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Disclosery

NBBK NB BANCORP INC

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COM (common), issuer CIK 1979330

142 managers (146 13F filers) reported a position in NBBK shares at 2025-09-30, 19,194,010 shares in all. 27 filers opened a position and 13 filers sold out during the quarter.

Managers
142
13F filers
146
New
27
Added
45
Reduced
45
Sold out
13
Shares held by filers
19,194,010

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.2,822,125$49.8M<0.01%-59,23213F-HRTimelineGroup
Pertento Partners LLPin group Pertento Partners LLP2,114,336$37.3M4.55%013F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC1,950,135$34.4M<0.01%-31,86113F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…1,826,939$32.2M0.01%-33,65013F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,196,922$21.1M<0.01%+76,25913F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC876,648$15.5M<0.01%-6,49313F-HRTimelineGroup
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC694,982$12.3M0.04%+148,47213F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC543,282$9.59M0.01%-99,78913F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC524,898$9.26M<0.01%+50,14213F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding417,378$7.37M+220,151Timeline
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding339,969$6M+109,035Timeline
FMR LLCin group FMR LLC324,680$5.73M<0.01%+23,40313F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP309,699$5.47M<0.01%-7,06213F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co287,455$5.07M<0.01%-11,53213F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP277,100$4.89M0.01%-38,36013F-HRTimelineGroup
HENNESSY ADVISORS INC185,000$3.27M0.11%+5,00013F-HRTimeline
EJF Capital LP172,803$3.05M1.77%+4,97313F-HRTimeline
PANAGORA ASSET MANAGEMENT INC172,662$3.05M0.01%-52,91913F-HRTimeline
PROSPECTOR PARTNERS LLCin group PROSPECTOR PARTNERS LLC150,862$2.66M0.32%-16,76013F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC137,313$2.42M<0.01%+75,37813F-HRTimelineGroup
Financial Engines Advisors L.L.C.129,288$2.28M<0.01%+10,98913F-HRTimeline
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP125,469$2.21M<0.01%+99,16513F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY122,069$2.15M<0.01%-12,26813F-HR/ATimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO119,682$2.11M<0.01%+19,61613F-HR/ATimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC114,812$2.03M0.04%new13F-HRTimeline
MANGROVE PARTNERS IM, LLC114,117$2.01M0.15%+10,37413F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC110,900$1.96M<0.01%-33,24813F-HRTimeline
Nuveen, LLCin group TIAA108,744$1.92M<0.01%013F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp98,830$1.74M<0.01%-4,70613F-HRTimelineGroup
INTERNATIONAL ASSETS INVESTMENT MANAGEM…86,900$1.59M0.13%013F-HRTimeline
Qube Research & Technologies Ltd86,875$1.53M<0.01%-13,79713F-HRTimeline
Cubist Systematic Strategies, LLC85,522$1.51M0.02%+11,60813F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth85,412$1.51M<0.01%+5913F-HRTimelineGroup
Oppenheimer & Close, LLC82,999$1.46M0.99%013F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC81,569$1.44M<0.01%+34,27313F-HRTimelineGroup
STILWELL VALUE LLCin group STILWELL VALUE LLC80,000$1.41M0.66%013F-HRTimelineGroup
Empowered Funds, LLC79,812$1.41M0.01%new13F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC78,400$1.38M<0.01%-10,50013F-HRTimelineGroup
Trexquant Investment LP73,724$1.3M0.01%+21,94313F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/65,420$1.15M<0.01%-64,53213F-HR/ATimelineGroup
Swiss National Bank63,500$1.12M<0.01%-12,40013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 3 filers holding62,800$1.11M-40,823Timeline
Legal & General Group Plcin group Legal & General Group Plc62,014$1.09M<0.01%013F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC59,327$1.05M<0.01%+40,43213F-HRTimelineGroup
LYNCH & ASSOCIATES/IN56,334$994K0.19%-51713F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC54,191$956K<0.01%+27,50713F-HRTimelineGroup
RHUMBLINE ADVISERS53,177$939K<0.01%-7,34213F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC52,878$933K<0.01%-29,02413F-HR/ATimelineGroup
Invesco Ltd.in group Invesco Ltd.52,876$933K<0.01%+10,13213F-HRTimelineGroup
Rafferty Asset Management, LLC52,668$930K<0.01%+17,03913F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC51,770$914K<0.01%new13F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC51,670$912K<0.01%-60,43913F-HRTimeline
