Winchester Bancorp
WSBK
22 hedge funds and large institutions have $6.77M invested in Winchester Bancorp in 2025 Q3 according to their latest regulatory filings, with 4 funds opening new positions, 5 increasing their positions, 7 reducing their positions, and closing their positions.
22% more funds holding
Funds holding: 18 → 22 (+4)
22% more capital invested
Capital invested by funds: $5.55M → $6.77M (+$1.22M)
0.95% more ownership
Funds ownership: 6.67% → 7.62% (+0.95%)
29% less repeat investments, than reductions
Existing positions increased: 5 | Existing positions reduced: 7
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
NFC
Northstar Financial Companies
Conshohocken,
Pennsylvania
|
+$661K |
| 2 |
MI
M3F Inc
Salt Lake City,
Utah
|
+$219K |
| 3 |
MP
Mangrove Partners
Greenwich,
Connecticut
|
+$169K |
| 4 |
SPIA
Steward Partners Investment Advisory
New York
|
+$77.9K |
| 5 |
Morgan Stanley
New York
|
+$37.8K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
-$146K |
| 2 |
Bank of America
Charlotte,
North Carolina
|
-$94.3K |
| 3 |
UBS Group
Zurich,
Switzerland
|
-$50.1K |
| 4 |
LA
Lynch & Associates
Newburgh,
Indiana
|
-$47.2K |
| 5 |
Millennium Management
New York
|
-$40.8K |
WSBK Hedge Fund Activity: Q3 2025 in Review
22 of the 7,645 institutional investors tracked by Wall St. Rank reported a position in Winchester Bancorp (WSBK) for Q3 2025, worth a combined $6.77M — up 22% from $5.55M a quarter earlier.
Buyers outnumbered sellers: 4 funds opened new WSBK positions and 0 closed out — a net gain of 4 holders — while 5 added to existing stakes and 7 trimmed.
The largest buyer was Northstar Financial Companies, opening a new position worth an estimated $661K. The largest seller was Citadel Advisors, cutting an estimated $146K.
- 22 institutional investors held Winchester Bancorp (WSBK) as of Q3 2025, up from 18 in Q2 2025.
- Funds reported $6.77M of Winchester Bancorp stock for Q3 2025, up 22% quarter-over-quarter.
- 4 funds opened new Winchester Bancorp positions in Q3 2025 and 0 closed out, a net change of +4 holders.
- The largest Winchester Bancorp buyer in Q3 2025 was Northstar Financial Companies, an estimated $661K added.
- The largest Winchester Bancorp seller in Q3 2025 was Citadel Advisors, an estimated $146K sold.
Based on aggregated 13F filings for Q3 2025.