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NB Bancorp, Inc.

NBBK
Exchange
Nasdaq
Industry
Savings Institutions, Not Federally Chartered
SEC CIK
0001979330

In the last 90 days, NB Bancorp, Inc. insiders filed 2 open-market purchases and 1 sale; 161 institutions reported holding it in 13F filings for Q2 2026, worth $474.9M in total; no superinvestor holds it.

13F holders, Q2 2024

Institutional positions in NB Bancorp, Inc. as of Jun 30, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
92
+36 vs. Q1 2024
Shares held
16.8M
+7.18M (+74.9%) vs. Q1 2024
Total value
$253.2M
+$122.2M (+93.3%) vs. Q1 2024
New holders
42
22 more added
Sold out
6
13 more reduced

Compare with Q1 2024: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting NBBK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2024: 92 institutions
Q1 2021: 0 institutionsQ2 2021: 0 institutionsQ3 2021: 0 institutionsQ4 2021: 0 institutionsQ1 2022: 0 institutionsQ2 2022: 0 institutionsQ3 2022: 0 institutionsQ4 2022: 0 institutionsQ1 2023: 0 institutionsQ2 2023: 0 institutionsQ3 2023: 0 institutionsQ4 2023: 17 institutionsQ1 2024: 56 institutionsQ2 2024: 92 institutionsQ3 2024: 108 institutionsQ4 2024: 114 institutionsQ1 2025: 122 institutionsQ2 2025: 132 institutionsQ3 2025: 146 institutionsQ4 2025: 164 institutionsQ1 2026: 177 institutionsQ2 2026: 161 institutions
Value heldQ2 2024: $253.2M
Q1 2021: $0Q2 2021: $0Q3 2021: $0Q4 2021: $0Q1 2022: $0Q2 2022: $0Q3 2022: $0Q4 2022: $0Q1 2023: $0Q2 2023: $0Q3 2023: $0Q4 2023: $34.7MQ1 2024: $131.0MQ2 2024: $253.2MQ3 2024: $355.7MQ4 2024: $326.7MQ1 2025: $331.3MQ2 2025: $334.4MQ3 2025: $338.8MQ4 2025: $441.3MQ1 2026: $486.3MQ2 2026: $474.9M
Institutions holding NBBK and their total value by quarter
QuarterHoldersValue
Q2 2026161$474.9M
Q1 2026177$486.3M
Q4 2025164$441.3M
Q3 2025146$338.8M
Q2 2025132$334.4M
Q1 2025122$331.3M
Q4 2024114$326.7M
Q3 2024108$355.7M
Q2 202492$253.2M
Q1 202456$131.0M
Q4 202317$34.7M
Q3 20230$0
Q2 20230$0
Q1 20230$0
Q4 20220$0
Q3 20220$0
Q2 20220$0
Q1 20220$0
Q4 20210$0
Q3 20210$0
Q2 20210$0
Q1 20210$0

Institutions, Q2 2024

Shares, value and share of portfolio for each institution holding NB Bancorp, Inc.; share changes are against Q1 2024.

