NB BancorpNBBK
13F holders, Q3 2025 (September 30)146holders +15
27new positions
13sold out
7famous investors
$17.65avg. 13F price*
At the end of Q3 2025, 146 institutions reported holding NB Bancorp Inc. (NBBK) in their 13F filings, up 15 from Q2 2025. 27 opened new positions and 13 sold out. The largest holders were BlackRock, Inc. ($49.8M), Pertento Partners LLP ($37.3M) and Vanguard Group Inc. ($34.4M). 7 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio).
- Company
- NB Bancorp Inc.
- CUSIP
- 63945M107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 27 | $9.6M |
| Exits | 13 | $4.8M |
All 13F filers, Q2 2025 → Q3 2025: 1,692,807 shares bought and 1,218,584 shares sold, net +474,223 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 146 holders
| BlackRock, Inc. | 0.00% | Reduce -2.1% | 2,822,125 | $49.8M |
| Pertento Partners LLP | 4.55% | No change | 2,114,336 | $37.3M |
| Vanguard Group Inc. | 0.00% | Reduce -1.6% | 1,950,135 | $34.4M |
| Wellington Management Group LLP | 0.01% | Reduce -1.8% | 1,826,939 | $32.2M |
| State Street Corp. | 0.00% | Add +6.8% | 1,196,922 | $21.1M |
| Geode Capital Management, LLC | 0.00% | Reduce -0.7% | 876,648 | $15.5M |
| Hotchkis & Wiley Capital Management LLC | 0.04% | Add +27.2% | 694,982 | $12.3M |
| Millennium Management | 0.01% | Reduce -15.5% | 543,282 | $9.6M |
| Goldman Sachs Group Inc. | 0.00% | Add +10.6% | 524,898 | $9.3M |
| UBS Group AG | 0.00% | Add +264.4% | 378,353 | $6.7M |
| FMR LLC | 0.00% | Add +7.8% | 324,680 | $5.7M |
| Northern Trust Corp. | 0.00% | Reduce -2.2% | 309,699 | $5.5M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -3.9% | 287,455 | $5.1M |
| Marshall Wace, LLP | 0.01% | Reduce -12.2% | 277,100 | $4.9M |
| Two Sigma Investments, LP | 0.01% | Add +45.8% | 205,869 | $3.6M |
| Hennessy Advisors Inc. | 0.11% | Add +2.8% | 185,000 | $3.3M |
| EJF Capital LP | 1.77% | Add +3.0% | 172,803 | $3.0M |
| Panagora Asset Management Inc. | 0.01% | Reduce -23.5% | 172,662 | $3.0M |
| Prospector Partners LLC | 0.32% | Reduce -10.0% | 150,862 | $2.7M |
| American Century Companies Inc. | 0.00% | Add +121.7% | 137,313 | $2.4M |
| Two Sigma Advisers, LP | 0.00% | Add +49.5% | 134,100 | $2.4M |
| Financial Engines Advisors L.L.C. | 0.00% | Add +9.3% | 129,288 | $2.3M |
| First Trust Advisors LP | 0.00% | Add +377.0% | 125,469 | $2.2M |
| Morgan Stanley | 0.00% | Reduce -9.1% | 122,069 | $2.2M |
| JPMorgan Chase & Co. | 0.00% | Add +19.6% | 119,682 | $2.1M |
| Bridgeway Capital Management, LLC | 0.04% | New | 114,812 | $2.0M |
| Mangrove Partners Im, LLC | 0.17% | Add +10.0% | 114,117 | $2.0M |
| Renaissance Technologies | 0.00% | Reduce -23.1% | 110,900 | $2.0M |
| Nuveen, LLC | 0.00% | No change | 108,744 | $1.9M |
| Bank of New York Mellon Corp | 0.00% | Reduce -4.5% | 98,830 | $1.7M |
| International Assets Investment Management, LLC | 0.13% | No change | 86,900 | $1.6M |
| Qube Research & Technologies Ltd | 0.00% | Reduce -13.7% | 86,875 | $1.5M |
| Cubist Systematic Strategies, LLC | 0.02% | Add +15.7% | 85,522 | $1.5M |
| Focus Partners Wealth | 0.00% | Add +0.1% | 85,412 | $1.5M |
| Oppenheimer & Close, LLC | 0.99% | No change | 82,999 | $1.5M |
| AQR Capital Management | 0.00% | Add +72.5% | 81,569 | $1.4M |
| Stilwell Value LLC | 1.02% | No change | 80,000 | $1.4M |
| Empowered Funds, LLC | 0.01% | New | 79,812 | $1.4M |
| Ameriprise Financial Inc. | 0.00% | Reduce -11.8% | 78,400 | $1.4M |
| Trexquant Investment LP | 0.01% | Add +42.4% | 73,724 | $1.3M |
| Bank of America Corp. | 0.00% | Reduce -49.7% | 65,420 | $1.2M |
| Swiss National Bank | 0.00% | Reduce -16.3% | 63,500 | $1.1M |
| Legal & General Group Plc | 0.00% | No change | 62,014 | $1.1M |
| Citadel Advisors | 0.00% | Add +214.0% | 59,327 | $1.0M |
| Lynch & Associates | 0.19% | Reduce -0.9% | 56,334 | $994K |
| Jane Street Group, LLC | 0.00% | Add +103.1% | 54,191 | $956K |
