Winchester Bancorp, Inc./MD/ (WSBK) — Institutional Holders, Q2 2026
21 institutional investment managers reported a WSBK position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $10.3M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
WSBK in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- Integrated Wealth ConceptsAdded · +25,000 sh+$328.5K
- GEODE CAPITAL MANAGEMENTAdded · +15,117 sh+$198.6K
- BlackRockNew · +14,202 sh+$186.6K
- RFG - Bristol Wealth AdvisorsNew · +10,158 sh+$133.5K
- SachettaNew · +8,000 sh+$105.1K
Biggest sellers
- M3FSold out · -24,586 sh-$323.1K
- MILLENNIUM MANAGEMENTSold out · -11,543 sh-$151.7K
- MORGAN STANLEYSold out · -4,000 sh-$52.6K
- VANGUARD CAPITAL MANAGEMENTTrimmed · -2,572 sh-$33.8K
- Tower Research Capital (TRC)Trimmed · -137 sh-$1.8K
WSBK 13F holders ranked 1–21 of 21
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | MANGROVE PARTNERS IM#1 · 186,201 sh | 186,201 | $2.4M | 0.16% | 0.0% |
| 2 | VANGUARD CAPITAL MANAGEMENT#2 · 178,941 sh | 178,941 | $2.4M | <0.01% | -1.4% |
| 3 | Integrated Wealth Concepts#3 · 82,000 sh | 82,000 | $1.1M | <0.01% | +43.9% |
| 4 | Northstar Financial Companies#4 · 70,000 sh | 70,000 | $919.8K | 0.62% | 0.0% |
| 5 | Oppenheimer & Close#5 · 50,000 sh | 50,000 | $657.0K | 0.41% | 0.0% |
| 6 | RENAISSANCE TECHNOLOGIES#6 · 31,400 sh | 31,400 | $412.6K | <0.01% | +1.3% |
| 7 | GEODE CAPITAL MANAGEMENT#7 · 29,037 sh | 29,037 | $381.8K | 0.00% | +108.6% |
| 8 | ALLIANCEBERNSTEIN L.P.#8 · 24,656 sh | 24,656 | $313.1K | <0.01% | 0.0% |
| 9 | VANGUARD FIDUCIARY#9 · 22,708 sh | 22,708 | $298.4K | <0.01% | +0.6% |
| 10 | RAYMOND JAMES FINANCIAL#10 · 20,000 sh | 20,000 | $262.8K | <0.01% | 0.0% |
| 11 | Steward Partners Investment Advisory#11 · 19,127 sh | 19,127 | $251.3K | <0.01% | 0.0% |
| 12 | EagleClaw Capital Managment#12 · 16,000 sh | 16,000 | $210.2K | 0.03% | 0.0% |
| 13 | LPL Financial#13 · 15,500 sh | 15,500 | $203.7K | 0.00% | 0.0% |
| 14 | BlackRock#14 · 14,202 sh | 14,202 | $186.6K | 0.00% | New |
| 15 | RFG - Bristol Wealth Advisors#15 · 10,158 sh | 10,158 | $133.5K | — | New |
| 16 | Sachetta#16 · 8,000 sh | 8,000 | $105.1K | 0.05% | New |
| 17 | EASTERN BANK#17 · 4,000 sh | 4,000 | $52.6K | — | +60.0% |
| 18 | ROYAL BANK OF CANADA#18 · 2,000 sh | 2,000 | $26.0K | 0.00% | New |
| 19 | Tower Research Capital (TRC)#19 · 157 sh | 157 | $2.1K | <0.01% | -46.6% |
| 20 | UBS Group AG#20 · 18 sh | 18 | $237.00 | 0.00% | -86.0% |
| 21 | OSAIC#21 · 16 sh | 16 | $210.00 | 0.00% | New |
Funds that sold out of WSBK in Q2 2026 (3)
Held WSBK at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| M3F24,586 sh | 24,586 | $312.0K |
| MILLENNIUM MANAGEMENT11,543 sh | 11,543 | $146.6K |
| MORGAN STANLEY4,000 sh | 4,000 | $50.8K |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.