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, Q3 2025
Institutional positions in NB Bancorp, Inc. as of Sep 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
- 146
- +14 vs. Q2 2025
- Shares held
- 19.2M
- +474.2K (+2.5%) vs. Q2 2025
- Total value
- $338.8M
- +$4.44M (+1.3%) vs. Q2 2025
- New holders
- 27
- 45 more added
- Sold out
- 13
- 45 more reduced
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding NB Bancorp, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Allworth Financial LP | 9 | $159 | 0.00% | +1+12.5% | Added |
| Nisa Investment Advisors, LLC | 14 | $247 | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 20 | $353 | 0.00% | −26−56.5% | Reduced |
| Rothschild Investment LLC | 28 | $494 | 0.00% | −27−49.1% | Reduced |
| The PNC Financial Services Group, Inc. | 35 | $618 | 0.00% | +35 | New |
| American Capital Advisory, LLC | 50 | $883 | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 55 | $971 | 0.00% | +55 | Added |
| Covestor Ltd | 125 | $2.00K | 0.00% | −1−0.8% | Reduced |
| Optiver Holding B.V. | 212 | $3.74K | 0.00% | +212 | New |
| SBI Securities Co., Ltd. | 250 | $4.41K | 0.00% | +250 | New |
| Eastern Bank | 288 | $5.08K | 0.00% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 354 | $6.25K | 0.00% | +354 | New |
| GAMMA Investing LLC | 396 | $6.99K | 0.00% | +25+6.7% | Added |
| Essential Partners LLC | 405 | $7.15K | 0.00% | +384+1,828.6% | Added |
| Larson Financial Group LLC | 536 | $9.46K | 0.00% | +535+53,500.0% | Added |
| SRS Capital Advisors, Inc. | 683 | $12.1K | 0.00% | +683 | New |
| EverSource Wealth Advisors, LLC | 733 | $12.9K | 0.00% | +2+0.3% | Added |
| FSA Wealth Management LLC | 800 | $14.1K | 0.01% | +800 | New |
| Point72 (DIFC) Ltd | 892 | $15.7K | 0.00% | −1,411−61.3% | Reduced |
| Advisor Group Holdings, Inc. | 1,184 | $22.1K | 0.00% | +150+14.5% | Added |
| Amalgamated Bank | 1,347 | $24.0K | 0.00% | 00.0% | Unchanged |
| Resources Management Corp | 1,500 | $26.0K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 1,522 | $26.9K | 0.00% | −6,500−81.0% | Reduced |
| Rockefeller Capital Management L.P. | 1,527 | $27.0K | 0.00% | +1,527 | New |
| State of Alaska, Department of Revenue | 1,630 | $28.0K | 0.00% | +1,630 | New |
| Quarry LP | 1,773 | $31.3K | 0.01% | +139+8.5% | Added |
| Pension & Wealth Management Advisors, Inc. | 2,135 | $37.7K | 0.01% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 2,416 | $42.6K | 0.00% | +1,470+155.4% | Added |
| Ameritas Investment Partners, Inc. | 2,926 | $51.6K | 0.00% | −888−23.3% | Reduced |
| CWM, LLC | 3,457 | $61.0K | 0.00% | +2,175+169.7% | Added |
| Federated Hermes, Inc. | 6,783 | $119.7K | 0.00% | −2,441−26.5% | Reduced |
| Russell Investments Group, Ltd. | 6,945 | $122.6K | 0.00% | +6,546+1,640.6% | Added |
| KLP Kapitalforvaltning AS | 7,100 | $125.3K | 0.00% | 00.0% | Unchanged |
| Quantbot Technologies LP | 8,822 | $155.7K | 0.00% | +8,822 | New |
| Police & Firemen's Retirement System of New Jersey | 9,257 | $163.4K | 0.00% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 9,676 | $170.8K | 0.00% | +3,600+59.2% | Added |
| Afg Fiduciary Services Limited Partnership | 10,000 | $175.8K | 0.10% | +10,000 | New |
| New York State Common Retirement Fund | 10,000 | $176.5K | 0.00% | 00.0% | Unchanged |
| Barrett & Company, Inc. | 10,000 | $176.5K | 0.06% | 00.0% | Unchanged |
| Harbor Advisors LLC | 10,000 | $176.5K | 0.03% | +10,000 | New |
| Gray Private Wealth, LLC | 10,588 | $186.9K | 0.09% | 00.0% | Unchanged |
| PharVision Advisers, LLC | 10,721 | $189.2K | 0.11% | +10,721 | New |
| Public Employees Retirement System of Ohio | 10,788 | $190.4K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 11,646 | $205.6K | 0.00% | −852−6.8% | Reduced |
| Flagship Harbor Advisors, LLC | 11,914 | $210.3K | 0.01% | 00.0% | Unchanged |
| Aquatic Capital Management LLC | 11,955 | $211.0K | 0.00% | +11,955 | New |
| Farther Finance Advisors, LLC | 12,000 | $211.8K | 0.00% | 00.0% | Unchanged |
| Point72 Asset Management, L.P. | 12,325 | $217.5K | 0.00% | +3,325+36.9% | Added |
| Mariner, LLC | 12,363 | $218.2K | 0.00% | +12,363 | New |
