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 |
|---|---|---|---|---|---|
| Endeavour Capital Advisors Inc | 164,179 | $2.97M | 1.10% | +6,754+4.3% | Added |
| Great Oak Capital Partners, LLC | 185,686 | $3.15M | 1.05% | 00.0% | Unchanged |
| Deutsche Bank AG | 180,815 | $3.27M | 0.00% | −3,594−1.9% | Reduced |
| Panagora Asset Management Inc | 181,282 | $3.28M | 0.02% | +36,099+24.9% | Added |
| Hennessy Advisors Inc | 195,000 | $3.52M | 0.12% | −10,000−4.9% | Reduced |
| Renaissance Technologies LLC | 202,200 | $3.65M | 0.01% | +36,700+22.2% | Added |
| JPMorgan Chase & Co | 212,405 | $3.84M | 0.00% | −35,077−14.2% | Reduced |
| Prospector Partners LLC | 242,272 | $4.38M | 0.50% | 00.0% | Unchanged |
| Morgan Stanley | 251,644 | $4.55M | 0.00% | −92,589−26.9% | Reduced |
| Millennium Management LLC | 253,543 | $4.58M | 0.00% | +29,373+13.1% | Added |
| FMR LLC | 294,578 | $5.32M | 0.00% | +44,348+17.7% | Added |
| Bank of America Corp | 303,720 | $5.49M | 0.00% | −8,979−2.9% | Reduced |
| Charles Schwab Investment Management Inc | 311,436 | $5.63M | 0.00% | −8,000−2.5% | Reduced |
| Northern Trust Corp | 347,816 | $6.29M | 0.00% | −10,723−3.0% | Reduced |
| Goldman Sachs Group Inc | 471,423 | $8.52M | 0.00% | −42,426−8.3% | Reduced |
| Hotchkis & Wiley Capital Management LLC | 526,810 | $9.52M | 0.03% | −16,590−3.1% | Reduced |
| Geode Capital Management, LLC | 901,664 | $16.3M | 0.00% | +20,965+2.4% | Added |
| State Street Corp | 1,080,102 | $19.5M | 0.00% | +56,183+5.5% | Added |
| Wellington Management Group LLP | 1,610,589 | $29.1M | 0.01% | +116,988+7.8% | Added |
| Pertento Partners LLP | 1,978,903 | $35.8M | 4.27% | 00.0% | Unchanged |
| Vanguard Group Inc | 2,108,757 | $38.1M | 0.00% | +21,932+1.1% | Added |
| BlackRock, Inc. | 3,140,847 | $56.8M | 0.00% | −134,092−4.1% | Reduced |
| Stieven Capital Advisors, L.P. | 0 | $0 | 0.00% | −197,043−100.0% | Sold out |
| Twin Focus Capital Partners, LLC | 0 | $0 | 0.00% | −51,164−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −28,836−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −25,480−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −23,580−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −14,400−100.0% | Sold out |
| ProShare Advisors LLC | 0 | $0 | 0.00% | −10,965−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −6,210−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −6,191−100.0% | Sold out |
| Fairfield Financial Advisors, LTD | 0 | $0 | 0.00% | −2,000−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −960−100.0% | Sold out |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |
| Cassady Schiller Wealth Management, LLC | – | – | – | – | Not filed |