Who Owns Winchester Bancorp, Inc. Common Stock (WSBK)?Hedge Fund & Institutional Holders
Institutional Holders
25
as of Q4 2025
Total Institutional Value
$1.00000052200026e+37T
% of Float Held
—
QoQ Change in Holders
+4 / -2
Price History
WSBK — Biggest New Institutional Buyers This Quarter
| Fund | Action | Shares Added | Value Added |
|---|---|---|---|
| EASTERN BANK | New Position | +3K | +$26.0M |
| M3 Wealth Management, LLC | New Position | +70K | +$731K |
| M3F, Inc. | Increased | +61K | +$717K |
| RENAISSANCE TECHNOLOGIES LLC | New Position | +27K | +$0 |
| ALLIANCEBERNSTEIN L.P. | New Position | +25K | +$0 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | +3K | +$0 |
| BANK OF AMERICA CORP /DE/ | Increased | +2 | +$-1K |
| VANGUARD GROUP INC | Increased | +3K | +$-662K |
| Steward Partners Investment Advisory, LLC | Increased | +8K | +$-102.7M |
| Integrated Wealth Concepts LLC | Increased | +2K | +$-525.3M |
WSBK — Institutions Reducing or Closing Positions
| Fund | Action | Shares Sold | Value Sold |
|---|---|---|---|
| MANGROVE PARTNERS IM, LLC | Decreased | -748 | -$785.4M |
| CITADEL ADVISORS LLC | Decreased | -5K | -$253.5M |
| Stilwell Value LLC | Closed Position | -25K | -$238.8M |
| MILLENNIUM MANAGEMENT LLC | Decreased | -3K | -$181.7M |
| UBS Group AG | Decreased | -8K | -$74.5M |
| Tower Research Capital LLC (TRC) | Decreased | -100 | -$3.4M |
| LYNCH & ASSOCIATES/IN | Closed Position | -13K | -$125K |
Top Institutional Holders(Q4 2025)
WSBK Institutional Ownership History
| Quarter | Holders | Total Value | Change |
|---|---|---|---|
| Q4 2025 | 22 | $1.6B | +2 |
| Q3 2025 | 20 | $4.7B | +2 |
| Q2 2025 | 18 | $3.9B | — |
Similar Stocks by Institutional Ownership
As of Q4 2025, 25 institutional investors hold WSBK (Winchester Bancorp, Inc. Common Stock). The largest holder is MANGROVE PARTNERS IM, LLC with $1.0B in shares. This quarter, 4 institutions opened new positions and 2 closed their positions.
Frequently Asked Questions
How many hedge funds own WSBK?
As of Q4 2025, 25 institutional investors report holding WSBK (Winchester Bancorp, Inc. Common Stock) in their 13F filings.
Who is the largest institutional holder of WSBK?
The largest institutional holder of WSBK is MANGROVE PARTNERS IM, LLC with $1.0B in shares.
Is institutional ownership of WSBK increasing or decreasing?
This quarter, 4 institutions opened new positions in WSBK and 2 closed their positions.