# WINCHESTER BANCORP INC COM

WINCHESTER BANCORP INC COM is a security (CUSIP 97269D103) tracked across SEC portfolio filings. 21 institutional managers reported $7.6M on Form 13F as of 2026-06-30; 2 registered fund positions totaling $627K via N-PORT as of 2026-03-31.

## Summary

- Issuer: WINCHESTER BANCORP INC
- Class: COM
- CUSIP: 97269D103
- Asset category: EC
- 13F holders: 21
- 13F value: $7.6M
- 13F period: 2026-06-30
- N-PORT fund positions: 2
- N-PORT value: $627K
- N-PORT report: 2026-03-31

## Top institutional holders (Form 13F)

_Showing 15 of 21 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [MANGROVE PARTNERS](https://search.stillhousedata.com/firm/162296) | New York, NY | $2.4M | 186,201 |
| [Northstar Financial Companies, Inc.](https://search.stillhousedata.com/firm/119396) | CONSHOHOCKEN, PA | $920K | 70,000 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $750K | 71,736 |
| [Integrated Wealth Concepts LLC](https://search.stillhousedata.com/firm/284656) | WALTHAM, MA | $724K | 57,000 |
| Oppenheimer & Close, LLC | NEW YORK, NY | $635K | 50,000 |
| [RENAISSANCE TECHNOLOGIES LLC](https://search.stillhousedata.com/firm/106661) | NEW YORK, NY | $394K | 31,000 |
| [ALLIANCEBERNSTEIN L.P.](https://search.stillhousedata.com/firm/108477) | NASHVILLE, TN | $258K | 24,656 |
| RAYMOND JAMES FINANCIAL INC | ST. PETERSBURG, FL | $254K | 20,000 |
| [Steward Partners Investment Advisory, LLC](https://search.stillhousedata.com/firm/283004) | NEW YORK, NY | $243K | 19,127 |
| [EagleClaw Capital Managment, LLC](https://search.stillhousedata.com/firm/134045) | BOSTON, MA | $203K | 16,000 |
| [LPL Financial LLC](https://search.stillhousedata.com/firm/6413) | FORT MILL, SC | $197K | 15,500 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $177K | 13,920 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $147K | 11,543 |
| [RFG - Bristol Wealth Advisors, LLC](https://search.stillhousedata.com/firm/330145) | TAUNTON, MA | $133K | 10,158 |
| [Sachetta, LLC](https://search.stillhousedata.com/firm/145713) | LYNNFIELD, MA | $105K | 8,000 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $567K | 0.07% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $60K | 0.01% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/97269D103.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.