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NB Bancorp (NBBK) Institutional Ownership

NB Bancorp logo
$22.12 -0.15 (-0.67%)
Closing price 04:00 PM Eastern
Extended Trading
$22.14 +0.02 (+0.09%)
As of 07:30 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for NB Bancorp (NASDAQ:NBBK)

Number of
Institutional Buyers
(last 12 months)
106
Total
Institutional Inflows
(last 12 months)
$203.46M
Number of
Institutional Sellers
(last 12 months)
44
Total
Institutional Outflows
(last 12 months)
$36.38M
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NBBK Institutional Buying and Selling by Quarter

NB Bancorp Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/22/2026State Street Corp1,471,766$31.10M0.0%+13.8%3.359%
9/9/2026Sequoia Financial Advisors LLC10,580$224K0.0%N/A0.024%
8/27/2026Corient Private Wealth LP10,441$221K0.0%N/A0.024%
8/20/2026Hennessy Advisors Inc.178,000$3.76M0.1%-1.1%0.406%
8/19/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC38,359$811K0.0%-2.5%0.088%
8/18/2026Empowered Funds LLC181,399$3.83M0.0%+7.7%0.414%
8/17/2026Raffles Associates LP31,874$673K0.5%+114.3%0.073%
8/17/2026Raffles Associates LP31,874$673K0.5%N/A0.073%
8/17/2026Bank of America Corp DE48,905$1.03M0.0%-58.8%0.112%
8/15/2026Jupiter Topco LLC14,800$313K0.0%N/A0.034%
8/14/2026Raffles Associates LP31,874$673K0.6%N/A0.073%
8/14/2026Legal & General Group Plc56,718$1.20M0.0%N/A0.129%
8/14/2026The Manufacturers Life Insurance Company11,222$237K0.0%N/A0.026%
8/10/2026Tieton Capital Management LLC546,600$11.55M3.3%N/A1.223%
8/7/2026BlackRock Inc.3,331,544$70.40M0.0%N/A7.451%
8/7/2026Pallas Capital Advisors LLC9,973$211K0.0%N/A0.022%
8/7/2026Deutsche Bank AG41,024$867K0.0%N/A0.092%
8/6/2026Bank of New York Mellon Corp171,541$3.63M0.0%N/A0.384%
7/10/2026Wedge Capital Management L L P NC43,216$913K0.0%+2.0%0.097%
7/9/2026AFG Fiduciary Services Limited Partnership12,493$264K0.2%+6.8%0.028%
5/19/2026Bank of America Corp DE118,801$2.50M0.0%+31.1%0.266%
5/18/2026Royal Bank of Canada13,268$280K0.0%+7.0%0.030%
5/18/2026Empowered Funds LLC168,394$3.55M0.0%+10.0%0.377%
5/16/2026The Manufacturers Life Insurance Company10,908$230K0.0%-11.7%0.024%
5/16/2026Quantinno Capital Management LP25,941$547K0.0%+11.2%0.058%
5/16/2026Lazard Asset Management LLC57,302$1.21M0.0%+9.9%0.128%
5/14/2026Renaissance Technologies LLC263,906$5.56M0.0%+5.0%0.590%
5/14/2026Arrowstreet Capital Limited Partnership40,276$849K0.0%+113.5%0.090%
5/14/2026Sei Investments Co.302,181$6.37M0.0%+110.2%0.676%
5/14/2026Globeflex Capital L P6,791$143K0.0%N/A0.015%
5/13/2026First Trust Advisors LP140,264$2.96M0.0%-1.3%0.314%
5/7/2026Dimensional Fund Advisors LP522,384$11.01M0.0%+81.4%1.156%
5/6/2026Allspring Global Investments Holdings LLC29,474$626K0.0%N/A0.065%
5/5/2026Bank of New York Mellon Corp148,066$3.12M0.0%-0.8%0.328%
5/4/2026Principal Financial Group Inc.55,364$1.17M0.0%-14.1%0.123%
5/2/2026International Assets Investment Management LLC131,013$2.78M0.1%+50.8%0.290%
5/1/2026Fifth Third Bancorp12,171$256K0.0%N/A0.027%
4/22/2026Sterling Capital Management LLC13,332$281K0.0%+479.7%0.030%
4/21/2026Northeast Investment Management25,000$527K0.0%+8.7%0.055%
4/20/2026Kestra Private Wealth Services LLC17,731$374K0.0%-10.0%0.039%
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4/20/2026OP Asset Management Ltd58,392$1.23M0.0%N/A0.129%
4/17/2026Flywheel Private Wealth LLC15,000$316K0.2%N/A0.033%
4/16/2026SG Americas Securities LLC10,024$211K0.0%-23.4%0.022%
4/16/2026Diversified Trust Co13,194$278K0.0%+7.4%0.029%
3/4/2026SHP Wealth Management3,454$68K0.0%N/A0.009%
