UBS Group AG history 7.80K $74.50K 0.00% Reduce
Morgan Stanley history 4.00K $38.20K 0.00% New
Bank of America Corp history 225 $2.15K 0.00% Reduce
Citigroup Inc history 1 $10 0.00% New

Q2 2025 — 6 funds

FundSharesValuePortfolio WeightChange
Vanguard Group history 68.98K $617.39K 0.00% New
Citadel Advisors history 41.93K $375.26K 0.00% New
Millennium Management history 23.27K $208.28K 0.00% New
Geode Capital Management history 20.99K $187.88K 0.00% New
UBS Group AG history 13.11K $117.30K 0.00% New
Bank of America Corp history 10.21K $91.39K 0.00% New

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 10 funds)

FundQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025
Renaissance Technologies 31.40K 31.00K 26.50K — —
Geode Capital Management 29.04K 13.92K 26.50K 23.90K 20.99K
BlackRock Inc 14.20K — — — —
UBS Group AG 18 129 3 7.80K 13.11K
Citadel Advisors — — 21.00K 26.44K 41.93K
Morgan Stanley — 4.00K 4.00K 4.00K —
Bank of America Corp — — 227 225 10.21K
Citigroup Inc — — 1 1 —
Millennium Management — 11.54K 16.08K 18.95K 23.27K
Vanguard Group — — 71.74K 69.17K 68.98K

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