NB BANCORP INC (NBBK) Institutional Ownership Changes & 13F Activity

NB BANCORP INC (NBBK). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include State Street Corp, Citadel Advisors Llc, Sei Investments Co, Goldman Sachs Group Inc, and Invesco Ltd..

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Op Asset Management LtdSell-58,392-100.0%0$0.00Q2 2026Sep 28, 2026
State Street CorpBuy+178,228+13.8%1,471,766$31.10MQ2 2026Sep 22, 2026
Manufacturers Life Insurance Company, TheBuy+314+2.9%11,222$237.12KQ2 2026Sep 09, 2026
Integrated Wealth Concepts LlcSell-236-0.5%47,691$1.01MQ2 2026Sep 09, 2026
Citadel Advisors LlcBuy+173,443+149.0%289,814$6.12MQ2 2026Sep 02, 2026
Corient Private Wealth LlcBuy+10,441—10,441$220.62KQ2 2026Aug 27, 2026
California State Teachers Retirement SystemBuy+3,220+9.0%39,017$824.43KQ2 2026Aug 24, 2026
Mercer Global Advisors IncBuy+5,289+45.2%16,992$359.05KQ2 2026Aug 19, 2026
Raffles Associates LpBuy+17,000+114.3%31,874$673.50KQ2 2026Aug 17, 2026
Empowered Funds, LlcBuy+13,005+7.7%181,399$3.83MQ2 2026Aug 17, 2026
Sei Investments CoSell-159,835-52.9%142,346$3.01MQ2 2026Aug 14, 2026
Goldman Sachs Group IncSell-119,714-17.3%571,954$12.09MQ2 2026Aug 14, 2026
Invesco Ltd.Buy+97,941—97,941$2.07MQ2 2026Aug 14, 2026
Two Sigma Investments, LpSell-94,780-25.5%277,027$5.85MQ2 2026Aug 14, 2026
D. E. Shaw & Co., Inc.Buy+79,546+113.0%149,931$3.17MQ2 2026Aug 14, 2026
Millennium Management LlcSell-76,796-48.5%81,447$1.72MQ2 2026Aug 14, 2026
Bank Of America CorpSell-69,896-58.8%48,905$1.03MQ2 2026Aug 14, 2026
Hotchkis & Wiley Capital Management LlcBuy+50,400+11.2%501,172$10.59MQ2 2026Aug 14, 2026
Qube Research & Technologies LtdSell-47,830-27.3%127,236$2.69MQ2 2026Aug 14, 2026
Ameriprise Financial IncBuy+46,899—46,899$990.98KQ2 2026Aug 14, 2026
Trexquant Investment LpBuy+46,312—46,312$978.57KQ2 2026Aug 14, 2026
Raymond James Financial IncBuy+19,967+200.7%29,914$632.08KQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+19,028+117.8%35,185$743.46KQ2 2026Aug 14, 2026
Susquehanna Portfolio Strategies, LlcSell-15,573-61.4%9,797$207.01KQ2 2026Aug 14, 2026
State Of Wisconsin Investment BoardBuy+13,783+56.5%38,169$806.51KQ2 2026Aug 14, 2026
Bridgeway Capital Management, LlcBuy+13,005+6.2%221,399$4.68MQ2 2026Aug 14, 2026
Aqr Capital Management LlcSell-12,472-9.7%116,349$2.46MQ2 2026Aug 14, 2026
Price T Rowe Associates IncBuy+4,944+12.0%46,016$973.00KQ2 2026Aug 14, 2026
Rafferty Asset Management, LlcSell-4,469-14.9%25,529$539.43KQ2 2026Aug 14, 2026
Legal & General Group PlcBuy+3,710+7.0%56,718$1.20MQ2 2026Aug 14, 2026
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Frequently asked questions about NBBK activity

  • Which institutional owners are buying NBBK?

    Institutional owners buying NBBK include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in NBBK activity?

    "Buy" means an investor increased their reported position in NBBK compared to the prior reporting period. This reflects growing exposure to NB BANCORP INC (NBBK) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in NBBK increasing?

    Institutional interest in NBBK can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.