DOSSIER · 13F Holders · Q1 2026
BLFY

BLUE FOUNDRY BANCORP

102 institutions still hold BLUE FOUNDRY BANCORP as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 09549B104·102 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$130M
visible holders
Holders
102
filers reporting
Concentration
17.47%
GLAZER CAPITAL, LLC #1
top holder share
AI Holders Summary · Q1 2026

102 institutions reported BLFY in Q1 2026. GLAZER CAPITAL, LLC leads at 17.5% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
GLAZER CAPITAL, LLC
CIK 0001076809
$23M1.7M0.48%Q1 2026
02
BlackRock, Inc.
CIK 0002012383
$17M1.3M0.00%Q1 2026
03
GARDNER LEWIS ASSET MANAGEMENT L P
CIK 0000941560
$13M1.0M2.92%Q1 2026
04
First Trust Capital Management L.P.
CIK 0001604488
$13M1.0M0.70%Q1 2026
05
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$10M766K0.00%Q1 2026
06
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$9M685K0.00%Q1 2026
07
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$6M421K0.00%Q1 2026
08
STATE STREET CORP
CIK 0000093751
$5M411K0.00%Q1 2026
09
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$5M359K0.00%Q1 2026
10
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$4M338K0.01%Q1 2026
11
PRELUDE CAPITAL MANAGEMENT, LLC
CIK 0001387508
$4M334K0.34%Q1 2026
12
Essex Financial Services, Inc.
CIK 0001315785
$4M321K0.24%Q1 2026
13
MANGROVE PARTNERS IM, LLC
CIK 0001535392
$3M199K0.21%Q1 2026
14
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$3M192K0.00%Q1 2026
15
Russell Investments Group, Ltd.
CIK 0001692234
$2M155K0.00%Q1 2026
16
Squarepoint Ops LLC
CIK 0001642575
$2M153K0.00%Q1 2026
17
NORTHERN TRUST CORP
CIK 0000073124· Index
$2M147K0.00%Q1 2026
18
GOLDMAN SACHS GROUP INC
CIK 0000886982
$2M124K0.00%Q1 2026
19
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$1M113K0.00%Q1 2026
20
Vanguard Portfolio Management
CIK 0002100121· Index
$1M104K0.00%Q1 2026
Page 1 of 6
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Insiders at BLUE FOUNDRY BANCORP
Goldstein Robert ThomasEly James ChristopherBeidner Elyse D.Grimbilas KennethJobes Elizabeth VarkiKinzler Patrick H.Kuntz John FLang Mirella