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 2025
Institutional positions in NB Bancorp, Inc. as of Jun 30, 2025. 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
- 132
- +11 vs. Q1 2025
- Shares held
- 18.7M
- +373.9K (+2.0%) vs. Q1 2025
- Total value
- $334.4M
- +$3.09M (+0.9%) vs. Q1 2025
- New holders
- 22
- 44 more added
- Sold out
- 11
- 45 more reduced
1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: 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.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 161 | $474.9M |
| Q1 2026 | 177 | $486.3M |
| Q4 2025 | 164 | $441.3M |
| Q3 2025 | 146 | $338.8M |
| Q2 2025 | 132 | $334.4M |
| Q1 2025 | 122 | $331.3M |
| Q4 2024 | 114 | $326.7M |
| Q3 2024 | 108 | $355.7M |
| Q2 2024 | 92 | $253.2M |
| Q1 2024 | 56 | $131.0M |
| Q4 2023 | 17 | $34.7M |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding NB Bancorp, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Larson Financial Group LLC | 1 | $18 | 0.00% | −11−91.7% | Reduced |
| Allworth Financial LP | 8 | $143 | 0.00% | −23−74.2% | Reduced |
| Nisa Investment Advisors, LLC | 14 | $250 | 0.00% | −12−46.2% | Reduced |
| Essential Partners LLC | 21 | $375 | 0.00% | +21 | New |
| IFP Advisors, Inc | 0 | $555 | 0.00% | 0 | Unchanged |
| Parallel Advisors, LLC | 46 | $822 | 0.00% | −50−52.1% | Reduced |
| American Capital Advisory, LLC | 50 | $893 | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 55 | $982 | 0.00% | −50−47.6% | Reduced |
| Covestor Ltd | 126 | $2.00K | 0.00% | +103+447.8% | Added |
| Traub Capital Management LLC | 250 | $4.46K | 0.00% | +250 | New |
| Eastern Bank | 288 | $5.14K | 0.00% | −117−28.9% | Reduced |
| GAMMA Investing LLC | 371 | $6.63K | 0.00% | +95+34.4% | Added |
| Russell Investments Group, Ltd. | 399 | $7.13K | 0.00% | +311+353.4% | Added |
| Simplex Trading, LLC | 601 | $10.0K | 0.00% | +601 | New |
| EverSource Wealth Advisors, LLC | 731 | $13.1K | 0.00% | +731 | New |
| Sterling Capital Management LLC | 946 | $16.9K | 0.00% | +274+40.8% | Added |
| Advisor Group Holdings, Inc. | 1,034 | $18.5K | 0.00% | +66+6.8% | Added |
| CWM, LLC | 1,282 | $23.0K | 0.00% | +939+273.8% | Added |
| Amalgamated Bank | 1,347 | $24.0K | 0.00% | 00.0% | Unchanged |
| Resources Management Corp | 1,500 | $27.0K | 0.00% | 00.0% | Unchanged |
| Quarry LP | 1,634 | $29.2K | 0.01% | +182+12.5% | Added |
| Pension & Wealth Management Advisors, Inc. | 2,135 | $38.1K | 0.01% | +2,135 | New |
| Point72 (DIFC) Ltd | 2,303 | $41.1K | 0.00% | +2,303 | New |
| Point72 Asia (Singapore) Pte. Ltd. | 2,324 | $41.5K | 0.01% | +2,324 | New |
| Ameritas Investment Partners, Inc. | 3,814 | $68.1K | 0.00% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 6,076 | $108.5K | 0.00% | −600−9.0% | Reduced |
| KLP Kapitalforvaltning AS | 7,100 | $126.8K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 8,022 | $143.3K | 0.00% | +6,602+464.9% | Added |
| Point72 Asset Management, L.P. | 9,000 | $160.7K | 0.00% | +9,000 | New |
| Federated Hermes, Inc. | 9,224 | $164.7K | 0.00% | −487−5.0% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 9,257 | $165.3K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 10,000 | $178.6K | 0.00% | 00.0% | Unchanged |
| Barrett & Company, Inc. | 10,000 | $178.6K | 0.07% | 00.0% | Unchanged |
| Barry Investment Advisors, LLC | 10,000 | $178.6K | 0.04% | 00.0% | Unchanged |
| Gray Private Wealth, LLC | 10,588 | $189.1K | 0.10% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 10,788 | $192.7K | 0.00% | +10,788 | New |
| Arizona State Retirement System | 11,601 | $207.2K | 0.00% | −36−0.3% | Reduced |
| Voya Investment Management LLC | 11,769 | $210.2K | 0.00% | +168+1.4% | Added |
| Flagship Harbor Advisors, LLC | 11,914 | $212.8K | 0.01% | +11,914 | New |
| Farther Finance Advisors, LLC | 12,000 | $214.3K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 12,498 | $223.2K | 0.00% | −974−7.2% | Reduced |
| PDT Partners, LLC | 12,803 | $228.7K | 0.01% | −24,483−65.7% | Reduced |
| Martingale Asset Management L P | 13,400 | $239.3K | 0.01% | −2,100−13.5% | Reduced |
| Commonwealth Equity Services, LLC | 13,924 | $249.0K | 0.00% | +127+0.9% | Added |
| SG Americas Securities, LLC | 14,525 | $259.0K | 0.00% | −7,346−33.6% | Reduced |
| Janus Henderson Group PLC | 14,800 | $264.6K | 0.00% | −17,836−54.7% | Reduced |
