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NB Bancorp

145 hedge funds and large institutions have $339M invested in NB Bancorp in 2025 Q3 according to their latest regulatory filings, with 28 funds opening new positions, 44 increasing their positions, 45 reducing their positions, and 13 closing their positions.

New
Increased
Maintained
Reduced
Closed

30,057% more call options, than puts

Call options by funds: $2.11M | Put options by funds: $7K

115% more first-time investments, than exits

New positions opened: 28 | Existing positions closed: 13

12% more funds holding

Funds holding: 130145 (+15)

2.05% more ownership

Funds ownership: 46.14%48.19% (+2.1%)

1% more capital invested

Capital invested by funds: $334M → $339M (+$4.44M)

2% less repeat investments, than reductions

Existing positions increased: 44 | Existing positions reduced: 45

Holders
145
Holders Change
+15
Holders Change %
+11.54%
% of All Funds
1.9%
Holding in Top 10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
28
Increased
44
Reduced
45
Closed
13
Calls
$2.11M
Puts
$7K
Net Calls
+$2.1M
Net Calls Change
+$1.23M
Name Holding Trade Value Shares
Change
Change in
Stake
ACM
101
Aquatic Capital Management
Illinois
$211K +$219K +11,955 New
FHA
102
Flagship Harbor Advisors
Massachusetts
$210K
Manulife (Manufacturers Life Insurance)
103
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$206K -$15.6K -852 -7%
Ohio Public Employees Retirement System (OPERS)
104
Ohio Public Employees Retirement System (OPERS)
Ohio
$190K
PA
105
PharVision Advisers
Florida
$189K +$197K +10,721 New
GPW
106
Gray Private Wealth
Massachusetts
$187K
BC
107
Barrett & Company
Rhode Island
$177K
New York State Common Retirement Fund
108
New York State Common Retirement Fund
New York
$177K
HA
109
Harbor Advisors
Florida
$177K +$183K +10,000 New
AFS
110
AFG Fiduciary Services
Massachusetts
$176K +$183K +10,000 New
Zurich Cantonal Bank
111
Zurich Cantonal Bank
Switzerland
$171K +$66K +3,600 +59%
PFSRSONJ
112
Police & Firemen's Retirement System of New Jersey
New Jersey
$163K
QT
113
Quantbot Technologies
New York
$156K +$162K +8,822 New
KK
114
KLP Kapitalforvaltning
Norway
$125K
Russell Investments Group
115
Russell Investments Group
United Kingdom
$123K +$120K +6,546 +1,641%
Federated Hermes
116
Federated Hermes
Pennsylvania
$120K -$44.8K -2,441 -26%
Carson Wealth (CWM LLC)
117
Carson Wealth (CWM LLC)
Nebraska
$61K +$39.9K +2,175 +170%
AIP
118
Ameritas Investment Partners
Nebraska
$51.6K -$16.3K -888 -23%
SCM
119
Sterling Capital Management
North Carolina
$42.6K +$27K +1,470 +155%
QL
120
Quarry LP
New York
$31.3K +$2.55K +139 +9%
SOADOR
121
State of Alaska Department of Revenue
Alaska
$28K +$29.9K +1,630 New
Rockefeller Capital Management
122
Rockefeller Capital Management
New York
$27K +$28K +1,527 New
TRCT
123
Tower Research Capital (TRC)
New York
$26.9K -$119K -6,500 -81%
RMC
124
Resources Management Corp
Connecticut
$26K
AB
125
Amalgamated Bank
New York
$24K

NBBK Hedge Fund Activity: Q3 2025 in Review

145 of the 7,620 institutional investors tracked by Wall St. Rank reported a position in NB Bancorp (NBBK) for Q3 2025, worth a combined $339M — up 1.3% from $334M a quarter earlier.

Buyers outnumbered sellers: 28 funds opened new NBBK positions and 13 closed out — a net gain of 15 holders — while 44 added to existing stakes and 45 trimmed.

The largest buyer was UBS Group, adding an estimated $5.04M. The largest seller was Deutsche Bank, cutting an estimated $2.9M.

  • 145 institutional investors held NB Bancorp (NBBK) as of Q3 2025, up from 130 in Q2 2025.
  • Funds reported $339M of NB Bancorp stock for Q3 2025, up 1.3% quarter-over-quarter.
  • 28 funds opened new NB Bancorp positions in Q3 2025 and 13 closed out, a net change of +15 holders.
  • The largest NB Bancorp buyer in Q3 2025 was UBS Group, an estimated $5.04M added.
  • The largest NB Bancorp seller in Q3 2025 was Deutsche Bank, an estimated $2.9M sold.

Based on aggregated 13F filings for Q3 2025.