2/19/2026Invesco Ltd.63,337$1.26M0.0%+19.8%0.159%
2/18/2026Mercer Global Advisors Inc. ADV16,698$331K0.0%N/A0.042%
2/18/2026Empowered Funds LLC153,150$3.04M0.0%+91.9%0.385%
2/18/2026Wellington Management Group LLP1,471,189$29.16M0.0%-19.5%3.694%
2/18/2026Susquehanna Portfolio Strategies LLC25,370$503K0.0%-7.1%0.064%
2/18/2026Susquehanna Fundamental Investments LLC29,022$575K0.0%+71.2%0.073%
2/18/2026Occudo Quantitative Strategies LP32,155$637K0.0%+73.2%0.081%
2/18/2026Millennium Management LLC54,866$1.09M0.0%-89.9%0.138%
2/18/2026Bridgeway Capital Management LLC193,150$3.83M0.1%+68.2%0.485%
2/17/2026Schonfeld Strategic Advisors LLC14,651$290K0.0%N/A0.037%
2/17/2026AQR Capital Management LLC105,011$2.08M0.0%+28.7%0.264%
2/17/2026Pertento Partners LLP2,343,776$46.45M4.4%+10.9%5.884%
2/17/2026Price T Rowe Associates Inc. MD39,493$783K0.0%+112.8%0.099%
2/17/2026Raffles Associates LP28,374$562K0.4%-8.9%0.071%
2/17/2026California State Teachers Retirement System36,093$715K0.0%+23.8%0.091%
2/17/2026Russell Investments Group Ltd.4,344$86K0.0%-37.5%0.011%
2/17/2026State of Wisconsin Investment Board26,641$528K0.0%N/A0.067%
2/17/2026ExodusPoint Capital Management LP20,963$415K0.0%-22.2%0.053%
2/17/2026Royal Bank of Canada12,400$246K0.0%-7.0%0.031%
2/17/2026Mangrove Partners IM LLC111,356$2.21M0.2%-2.4%0.280%
2/16/2026Verition Fund Management LLC38,264$758K0.0%+9.7%0.096%
2/16/2026Panagora Asset Management Inc.150,391$2.98M0.0%-12.9%0.378%
2/16/2026Mariner LLC36,366$721K0.0%+194.2%0.091%
2/16/2026Focus Partners Wealth91,366$1.81M0.0%+7.0%0.229%
2/16/2026Barclays PLC70,772$1.40M0.0%+33.8%0.178%
2/13/2026Kestra Advisory Services LLC2,325$46K0.0%N/A0.006%
2/13/2026Marshall Wace LLP251,512$4.99M0.0%-9.2%0.631%
2/13/2026The Manufacturers Life Insurance Company 12,354$245K0.0%+6.1%0.031%
2/13/2026Rafferty Asset Management LLC24,196$480K0.0%-54.1%0.061%
2/13/2026First Trust Advisors LP142,087$2.82M0.0%+13.2%0.357%
2/13/2026Integrated Wealth Concepts LLC47,596$943K0.0%+1.0%0.119%
2/13/2026Charles Schwab Investment Management Inc.329,398$6.53M0.0%+14.6%0.827%
2/13/2026Police & Firemen s Retirement System of New Jersey10,491$208K0.0%+13.3%0.026%
2/13/2026State Street Corp1,114,379$22.09M0.0%-6.9%2.798%
2/13/2026Martingale Asset Management L P11,700$232K0.0%-12.7%0.029%
2/13/2026Wells Fargo & Company MN45,419$900K0.0%+69.1%0.114%
2/12/2026Davis R M Inc.15,930$316K0.0%N/A0.040%
2/12/2026HRT Financial LP15,064$298K0.0%N/A0.038%
2/12/2026MetLife Investment Management LLC23,122$458K0.0%-2.7%0.058%
2/12/2026Financial Engines Advisors L.L.C.117,707$2.33M0.0%-9.0%0.296%
2/12/2026Commonwealth Equity Services LLC21,496$426K0.0%N/A0.054%
2/12/2026Renaissance Technologies LLC251,274$4.98M0.0%+126.6%0.631%
2/12/2026Dimensional Fund Advisors LP288,028$5.71M0.0%N/A0.723%
2/12/2026Integrated Quantitative Investments LLC40,944$812K0.2%+181.6%0.103%
2/12/2026Federated Hermes Inc.34,237$679K0.0%+404.7%0.086%
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2/12/2026New York State Common Retirement Fund144,385$2.86M0.0%+1,343.9%0.363%
2/12/2026Swiss National Bank77,100$1.53M0.0%+21.4%0.194%
2/12/2026Nuveen LLC346,779$6.87M0.0%+218.9%0.871%
2/11/2026Empowered Funds LLC153,150$3.04M0.0%+91.9%0.385%
2/11/2026Deutsche Bank AG25,025$496K0.0%+24.0%0.063%
2/11/2026LPL Financial LLC24,328$482K0.0%+35.2%0.061%
2/11/2026Brandywine Global Investment Management LLC27,470$544K0.0%N/A0.069%
2/11/2026AltraVue Capital LLC693,000$13.74M1.1%N/A1.740%
2/11/2026Los Angeles Capital Management LLC90,370$1.64M0.0%+93.6%0.227%
2/10/2026Goldman Sachs Group Inc.593,888$11.77M0.0%+13.1%1.491%


