WINCHESTER BANCORP INC (WSBK)
Institutional ownership reported to the SEC as of Q2 2026, across 5 quarters.
Institutions report 784,121 shares against 9,295,376 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Share count carried from an earlier filing (cy2026q1i).
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| MANGROVE PARTNERS IM, LLC | $2.4M | 186,201 | 0.16% | 5q | HELD |
| VANGUARD CAPITAL MANAGEMENT LLC | $2.4M | 178,941 | 0.00% | 2q | -1.4%-$33.8K |
| Integrated Wealth Concepts LLC | $1.1M | 82,000 | 0.01% | 5q | +43.9%+$328.5K |
| Northstar Financial Companies, Inc. | $919.8K | 70,000 | 0.62% | 4q | HELD |
| Oppenheimer & Close, LLC | $657.0K | 50,000 | 0.41% | 5q | HELD |
| RENAISSANCE TECHNOLOGIES LLC | $412.6K | 31,400 | 0.00% | 3q | +1.3%+$5.3K |
| GEODE CAPITAL MANAGEMENT, LLC | $381.8K | 29,037 | 0.00% | 5q | +108.6%+$198.8K |
| ALLIANCEBERNSTEIN L.P. | $313.1K | 24,656 | 0.00% | 3q | HELD |
| VANGUARD FIDUCIARY TRUST CO | $298.4K | 22,708 | 0.00% | 2q | +0.6%+$1.9K |
| RAYMOND JAMES FINANCIAL INC | $262.8K | 20,000 | 0.00% | 5q | HELD |
| Steward Partners Investment Advisory, LLC | $251.3K | 19,127 | 0.00% | 5q | HELD |
| EagleClaw Capital Managment, LLC | $210.2K | 16,000 | 0.03% | 5q | HELD |
| LPL Financial LLC | $203.7K | 15,500 | 0.00% | 5q | HELD |
| BlackRock, Inc. | $186.6K | 14,202 | 0.00% | new | NEW |
| RFG - Bristol Wealth Advisors, LLC | $133.5K | 10,158 | 0.03% | new | NEW |
| Sachetta, LLC | $105.1K | 8,000 | 0.05% | new | NEW |
| EASTERN BANK | $52.6K | 4,000 | 0.00% | 4q | +60.0%+$19.7K |
| ROYAL BANK OF CANADA | $26.0K | 2,000 | 0.00% | new | NEW |
| Tower Research Capital LLC (TRC) | $2.1K | 157 | 0.00% | 5q | -46.6%-$1.8K |
| UBS Group AG | $237 | 18 | 0.00% | 5q | -86.0%-$1.5K |
| OSAIC HOLDINGS, INC. | $210 | 16 | 0.00% | new | NEW |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 21 | $10.3M | 784,121 | 5 | 5 | 3 | 0.0% |
| Q1 2026 | 18 | $9.2M | 725,945 | 0 | 3 | 2 | 0.0% |
| Q4 2025 | 20 | $6.6M | 627,291 | 2 | 5 | 4 | 0.0% |
| Q3 2025 | 21 | $6.0M | 625,712 | 4 | 3 | 7 | 0.0% |
| Q2 2025 | 17 | $5.0M | 560,913 | 17 | 0 | 0 | 0.0% |