Institutions holding NBBK in Q2 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Price T Rowe Associates Inc12,406$00.00%+12,406New
Rothschild Investment LLC10$1510.00%+10New
Simplex Trading, LLC832$12.0K0.00%+832New
Advisor Group Holdings, Inc.968$14.6K0.00%+968New
Steward Partners Investment Advisory, LLC1,000$15.1K0.00%00.0%Unchanged
Amalgamated Bank1,347$20.0K0.00%+1,347New
FMR LLC1,327$20.0K0.00%+1,327New
Rakuten Investment Management, Inc.1,719$25.4K0.00%+1,719New
nVerses Capital, LLC1,700$25.6K0.02%+1,700New
Fairfield Financial Advisors, LTD2,000$30.2K0.01%+2,000New
State of Wyoming2,197$33.1K0.01%+2,197New
Qube Research & Technologies Ltd2,788$42.0K0.00%−38,830−93.3%Reduced
California State Teachers Retirement System2,821$42.5K0.00%+2,821New
Legal & General Group Plc3,361$50.7K0.00%+3,361New
Ameritas Investment Partners, Inc.3,814$57.5K0.00%+3,814New
Tower Research Capital LLC (TRC)4,870$73.4K0.00%+4,501+1,219.8%Added
Acadian Asset Management LLC6,329$95.0K0.00%+6,329New
International Assets Investment Management, LLC6,900$104.1K0.01%+6,900New
Quantbot Technologies LP7,033$106.1K0.01%+7,033New
STRS Ohio7,200$108.6K0.00%+7,200New
Barrett & Company, Inc.10,000$150.8K0.07%00.0%Unchanged
Janney Montgomery Scott LLC10,000$151.0K0.00%−10,000−50.0%Reduced
MetLife Investment Management10,022$151.1K0.00%+10,022New
Gray Private Wealth, LLC10,588$159.7K0.10%00.0%Unchanged
Janus Henderson Group PLC11,898$179.4K0.00%−10,972−48.0%Reduced
Farther Finance Advisors, LLC12,000$181.6K0.01%00.0%Unchanged
Two Sigma Securities, LLC12,585$189.8K0.01%+12,585New
Voya Investment Management LLC13,507$203.7K0.00%+13,507New
Jane Street Group, LLC13,649$205.8K0.00%+3,474+34.1%Added
Commonwealth Equity Services, LLC13,801$208.0K0.00%00.0%Unchanged
Manufacturers Life Insurance Company, The13,989$211.0K0.00%+13,989New
Royal Bank of Canada14,074$212.0K0.00%+3,924+38.7%Added
New York State Common Retirement Fund15,800$238.3K0.00%+15,800New
Wells Fargo & Company17,107$258.0K0.00%+16,813+5,718.7%Added
PDT Partners, LLC17,273$260.5K0.02%+17,273New
SG Americas Securities, LLC17,702$267.0K0.00%+17,702New
Bank of Montreal18,238$275.8K0.00%+18,238New
Trexquant Investment LP18,715$282.2K0.00%+18,715New
Kestra Private Wealth Services, LLC19,627$296.0K0.01%00.0%Unchanged
LPL Financial LLC20,000$301.6K0.00%00.0%Unchanged
Barry Investment Advisors, LLC20,000$301.6K0.10%00.0%Unchanged
Corebridge Financial, Inc.20,946$316.1K0.00%+20,946New
Modera Wealth Management, LLC22,011$331.9K0.00%00.0%Unchanged
Jump Financial, LLC27,110$408.8K0.01%+27,110New
Occudo Quantitative Strategies LP28,643$431.9K0.08%+28,643New
Invesco Ltd.32,759$494.0K0.00%+32,759New
Susquehanna International Group, LLP34,367$518.3K0.00%+20,657+150.7%Added
Alpine Global Management, LLC38,296$577.5K0.10%+38,296New
ExodusPoint Capital Management, LP42,000$633.0K0.01%+42,000New
BNP Paribas Arbitrage, SA42,842$646.1K0.00%+36,606+587.0%Added
Barclays PLC46,879$706.9K0.00%+46,879New
Millennium Management LLC47,222$712.1K0.00%−242,619−83.7%Reduced
Cannell Capital LLC50,591$762.9K0.18%00.0%Unchanged
Twin Focus Capital Partners, LLC51,164$771.6K0.12%+51,164New
Rhumbline Advisers54,169$816.9K0.00%+54,169New
Two Sigma Investments, LP55,533$837.4K0.00%+55,533New
Citigroup Inc56,912$858.2K0.00%−110,877−66.1%Reduced
Lynch & Associates68,398$1.03M0.23%−1,653−2.4%Reduced
Renaissance Technologies LLC70,700$1.07M0.00%+55,200+356.1%Added
Nuveen Asset Management, LLC73,694$1.11M0.00%+73,694New
Integrated Wealth Concepts LLC74,071$1.12M0.02%−2,000−2.6%Reduced
UBS Group AG77,744$1.17M0.00%+50,246+182.7%Added
Stilwell Value LLC80,000$1.21M0.63%00.0%Unchanged
Farley Capital L.P.80,000$1.21M1.08%00.0%Unchanged
Rafferty Asset Management, LLC82,365$1.24M0.00%+82,365New
Oppenheimer & Close, LLC82,999$1.25M1.10%00.0%Unchanged
Northern Trust Corp89,813$1.35M0.00%+17,415+24.1%Added
Colony Group, LLC82,000$1.36M0.00%00.0%Unchanged
JPMorgan Chase & Co91,030$1.37M0.00%+12,011+15.2%Added
Panagora Asset Management Inc105,034$1.58M0.01%+105,034New
Mangrove Partners115,270$1.74M0.16%00.0%Unchanged
Victory Capital Management Inc117,403$1.77M0.00%−460.0%Reduced
Bank of New York Mellon Corp120,688$1.82M0.00%+120,688New
Hennessy Advisors Inc155,000$2.34M0.09%−35,000−18.4%Reduced
Deutsche Bank AG166,696$2.51M0.00%+166,696New
Endeavour Capital Advisors Inc181,769$2.74M0.95%+44,780+32.7%Added
Bank of America Corp198,883$3.00M0.00%+170,767+607.4%Added
Great Oak Capital Partners, LLC189,686$3.24M1.22%−229,555−54.8%Reduced
Raffles Associates LP223,019$3.36M3.79%+112,319+101.5%Added
Morgan Stanley229,881$3.47M0.00%+151,922+194.9%Added
Prospector Partners LLC242,272$3.65M0.43%+242,272New
EJF Capital LLC269,996$4.07M3.02%−120,621−30.9%Reduced
Charles Schwab Investment Management Inc311,687$4.70M0.00%+95,394+44.1%Added
Stieven Capital Advisors, L.P.363,631$5.48M1.21%−5,100−1.4%Reduced
Goldman Sachs Group Inc500,481$7.55M0.00%+262,691+110.5%Added
Alliancebernstein L.P.652,025$9.83M0.00%−165,140−20.2%Reduced
State Street Corp853,420$12.9M0.00%+723,620+557.5%Added
Geode Capital Management, LLC868,973$13.1M0.00%+482,796+125.0%Added
Wellington Management Group LLP1,202,783$18.1M0.00%+1,005,486+509.6%Added
Vanguard Group Inc2,247,742$33.9M0.00%+266,919+13.5%Added
Pertento Partners LLP2,355,743$35.5M4.50%+1,019,184+76.3%Added
BlackRock Inc.3,111,388$46.9M0.00%+2,371,120+320.3%Added
Marshall Wace, LLP0$00.00%−94,377−100.0%Sold out
Freestone Capital Holdings, LLC0$00.00%−26,134−100.0%Sold out
Schonfeld Strategic Advisors LLC0$00.00%−16,244−100.0%Sold out
Polymer Capital Management (HK) LTD0$00.00%−12,386−100.0%Sold out
CTC Alternative Strategies, Ltd.0$00.00%−10,700−100.0%Sold out
Macquarie Group Ltd0$00.00%−2,612−100.0%Sold out