Winchester Bancorp, Inc.: which funds bought and sold

Institutions that bought and sold Winchester Bancorp shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 10 institutions that filed 13F reports for both quarters added to or opened positions in Winchester Bancorp, and 6 cut or closed them. Together they added a net 34K shares, +4.5% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 11K shares (−4.4%); index fund managers were net buyers of 27K shares (+12.3%). 5 opened a new position and 3 sold out entirely.

Bought, Q2 2026 10 institutions, 5 of them new holders Sold, Q2 2026 6 institutions, 3 of them sold out

Net change, all compared +34K shares (+4.5%)

Net change, active managers −11K shares (−4.4%), 1 bought, 1 sold

Buyers versus sellers

institutions compared, 24

10 bought 8 6 sold

Active managers and hedge funds 1 bought · 1 sold · −11K

Index fund managers 3 bought · 1 sold · +27K

Other institutions 6 bought · 4 sold · +18K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Integrated Wealth Concepts LLC	+25K +43.9%	82K	$1.1M
Geode Capital Management, LLC Index funds	+15K +108.6%	29K	$381,809
Blackrock, Inc. Index funds	+14K New position	14K	$186,614
Rfg - Bristol Wealth Advisors, LLC	+10K New position	10K	$133,476
Sachetta, LLC	+8,000 New position	8,000	$105,120
Royal Bank Of Canada	+2,000 New position	2,000	$26,000
Eastern Bank	+1,500 +60.0%	4,000	$52,560
Renaissance Technologies LLC Hedge fund	+400 +1.3%	31K	$412,596
Vanguard Fiduciary Trust Co Index funds	+146 +0.6%	23K	$298,383
Osaic Holdings, Inc.	+16 New position	16	$210

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Renaissance Technologies LLC Hedge fund	+400 +1.3%	31K	$412,596

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
M3F, Inc.	−25K Sold out	0	—
Millennium Management LLC Hedge fund	−12K Sold out	0	—
Morgan Stanley	−4,000 Sold out	0	—
Vanguard Capital Management LLC Index funds	−2,572 −1.4%	179K	$2.4M
Tower Research Capital LLC (TRC)	−137 −46.6%	157	$2,063
UBS Group AG	−111 −86.0%	18	$237

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Millennium Management LLC Hedge fund	−12K Sold out	0	—

New positions

largest by value

Institution	Shares	Value June 30, 2026
Blackrock, Inc.Index funds	14K	$186,614
Rfg - Bristol Wealth Advisors, LLC	10K	$133,476
Sachetta, LLC	8,000	$105,120
Royal Bank Of Canada	2,000	$26,000
Osaic Holdings, Inc.	16	$210

Sold out

largest by value

Institution	Shares	Value March 31, 2026
M3F, Inc.	25K	$312,000
Millennium Management LLCHedge fund	12K	$146,596
Morgan Stanley	4,000	$50,800

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 21
Ten largest holders: 88.6%
Index fund managers: 31.2%
Active managers and hedge funds: 30.9%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	1	1	0	1	−11K	−4.4%
Index fund managers	3	1	1	0	+27K	+12.3%
Other institutions	6	4	4	2	+18K	+6.4%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

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