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 2026
Institutional positions in NB Bancorp, Inc. as of Jun 30, 2026. 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
- 161
- −13 vs. Q1 2026
- Shares held
- 22.5M
- −594.8K (−2.6%) vs. Q1 2026
- Total value
- $474.9M
- −$11.0M (−2.3%) vs. Q1 2026
- New holders
- 13
- 68 more added
- Sold out
- 26
- 49 more reduced
3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 2026
Shares, value and share of portfolio for each institution holding NB Bancorp, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Clearstead Advisors, LLC | 1 | $22 | 0.00% | +1 | New |
| True Wealth Design, LLC | 2 | $43 | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 6 | $127 | 0.00% | −6−50.0% | Reduced |
| Parallel Advisors, LLC | 15 | $317 | 0.00% | −24−61.5% | Reduced |
| UMA Financial Services, Inc. | 17 | $360 | 0.00% | +17 | New |
| Quarry LP | 23 | $486 | 0.00% | −10−30.3% | Reduced |
| US Bancorp | 50 | $1.06K | 0.00% | −3−5.7% | Reduced |
| American Capital Advisory, LLC | 50 | $1.06K | 0.00% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 56 | $1.19K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 57 | $1.20K | 0.00% | 00.0% | Unchanged |
| Minot DeBlois Advisors LLC | 85 | $1.80K | 0.00% | +85 | New |
| Silver Grove Financial Group, Inc. | 85 | $1.80K | 0.00% | +85 | New |
| Rothschild Investment LLC | 109 | $2.30K | 0.00% | −59−35.1% | Reduced |
| Picton Mahoney Asset Management | 114 | $2.41K | 0.00% | +114 | New |
| Allworth Financial LP | 118 | $2.49K | 0.00% | −5,848−98.0% | Reduced |
| Essential Partners LLC | 143 | $3.02K | 0.00% | −353−71.2% | Reduced |
| Optiver Holding B.V. | 168 | $3.55K | 0.00% | −4−2.3% | Reduced |
| IFP Advisors, Inc | 185 | $3.91K | 0.00% | +13+7.6% | Added |
| STRS Ohio | 200 | $4.23K | 0.00% | 00.0% | Unchanged |
| Eastern Bank | 288 | $6.08K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 424 | $8.96K | 0.00% | +377+802.1% | Added |
| GAMMA Investing LLC | 444 | $9.38K | 0.00% | −109−19.7% | Reduced |
| Covestor Ltd | 517 | $11.0K | 0.01% | +483+1,420.6% | Added |
| Stone House Investment Management, LLC | 818 | $17.3K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 820 | $17.3K | 0.00% | −12,512−93.8% | Reduced |
| Nisa Investment Advisors, LLC | 1,084 | $22.9K | 0.00% | +1,066+5,922.2% | Added |
| SRS Capital Advisors, Inc. | 1,272 | $26.9K | 0.00% | +1,219+2,300.0% | Added |
| Advisor Group Holdings, Inc. | 1,303 | $27.5K | 0.00% | −8−0.6% | Reduced |
| EverSource Wealth Advisors, LLC | 1,348 | $28.5K | 0.00% | +33+2.5% | Added |
| Rockefeller Capital Management L.P. | 1,527 | $32.3K | 0.00% | 00.0% | Unchanged |
| Aquatic Capital Management LLC | 1,529 | $32.3K | 0.00% | −56−3.5% | Reduced |
| State of Alaska, Department of Revenue | 1,630 | $34.0K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 1,751 | $37.0K | 0.00% | +874+99.7% | Added |
| Tower Research Capital LLC (TRC) | 2,738 | $57.9K | 0.00% | +657+31.6% | Added |
| Ameritas Investment Partners, Inc. | 3,422 | $72.3K | 0.00% | 00.0% | Unchanged |
| SHP Wealth Management | 3,459 | $73.1K | 0.01% | +3+0.1% | Added |
| Larson Financial Group LLC | 3,803 | $80.4K | 0.00% | −138−3.5% | Reduced |
| Pension & Wealth Management Advisors, Inc. | 6,155 | $130.1K | 0.04% | +14+0.2% | Added |
| KLP Kapitalforvaltning AS | 8,300 | $175.4K | 0.00% | 00.0% | Unchanged |
| Vanguard Investments Australia, Ltd. | 8,947 | $189.1K | 0.00% | 00.0% | Unchanged |
| Susquehanna Portfolio Strategies, LLC | 9,797 | $207.0K | 0.00% | −15,573−61.4% | Reduced |
| Pallas Capital Advisors LLC | 9,973 | $210.7K | 0.01% | +18+0.2% | Added |
| Barrett & Company, Inc. | 10,000 | $211.3K | 0.06% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 10,365 | $219.0K | 0.00% | 00.0% | Unchanged |
| CI Private Wealth, LLC | 10,441 | $220.6K | 0.00% | +10,441 | New |
| Sequoia Financial Advisors, LLC | 10,580 | $223.6K | 0.00% | +10,580 | New |
| Great Oak Capital Partners, LLC | 10,636 | $223.6K | 0.05% | 00.0% | Unchanged |
| Gray Private Wealth, LLC | 10,588 | $223.7K | 0.10% | 00.0% | Unchanged |
| Arizona State Retirement System | 10,593 | $223.8K | 0.00% | −93−0.9% | Reduced |
