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, Q1 2025
Institutional positions in NB Bancorp, Inc. as of Mar 31, 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
- 122
- +10 vs. Q4 2024
- Shares held
- 18.3M
- +345.6K (+1.9%) vs. Q4 2024
- Total value
- $331.3M
- +$6.44M (+2.0%) vs. Q4 2024
- New holders
- 21
- 36 more added
- Sold out
- 11
- 38 more reduced
2 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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.
| 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, Q1 2025
Shares, value and share of portfolio for each institution holding NB Bancorp, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,140,847 | $56.8M | 0.00% | −134,092−4.1% | Reduced |
| Vanguard Group Inc | 2,108,757 | $38.1M | 0.00% | +21,932+1.1% | Added |
| Pertento Partners LLP | 1,978,903 | $35.8M | 4.27% | 00.0% | Unchanged |
| Wellington Management Group LLP | 1,610,589 | $29.1M | 0.01% | +116,988+7.8% | Added |
| State Street Corp | 1,080,102 | $19.5M | 0.00% | +56,183+5.5% | Added |
| Geode Capital Management, LLC | 901,664 | $16.3M | 0.00% | +20,965+2.4% | Added |
| Hotchkis & Wiley Capital Management LLC | 526,810 | $9.52M | 0.03% | −16,590−3.1% | Reduced |
| Goldman Sachs Group Inc | 471,423 | $8.52M | 0.00% | −42,426−8.3% | Reduced |
| Northern Trust Corp | 347,816 | $6.29M | 0.00% | −10,723−3.0% | Reduced |
| Charles Schwab Investment Management Inc | 311,436 | $5.63M | 0.00% | −8,000−2.5% | Reduced |
| Bank of America Corp | 303,720 | $5.49M | 0.00% | −8,979−2.9% | Reduced |
| FMR LLC | 294,578 | $5.32M | 0.00% | +44,348+17.7% | Added |
| Millennium Management LLC | 253,543 | $4.58M | 0.00% | +29,373+13.1% | Added |
| Morgan Stanley | 251,644 | $4.55M | 0.00% | −92,589−26.9% | Reduced |
| Prospector Partners LLC | 242,272 | $4.38M | 0.50% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 212,405 | $3.84M | 0.00% | −35,077−14.2% | Reduced |
| Renaissance Technologies LLC | 202,200 | $3.65M | 0.01% | +36,700+22.2% | Added |
| Hennessy Advisors Inc | 195,000 | $3.52M | 0.12% | −10,000−4.9% | Reduced |
| Panagora Asset Management Inc | 181,282 | $3.28M | 0.02% | +36,099+24.9% | Added |
| Deutsche Bank AG | 180,815 | $3.27M | 0.00% | −3,594−1.9% | Reduced |
| Great Oak Capital Partners, LLC | 185,686 | $3.15M | 1.05% | 00.0% | Unchanged |
| Endeavour Capital Advisors Inc | 164,179 | $2.97M | 1.10% | +6,754+4.3% | Added |
| Alliancebernstein L.P. | 163,250 | $2.95M | 0.00% | −19,000−10.4% | Reduced |
| Two Sigma Investments, LP | 150,397 | $2.72M | 0.01% | +38,292+34.2% | Added |
| Nuveen, LLC | 132,258 | $2.39M | 0.00% | +132,258 | New |
| Marshall Wace, LLP | 118,623 | $2.14M | 0.00% | +118,623 | New |
| Victory Capital Management Inc | 116,199 | $2.10M | 0.00% | −1,920−1.6% | Reduced |
| Mangrove Partners | 103,743 | $1.87M | 0.21% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 101,627 | $1.84M | 0.00% | −20.0% | Reduced |
| Colony Group, LLC | 85,320 | $1.54M | 0.00% | −3,680−4.1% | Reduced |
| Oppenheimer & Close, LLC | 82,999 | $1.50M | 1.24% | 00.0% | Unchanged |
| Stilwell Value LLC | 80,000 | $1.45M | 0.74% | 00.0% | Unchanged |
| Qube Research & Technologies Ltd | 79,600 | $1.44M | 0.00% | +79,600 | New |
| Ameriprise Financial Inc | 79,300 | $1.43M | 0.00% | −200−0.3% | Reduced |
| Swiss National Bank | 78,600 | $1.42M | 0.00% | +3,600+4.8% | Added |
| Two Sigma Advisers, LP | 75,900 | $1.37M | 0.00% | +38,500+102.9% | Added |
| Susquehanna International Group, LLP | 71,537 | $1.29M | 0.00% | +33,615+88.6% | Added |
| EJF Capital LLC | 69,963 | $1.26M | 0.80% | +25,341+56.8% | Added |
| UBS Asset Management Americas Inc | 63,138 | $1.14M | 0.00% | +15,667+33.0% | Added |
| Lynch & Associates | 60,226 | $1.09M | 0.24% | −8,172−11.9% | Reduced |
| Legal & General Group Plc | 59,777 | $1.08M | 0.00% | +4,677+8.5% | Added |
| Barclays PLC | 59,332 | $1.07M | 0.00% | −18,112−23.4% | Reduced |
| UBS Group AG | 57,894 | $1.05M | 0.00% | −21,762−27.3% | Reduced |
| Jane Street Group, LLC | 54,613 | $986.9K | 0.00% | +54,613 | New |
| International Assets Investment Management, LLC | 54,600 | $986.6K | 0.09% | +54,600 | New |
| Farley Capital L.P. | 54,586 | $986.4K | 0.91% | 00.0% | Unchanged |