| Tudor Investment Corp Et Al | 13,169 | $232.4K | 0.00% | +13,169 | New |
| Royal Bank of Canada | 13,329 | $236.0K | 0.00% | −4,829−26.6% | Reduced |
| Martingale Asset Management L P | 13,400 | $236.5K | 0.01% | 00.0% | Unchanged |
| Intech Investment Management LLC | 14,304 | $252.5K | 0.00% | −1,676−10.5% | Reduced |
| SG Americas Securities, LLC | 14,427 | $255.0K | 0.00% | −98−0.7% | Reduced |
| Integrated Quantitative Investments LLC | 14,542 | $256.7K | 0.07% | +14,542 | New |
| Janus Henderson Group PLC | 14,800 | $261.4K | 0.00% | 00.0% | Unchanged |
| Northeast Investment Management | 16,000 | $282.4K | 0.01% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 16,271 | $287.2K | 0.00% | −2,914−15.2% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 16,681 | $294.4K | 0.00% | +16,681 | New |
| Quest Partners LLC | 16,882 | $298.0K | 0.02% | +16,882 | New |
| Susquehanna Fundamental Investments, LLC | 16,951 | $299.2K | 0.01% | −60.0% | Reduced |
| LPL Financial LLC | 17,992 | $317.6K | 0.00% | −3,524−16.4% | Reduced |
| Susquehanna International Group, LLP | 18,537 | $327.2K | 0.00% | −43,956−70.3% | Reduced |
| Occudo Quantitative Strategies LP | 18,561 | $327.6K | 0.04% | −5,284−22.2% | Reduced |
| Price T Rowe Associates Inc | 18,560 | $328.0K | 0.00% | +907+5.1% | Added |
| Kestra Private Wealth Services, LLC | 19,664 | $347.1K | 0.00% | +37+0.2% | Added |
| Polymer Capital Management (US) LLC | 19,819 | $349.8K | 0.05% | +19,819 | New |
| Wiley Bros.-Aintree Capital, LLC | 19,820 | $349.8K | 0.00% | +10+0.1% | Added |
| Investment Advisory Group, LLC | 20,000 | $353.0K | 0.10% | 00.0% | Unchanged |
| Deutsche Bank AG | 20,182 | $356.2K | 0.00% | −157,872−88.7% | Reduced |
| Modera Wealth Management, LLC | 22,011 | $388.5K | 0.00% | 00.0% | Unchanged |
| SEI Investments Co | 23,503 | $414.8K | 0.00% | +4,400+23.0% | Added |
| MetLife Investment Management | 23,755 | $419.3K | 0.00% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 25,255 | $445.8K | 0.00% | +25,255 | New |
| BNP Paribas Arbitrage, SA | 26,447 | $466.8K | 0.00% | −10,092−27.6% | Reduced |
| Wells Fargo & Company | 26,853 | $474.0K | 0.00% | +4,379+19.5% | Added |
| ExodusPoint Capital Management, LP | 26,930 | $475.3K | 0.01% | +26,930 | New |
| Balyasny Asset Management LLC | 27,241 | $480.8K | 0.00% | +27,241 | New |
| Susquehanna Portfolio Strategies, LLC | 27,312 | $482.1K | 0.01% | +3,139+13.0% | Added |
| Creative Planning | 28,670 | $506.0K | 0.00% | +9,562+50.0% | Added |
| California State Teachers Retirement System | 29,164 | $514.7K | 0.00% | −6,070−17.2% | Reduced |
| Great Oak Capital Partners, LLC | 30,921 | $543.6K | 0.14% | −30,733−49.8% | Reduced |
| Raffles Associates LP | 31,136 | $549.5K | 0.51% | 00.0% | Unchanged |
| Verition Fund Management LLC | 34,867 | $615.4K | 0.00% | +34,867 | New |
| Round Rock Advisors, LLC | 33,970 | $620.6K | 0.10% | +33,970 | New |
| Citigroup Inc | 35,591 | $628.2K | 0.00% | −1,710−4.6% | Reduced |
| Aviance Capital Partners, LLC | 37,167 | $656.0K | 0.08% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 39,025 | $688.8K | 0.00% | −54,360−58.2% | Reduced |
| Alliancebernstein L.P. | 40,730 | $718.9K | 0.00% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 41,766 | $737.2K | 0.00% | −7,793−15.7% | Reduced |
| D. E. Shaw & Co., Inc. | 42,624 | $752.3K | 0.00% | +24,508+135.3% | Added |
| Principal Financial Group Inc | 44,090 | $778.2K | 0.00% | +3,823+9.5% | Added |
| Los Angeles Capital Management LLC | 46,680 | $823.9K | 0.00% | +8,223+21.4% | Added |
| Integrated Wealth Concepts LLC | 47,114 | $831.6K | 0.01% | −2,626−5.3% | Reduced |
| Victory Capital Management Inc | 51,670 | $912.0K | 0.00% | −60,439−53.9% | Reduced |
| Lazard Asset Management LLC | 51,770 | $913.7K | 0.00% | +51,770 | New |
| Rafferty Asset Management, LLC | 52,668 | $929.6K | 0.00% | +17,039+47.8% | Added |
| Invesco Ltd. | 52,876 | $933.3K | 0.00% | +10,132+23.7% | Added |
| Barclays PLC | 52,878 | $933.3K | 0.00% | −29,024−35.4% | Reduced |
| Rhumbline Advisers | 53,177 | $938.6K | 0.00% | −7,342−12.1% | Reduced |