Winchester Bancorp, Inc.
WSBK- Exchange
- Nasdaq
- Industry
- Savings Institutions, Not Federally Chartered
- SEC CIK
- 0002047235
No open-market purchases or sales by Winchester Bancorp, Inc. insiders were filed in the last 90 days; 21 institutions reported holding it in 13F filings for Q2 2026, worth $9.96M in total; no superinvestor holds it.
Q3 2025 vs. Q2 2025
How the institutions holding Winchester Bancorp, Inc. changed between Q2 2025 and Q3 2025.
All holders in Q3 2025All holders in Q2 2025
| Measure | Q2 2025 | Q3 2025 | Change |
|---|---|---|---|
| Holders | 18 | 22 | +4 |
| Shares | 620.2K | 708.3K | +88.0K (+14.2%) |
| Value | $5.55M | $6.77M | +$1.22M (+21.9%) |
New holders (4)
Institutions that held Winchester Bancorp, Inc. at the end of Q3 2025 but not at the end of Q2 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Northstar Financial Companies, Inc. | 70,000 | $668.5K | 0.62% |
| Morgan Stanley | 4,000 | $38.2K | 0.00% |
| Eastern Bank | 2,500 | $23.9K | 0.00% |
| Citigroup Inc | 1 | $10 | 0.00% |
Sold out (0)
Institutions that held Winchester Bancorp, Inc. at the end of Q2 2025 and filed for Q3 2025 without it.
None.