| Integrated Wealth Concepts LLC | 52,370 | $946.3K | 0.01% | −12,034−18.7% | Reduced |
| Rhumbline Advisers | 50,805 | $918.0K | 0.00% | −26,872−34.6% | Reduced |
| BNP Paribas Arbitrage, SA | 50,185 | $906.8K | 0.00% | −22,635−31.1% | Reduced |
| SummerHaven Investment Management, LLC | 49,977 | $903.1K | 0.63% | +751+1.5% | Added |
| Susquehanna Fundamental Investments, LLC | 46,446 | $839.3K | 0.01% | +46,446 | New |
| Citigroup Inc | 45,992 | $831.1K | 0.00% | −2,892−5.9% | Reduced |
| Piper Sandler & Co. | 40,000 | $715.8K | 0.54% | +40,000 | New |
| PDT Partners, LLC | 37,286 | $673.8K | 0.05% | +16,403+78.5% | Added |
| California State Teachers Retirement System | 35,925 | $649.2K | 0.00% | 00.0% | Unchanged |
| Aviance Capital Partners, LLC | 35,733 | $645.7K | 0.09% | +35,733 | New |
| Janus Henderson Group PLC | 32,636 | $613.4K | 0.00% | +7,765+31.2% | Added |
| Rafferty Asset Management, LLC | 32,909 | $594.7K | 0.00% | +3,863+13.3% | Added |
| Invesco Ltd. | 29,632 | $535.5K | 0.00% | +10,151+52.1% | Added |
| Creative Planning | 29,090 | $525.7K | 0.00% | +4,912+20.3% | Added |
| First Trust Advisors LP | 25,806 | $466.3K | 0.00% | −260−1.0% | Reduced |
| American Century Companies Inc | 25,697 | $464.3K | 0.00% | +1,903+8.0% | Added |
| MetLife Investment Management | 23,755 | $429.3K | 0.00% | −496−2.0% | Reduced |
| Wells Fargo & Company | 23,369 | $422.3K | 0.00% | +517+2.3% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 23,127 | $417.9K | 0.00% | +975+4.4% | Added |
| LPL Financial LLC | 22,500 | $406.6K | 0.00% | +2,500+12.5% | Added |
| Modera Wealth Management, LLC | 22,011 | $397.7K | 0.01% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 21,871 | $395.0K | 0.00% | −3,731−14.6% | Reduced |
| Investment Advisory Group, LLC | 20,000 | $361.4K | 0.12% | +20,000 | New |
| Intech Investment Management LLC | 19,669 | $355.4K | 0.00% | +5,936+43.2% | Added |
| Kestra Private Wealth Services, LLC | 19,627 | $354.7K | 0.01% | 00.0% | Unchanged |
| SEI Investments Co | 19,103 | $345.2K | 0.00% | 00.0% | Unchanged |
| Corebridge Financial, Inc. | 19,074 | $344.7K | 0.00% | −283−1.5% | Reduced |
| Engineers Gate Manager LP | 18,960 | $342.6K | 0.01% | −4,829−20.3% | Reduced |
| Price T Rowe Associates Inc | 17,092 | $309.0K | 0.00% | +2,060+13.7% | Added |
| D. E. Shaw & Co., Inc. | 16,521 | $298.5K | 0.00% | +4,788+40.8% | Added |
| Martingale Asset Management L P | 15,500 | $280.1K | 0.01% | +15,500 | New |
| Royal Bank of Canada | 14,926 | $270.0K | 0.00% | −1,220−7.6% | Reduced |
| AQR Capital Management LLC | 13,998 | $252.9K | 0.00% | +13,998 | New |
| Commonwealth Equity Services, LLC | 13,797 | $249.0K | 0.00% | −5,000−26.6% | Reduced |
| Manufacturers Life Insurance Company, The | 13,472 | $243.4K | 0.00% | +1,199+9.8% | Added |
| Northeast Investment Management | 12,000 | $216.8K | 0.01% | +12,000 | New |
| Farther Finance Advisors, LLC | 12,000 | $215.6K | 0.01% | 00.0% | Unchanged |
| State of Wyoming | 11,782 | $212.9K | 0.03% | +3,421+40.9% | Added |
| Arizona State Retirement System | 11,637 | $210.3K | 0.00% | +492+4.4% | Added |
| Voya Investment Management LLC | 11,601 | $209.6K | 0.00% | −1,241−9.7% | Reduced |
| Centiva Capital, LP | 11,514 | $208.1K | 0.01% | +11,514 | New |
| Raffles Associates LP | 11,136 | $201.2K | 0.25% | 00.0% | Unchanged |
| Gray Private Wealth, LLC | 10,588 | $191.3K | 0.12% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 10,000 | $180.7K | 0.00% | 00.0% | Unchanged |
| Barrett & Company, Inc. | 10,000 | $180.7K | 0.08% | 00.0% | Unchanged |
| Barry Investment Advisors, LLC | 10,000 | $180.7K | 0.05% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 9,711 | $175.5K | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 9,257 | $167.3K | 0.00% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 7,100 | $128.3K | 0.00% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 6,676 | $120.6K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 3,814 | $68.9K | 0.00% | 00.0% | Unchanged |
| Resources Management Corp | 1,500 | $27.0K | 0.00% | 00.0% | Unchanged |
| Quarry LP | 1,452 | $26.2K | 0.01% | +1,452 | New |
| Tower Research Capital LLC (TRC) | 1,420 | $25.7K | 0.00% | −3,013−68.0% | Reduced |