| Manufacturers Life Insurance Company, The | 11,222 | $237.1K | 0.00% | +314+2.9% | Added |
| Farther Finance Advisors, LLC | 12,005 | $253.7K | 0.00% | −13−0.1% | Reduced |
| Royal Bank of Canada | 12,407 | $262.0K | 0.00% | −861−6.5% | Reduced |
| Afg Fiduciary Services Limited Partnership | 12,493 | $264.1K | 0.21% | +800+6.8% | Added |
| Police & Firemen's Retirement System of New Jersey | 12,624 | $266.7K | 0.00% | +2,133+20.3% | Added |
| IMC-Chicago, LLC | 13,027 | $275.3K | 0.00% | +13,027 | New |
| Fifth Third Bancorp | 13,474 | $284.7K | 0.00% | +1,303+10.7% | Added |
| SG Americas Securities, LLC | 13,672 | $289.0K | 0.00% | +3,648+36.4% | Added |
| Jupiter Topco LLC | 14,800 | $312.8K | 0.00% | +14,800 | New |
| Flywheel Private Wealth LLC | 15,000 | $316.9K | 0.16% | 00.0% | Unchanged |
| Summit Wealth Group, LLC | 15,340 | $324.1K | 0.07% | 00.0% | Unchanged |
| ExodusPoint Capital Management, LP | 15,487 | $327.2K | 0.00% | +1,050+7.3% | Added |
| Cerity Partners LLC | 15,558 | $328.7K | 0.00% | −1,830−10.5% | Reduced |
| Rockland Trust Co | 15,969 | $337.4K | 0.01% | 00.0% | Unchanged |
| Kestra Private Wealth Services, LLC | 16,766 | $354.3K | 0.00% | −965−5.4% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 16,976 | $358.7K | 0.00% | 00.0% | Unchanged |
| Mercer Global Advisors Inc | 16,992 | $359.0K | 0.00% | +5,289+45.2% | Added |
| Harbor Advisors LLC | 17,500 | $369.8K | 0.05% | +7,500+75.0% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 18,740 | $396.0K | 0.00% | +47+0.3% | Added |
| Commonwealth Equity Services, LLC | 19,285 | $407.5K | 0.00% | −3,207−14.3% | Reduced |
| JPMorgan Chase & Co | 19,283 | $408.6K | 0.00% | −16,805−46.6% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 19,730 | $416.9K | 0.00% | 00.0% | Unchanged |
| Investment Advisory Group, LLC | 20,000 | $422.6K | 0.09% | 00.0% | Unchanged |
| Mirabella Financial Services LLP | 20,227 | $427.4K | 0.04% | +20,227 | New |
| Russell Investments Group, Ltd. | 21,332 | $450.7K | 0.00% | +16,988+391.1% | Added |
| Vanguard Asset Management, Ltd | 23,484 | $496.2K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 23,951 | $506.1K | 0.00% | +852+3.7% | Added |
| MetLife Investment Management | 24,072 | $508.6K | 0.00% | +1,266+5.6% | Added |
| Vanguard Global Advisers, LLC | 24,444 | $516.5K | 0.00% | +930+4.0% | Added |
| Northeast Investment Management | 25,000 | $528.3K | 0.02% | 00.0% | Unchanged |
| Rafferty Asset Management, LLC | 25,529 | $539.4K | 0.00% | −4,469−14.9% | Reduced |
| LPL Financial LLC | 26,409 | $558.0K | 0.00% | +49+0.2% | Added |
| Franklin Resources Inc | 28,370 | $599.5K | 0.00% | +1,100+4.0% | Added |
| Raymond James Financial Inc | 29,914 | $632.1K | 0.00% | +19,967+200.7% | Added |
| Allspring Global Investments Holdings, LLC | 30,429 | $657.9K | 0.00% | +955+3.2% | Added |
| Raffles Associates LP | 31,874 | $673.5K | 0.57% | +17,000+114.3% | Added |
| Bleakley Financial Group, LLC | 34,272 | $724.2K | 0.01% | +20,709+152.7% | Added |
| Wells Fargo & Company | 35,185 | $743.5K | 0.00% | +19,028+117.8% | Added |
| Arrowstreet Capital, Limited Partnership | 35,981 | $760.3K | 0.00% | −4,295−10.7% | Reduced |
| State of Wisconsin Investment Board | 38,169 | $806.5K | 0.00% | +13,783+56.5% | Added |
| Aviance Capital Partners, LLC | 38,173 | $806.6K | 0.08% | +1,006+2.7% | Added |
| UBS Asset Management Americas Inc | 38,359 | $810.5K | 0.00% | −1,003−2.5% | Reduced |
| California State Teachers Retirement System | 39,017 | $824.4K | 0.00% | +3,220+9.0% | Added |
| EJF Capital LLC | 40,751 | $861.1K | 0.58% | −706−1.7% | Reduced |
| Deutsche Bank AG | 41,024 | $866.8K | 0.00% | +9,918+31.9% | Added |
| XTX Topco Ltd | 41,912 | $885.6K | 0.01% | +2,130+5.4% | Added |
| Mariner, LLC | 42,471 | $897.4K | 0.00% | −7,024−14.2% | Reduced |
| Wedge Capital Management L L P | 43,216 | $913.2K | 0.02% | +860+2.0% | Added |
| Quantinno Capital Management LP | 44,137 | $932.6K | 0.00% | +18,196+70.1% | Added |
| Federated Hermes, Inc. | 44,967 | $950.2K | 0.00% | +11,068+32.6% | Added |
| Price T Rowe Associates Inc | 46,016 | $973.0K | 0.00% | +4,944+12.0% | Added |