| Intech Investment Management LLC | 15,980 | $285.4K | 0.00% | −3,689−18.8% | Reduced |
| Northeast Investment Management | 16,000 | $285.8K | 0.01% | +4,000+33.3% | Added |
| State of Wyoming | 16,365 | $292.3K | 0.04% | +4,583+38.9% | Added |
| Susquehanna Fundamental Investments, LLC | 16,957 | $302.9K | 0.01% | −29,489−63.5% | Reduced |
| Price T Rowe Associates Inc | 17,653 | $316.0K | 0.00% | +561+3.3% | Added |
| D. E. Shaw & Co., Inc. | 18,116 | $323.6K | 0.00% | +1,595+9.7% | Added |
| Royal Bank of Canada | 18,158 | $324.0K | 0.00% | +3,232+21.7% | Added |
| Citadel Advisors LLC | 18,895 | $337.5K | 0.00% | +18,895 | New |
| SEI Investments Co | 19,103 | $341.2K | 0.00% | 00.0% | Unchanged |
| Creative Planning | 19,108 | $341.3K | 0.00% | −9,982−34.3% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 19,185 | $342.6K | 0.00% | −3,942−17.0% | Reduced |
| Kestra Private Wealth Services, LLC | 19,627 | $350.5K | 0.01% | 00.0% | Unchanged |
| Wiley Bros.-Aintree Capital, LLC | 19,810 | $353.8K | 0.00% | +19,810 | New |
| Investment Advisory Group, LLC | 20,000 | $357.2K | 0.11% | 00.0% | Unchanged |
| LPL Financial LLC | 21,516 | $384.3K | 0.00% | −984−4.4% | Reduced |
| Modera Wealth Management, LLC | 22,011 | $393.1K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 22,474 | $401.4K | 0.00% | −895−3.8% | Reduced |
| MetLife Investment Management | 23,755 | $424.3K | 0.00% | 00.0% | Unchanged |
| Occudo Quantitative Strategies LP | 23,845 | $425.9K | 0.05% | +23,845 | New |
| Susquehanna Portfolio Strategies, LLC | 24,173 | $431.7K | 0.01% | +24,173 | New |
| First Trust Advisors LP | 26,304 | $469.8K | 0.00% | +498+1.9% | Added |
| Jane Street Group, LLC | 26,684 | $476.6K | 0.00% | −27,929−51.1% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 28,795 | $514.3K | 0.01% | +28,795 | New |
| Raffles Associates LP | 31,136 | $556.1K | 0.58% | +20,000+179.6% | Added |
| California State Teachers Retirement System | 35,234 | $629.3K | 0.00% | −691−1.9% | Reduced |
| Rafferty Asset Management, LLC | 35,629 | $636.3K | 0.00% | +2,720+8.3% | Added |
| BNP Paribas Arbitrage, SA | 36,539 | $652.6K | 0.00% | −13,646−27.2% | Reduced |
| Aviance Capital Partners, LLC | 37,167 | $663.8K | 0.09% | +1,434+4.0% | Added |
| Citigroup Inc | 37,301 | $666.2K | 0.00% | −8,691−18.9% | Reduced |
| Los Angeles Capital Management LLC | 38,457 | $686.8K | 0.00% | +38,457 | New |
| Principal Financial Group Inc | 40,267 | $719.2K | 0.00% | +40,267 | New |
| Alliancebernstein L.P. | 40,730 | $727.4K | 0.00% | −122,520−75.1% | Reduced |
| Invesco Ltd. | 42,744 | $763.4K | 0.00% | +13,112+44.2% | Added |
| AQR Capital Management LLC | 47,296 | $844.7K | 0.00% | +33,298+237.9% | Added |
| Jacobs Levy Equity Management, Inc | 49,559 | $885.1K | 0.00% | +49,559 | New |
| Integrated Wealth Concepts LLC | 49,740 | $888.4K | 0.01% | −2,630−5.0% | Reduced |
| SummerHaven Investment Management, LLC | 50,826 | $907.8K | 0.59% | +849+1.7% | Added |
| Trexquant Investment LP | 51,781 | $924.8K | 0.01% | +51,781 | New |
| XTX Topco Ltd | 52,620 | $939.8K | 0.04% | +52,620 | New |
| Farley Capital L.P. | 54,586 | $974.9K | 0.76% | 00.0% | Unchanged |
| Lynch & Associates | 56,851 | $1.02M | 0.20% | −3,375−5.6% | Reduced |
| Rhumbline Advisers | 60,519 | $1.08M | 0.00% | +9,714+19.1% | Added |
| American Century Companies Inc | 61,935 | $1.11M | 0.00% | +36,238+141.0% | Added |
| Legal & General Group Plc | 62,014 | $1.11M | 0.00% | +2,237+3.7% | Added |
| Susquehanna International Group, LLP | 62,493 | $1.12M | 0.00% | −9,044−12.6% | Reduced |
| Great Oak Capital Partners, LLC | 61,654 | $1.17M | 0.34% | −124,032−66.8% | Reduced |
| Cubist Systematic Strategies, LLC | 73,914 | $1.32M | 0.01% | +73,914 | New |
| Swiss National Bank | 75,900 | $1.36M | 0.00% | −2,700−3.4% | Reduced |
| Stilwell Value LLC | 80,000 | $1.43M | 0.70% | 00.0% | Unchanged |
| Barclays PLC | 81,902 | $1.46M | 0.00% | +22,570+38.0% | Added |
| Oppenheimer & Close, LLC | 82,999 | $1.48M | 1.14% | 00.0% | Unchanged |
| Colony Group, LLC | 85,353 | $1.52M | 0.00% | +330.0% | Added |
| International Assets Investment Management, LLC | 86,900 | $1.55M | 0.13% | +32,300+59.2% | Added |
| Ameriprise Financial Inc | 88,900 | $1.59M | 0.00% | +9,600+12.1% | Added |