NBBK Institutional Ownership - Frequently Asked Questions

During the previous two years, 160 institutional investors and hedge funds held shares of NB Bancorp. The most heavily invested institutionals were BlackRock Inc. ($70.40M), Pertento Partners LLP ($46.45M), Vanguard Group Inc. ($45.61M), State Street Corp ($31.10M), Wellington Management Group LLP ($29.16M), Geode Capital Management LLC ($19.16M), and AltraVue Capital LLC ($13.74M).Learn more on NB Bancorp's institutional investors.

Of the 147 institutional investors that purchased NB Bancorp's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: BlackRock Inc. ($3.33M), Tieton Capital Management LLC ($1.07M), AltraVue Capital LLC ($693K), Dimensional Fund Advisors LP ($522.38K), Hotchkis & Wiley Capital Management LLC ($478.68K), Wellington Management Group LLP ($407.81K), and Vanguard Group Inc. ($372.83K).

Institutional investors have bought a total of 10,045,997 shares in the last 24 months. This purchase volume represents approximately $203.46M in transactions.

Of the 44 institutional investors that sold NB Bancorp's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Millennium Management LLC ($588.21K), Wellington Management Group LLP ($389.40K), UBS Group AG ($232.26K), Bank of America Corp DE ($134.43K), State Street Corp ($82.54K), Victory Capital Management Inc. ($60.44K), and UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC ($55.36K).

Institutional investors have sold a total of 1,883,309 shares in the last 24 months. This volume of shares sold represents approximately $36.38M in transactions.


Related Companies

Institutional ownership data for NASDAQ:NBBK is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/22/2026. New 13F filings are added each quarter as they're published.
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