| Rhumbline Advisers | 0.00% | Reduce -12.1% | 53,177 | $939K |
| Barclays PLC | 0.00% | Reduce -35.4% | 52,878 | $933K |
| Invesco Ltd. | 0.00% | Add +23.7% | 52,876 | $933K |
| Rafferty Asset Management, LLC | 0.00% | Add +47.8% | 52,668 | $930K |
| Lazard Asset Management LLC | 0.00% | New | 51,770 | $914K |
| Victory Capital Management Inc. | 0.00% | Reduce -53.9% | 51,670 | $912K |
| Integrated Wealth Concepts LLC | 0.01% | Reduce -5.3% | 47,114 | $832K |
| Los Angeles Capital Management LLC | 0.00% | Add +21.4% | 46,680 | $824K |
| Principal Financial Group Inc. | 0.00% | Add +9.5% | 44,090 | $778K |
| D. E. Shaw & Co. | 0.00% | Add +135.3% | 42,624 | $752K |
| Jacobs Levy Equity Management, Inc. | 0.00% | Reduce -15.7% | 41,766 | $737K |
| Alliancebernstein L.P. | 0.00% | No change | 40,730 | $719K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -58.2% | 39,025 | $689K |
| Aviance Capital Partners, LLC | 0.08% | No change | 37,167 | $656K |
| Citigroup Inc. | 0.00% | Reduce -4.6% | 35,591 | $628K |
| Round Rock Advisors LLC | 0.10% | New | 33,970 | $621K |
| Verition Fund Management LLC | 0.00% | New | 34,867 | $615K |
| Raffles Associates LP | 0.51% | No change | 31,136 | $550K |
| Great Oak Capital Partners, LLC | 0.14% | Reduce -49.9% | 30,921 | $544K |
| California State Teachers Retirement System | 0.00% | Reduce -17.2% | 29,164 | $515K |
| Creative Planning | 0.00% | Add +50.0% | 28,670 | $506K |
| Susquehanna Portfolio Strategies, LLC | 0.01% | Add +13.0% | 27,312 | $482K |
| Balyasny Asset Management L.P. | 0.00% | New | 27,241 | $481K |
| ExodusPoint Capital Management, LP | 0.01% | New | 26,930 | $475K |
| Wells Fargo & Company | 0.00% | Add +19.5% | 26,853 | $474K |
| BNP Paribas Financial Markets | 0.00% | Reduce -27.6% | 26,447 | $467K |
| Squarepoint Ops LLC | 0.00% | New | 25,255 | $446K |
| MetLife Investment Management, LLC | 0.00% | No change | 23,755 | $419K |
| Sei Investments Co. | 0.00% | Add +23.0% | 23,503 | $415K |
| Modera Wealth Management, LLC | 0.00% | No change | 22,011 | $388K |
| Deutsche Bank AG | 0.00% | Reduce -88.7% | 20,182 | $356K |
| Investment Advisory Group, LLC | 0.10% | No change | 20,000 | $353K |
| &partners | 0.00% | Add +0.1% | 19,820 | $350K |
| Polymer Capital Management (US) LLC | 0.05% | New | 19,819 | $350K |
| Kestra Private Wealth Services, LLC | 0.00% | Add +0.2% | 19,664 | $347K |
| T. Rowe Price Associates Inc. | 0.00% | Add +5.1% | 18,560 | $328K |
| Occudo Quantitative Strategies LP | 0.04% | Reduce -22.2% | 18,561 | $328K |
| Susquehanna International Group, LLP | 0.00% | Reduce -70.3% | 18,537 | $327K |
| LPL Financial LLC | 0.00% | Reduce -16.4% | 17,992 | $318K |
| Susquehanna Fundamental Investments, LLC | 0.01% | Reduce -0.0% | 16,951 | $299K |
| AlphaQuest LLC | 0.02% | New | 16,882 | $298K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | New | 16,681 | $294K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -15.2% | 16,271 | $287K |
| Northeast Investment Management | 0.01% | No change | 16,000 | $282K |
| Janus Henderson Group PLC | 0.00% | No change | 14,800 | $261K |
| Integrated Quantitative Investments LLC | 0.07% | New | 14,542 | $257K |
| SG Americas Securities, LLC | 0.00% | Reduce -0.7% | 14,427 | $255K |
| Intech Investment Management LLC | 0.00% | Reduce -10.5% | 14,304 | $252K |
| Martingale Asset Management L P | 0.01% | No change | 13,400 | $237K |
| Royal Bank of Canada | 0.00% | Reduce -26.6% | 13,329 | $236K |
| Tudor Investment Corporation | 0.00% | New | 13,169 | $232K |
| Mariner, LLC | 0.00% | New | 12,363 | $218K |
| Point72 Asset Management | 0.00% | Add +36.9% | 12,325 | $218K |
| Farther Finance Advisors, LLC | 0.00% | No change | 12,000 | $212K |
"% of holder's portfolio" is NBBK's weight in each manager's 13F, not the share of NB Bancorp Inc. the manager owns.