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WSBK

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.

New
Increased
Maintained
Reduced
Closed

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

Holders
22
Holders Change
+4
Holders Change %
+22.22%
% of All Funds
0.29%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
4
Increased
5
Reduced
7
Closed
–
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
NFC
Northstar Financial Companies
Pennsylvania
+$661K
2
MI
M3F Inc
Utah
+$219K
3
MP
Mangrove Partners
Connecticut
+$169K
4
SPIA
Steward Partners Investment Advisory
New York
+$77.9K
5
Morgan Stanley
Morgan Stanley
New York
+$37.8K

Top Sellers

Rank Fund Capital Flow
1
Citadel Advisors
Citadel Advisors
Florida
-$146K
2
Bank of America
Bank of America
North Carolina
-$94.3K
3
UBS Group
UBS Group
Switzerland
-$50.1K
4
LA
Lynch & Associates
Indiana
-$47.2K
5
Millennium Management
Millennium Management
New York
-$40.8K
Name Holding Trade Value Shares
Change 		Change in
Stake
MP
1
Mangrove Partners
Connecticut
$1.79M +$169K +17,851 +11%
MI
2
M3F Inc
Utah
$788K +$219K +23,229 +39%
NFC
3
Northstar Financial Companies
Pennsylvania
$669K +$661K +70,000 New
Vanguard Group
4
Vanguard Group
Pennsylvania
$663K +$1.75K +185 +0.3%
IWC
5
Integrated Wealth Concepts
Massachusetts
$525K – – –
OC
6
Oppenheimer & Close
New York
$478K – – –
Citadel Advisors
7
Citadel Advisors
Florida
$254K -$146K -15,491 -37%
SV
8
Stilwell Value
New York
$239K – – –
Geode Capital Management
9
Geode Capital Management
Massachusetts
$229K +$27.4K +2,904 +14%
Raymond James Financial
10
Raymond James Financial
Florida
$191K – – –
Millennium Management
11
Millennium Management
New York
$182K -$40.8K -4,324 -19%
ECM
12
EagleClaw Capital Management
Massachusetts
$153K – – –
LPL Financial
13
LPL Financial
California
$148K – – –
LA
14
Lynch & Associates
Indiana
$126K -$47.2K -5,000 -27%
SPIA
15
Steward Partners Investment Advisory
New York
$103K +$77.9K +8,250 +330%
BMC
16
Benin Management Corp
Connecticut
$95.5K -$4.72K -500 -5%
UBS Group
17
UBS Group
Switzerland
$74.5K -$50.1K -5,305 -40%
Morgan Stanley
18
Morgan Stanley
New York
$38.2K +$37.8K +4,000 New
EB
19
Eastern Bank
Massachusetts
$23.9K +$23.6K +2,500 New
TRCT
20
Tower Research Capital (TRC)
New York
$3.39K -$2.7K -286 -45%
Bank of America
21
Bank of America
North Carolina
$2.15K -$94.3K -9,986 -98%
Citigroup
22
Citigroup
New York
$10 +$9 +1 New

WSBK Hedge Fund Activity: Q3 2025 in Review

22 of the 7,631 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.