Integrated Wealth Concepts LLC47,114$832K0.01%-2,62613F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC46,680$824K<0.01%+8,22313F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC44,090$778K<0.01%+3,82313F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.42,624$752K<0.01%+24,50813F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC41,766$737K<0.01%-7,79313F-HRTimeline
ALLIANCEBERNSTEIN L.P.40,730$719K<0.01%013F-HRTimeline
Aviance Capital Partners, LLC37,167$656K0.08%013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC35,591$628K<0.01%-1,71013F-HRTimelineGroup
Round Rock Advisors LLC33,970$621K0.1%new13F-HRTimeline
Verition Fund Management LLC34,867$615K<0.01%new13F-HRTimeline
RAFFLES ASSOCIATES LP31,136$550K0.51%013F-HRTimeline
GREAT OAK CAPITAL PARTNERS, LLC30,921$544K0.14%-30,73313F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…29,164$515K<0.01%-6,07013F-HRTimeline
Creative Planningin group Creative Planning28,670$506K<0.01%+9,56213F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management27,241$481K<0.01%new13F-HRTimelineGroup
ExodusPoint Capital Management, LP26,930$475K0.01%new13F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN26,853$474K<0.01%+4,37913F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS26,447$467K<0.01%-10,09213F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC25,255$446K<0.01%new13F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…23,755$419K<0.01%013F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO23,503$415K<0.01%+4,40013F-HRTimelineGroup
Modera Wealth Management, LLC22,011$388K<0.01%013F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\20,182$356K<0.01%-157,87213F-HRTimelineGroup
Investment Advisory Group, LLC20,000$353K0.1%013F-HRTimeline
&PARTNERS19,820$350K<0.01%+1013F-HRTimeline
Polymer Capital Management (US) LLC19,819$350K0.05%new13F-HRTimeline
KESTRA PRIVATE WEALTH SERVICES, LLCin group Kestra Advisory Services, LLC19,664$347K<0.01%+3713F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/18,560$328K<0.01%+90713F-HRTimeline
OCCUDO QUANTITATIVE STRATEGIES LP18,561$328K0.04%-5,28413F-HRTimeline
LPL Financial LLC17,992$318K<0.01%-3,52413F-HRTimeline
AlphaQuest LLC16,882$298K0.02%new13F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …16,681$294K<0.01%new13F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…16,271$287K<0.01%-2,91413F-HRTimelineGroup
NORTHEAST INVESTMENT MANAGEMENT16,000$282K0.01%013F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson14,800$261K<0.01%013F-HRTimelineGroup
Integrated Quantitative Investments LLC14,542$257K0.07%new13F-HRTimeline
SG Americas Securities, LLC14,427$255K<0.01%-9813F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC14,304$252K<0.01%-1,67613F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P13,400$237K0.01%013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA13,329$236K<0.01%-4,82913F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL13,169$232K<0.01%new13F-HR/ATimeline
Mariner, LLCin group Mariner, LLC12,363$218K<0.01%new13F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.12,325$218K<0.01%+3,32513F-HRTimelineGroup
Farther Finance Advisors, LLC12,000$212K<0.01%013F-HRTimeline
Aquatic Capital Management LLC11,955$211K<0.01%new13F-HRTimeline
FLAGSHIP HARBOR ADVISORS, LLC11,914$210K0.01%013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …11,646$206K<0.01%-85213F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…10,788$190K<0.01%013F-HRTimeline
PharVision Advisers, LLC10,721$189K0.11%new13F-HRTimeline
Gray Private Wealth, LLC10,588$187K0.09%013F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND10,000$176K<0.01%013F-HRTimeline
BARRETT & COMPANY, INC.10,000$176K0.06%013F-HRTimeline
Harbor Advisors LLC10,000$176K0.03%new13F-HRTimeline
AFG FIDUCIARY SERVICES LIMITED PARTNERS…10,000$176K0.1%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…9,676$171K<0.01%+3,60013F-HRTimeline
Police & Firemen's Retirement System of…9,257$163K<0.01%013F-HRTimeline
Quantbot Technologies LP8,822$156K<0.01%new13F-HRTimeline
KLP KAPITALFORVALTNING AS7,100$125K<0.01%013F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…6,945$123K<0.01%+6,54613F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.6,783$120K<0.01%-2,44113F-HRTimelineGroup
CWM, LLCin group CWM, LLC3,457$61K<0.01%+2,17513F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…2,926$51.6K<0.01%-88813F-HRTimelineGroup
Sterling Capital Management LLC2,416$42.6K<0.01%+1,47013F-HRTimeline
PENSION & WEALTH MANAGEMENT ADVISORS, I…2,135$37.7K0.01%013F-HRTimeline
Quarry LP1,773$31.3K0.01%+13913F-HRTimeline
State of Alaska, Department of Revenue1,630$28K<0.01%new13F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…1,527$27K<0.01%new13F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,522$26.9K<0.01%-6,50013F-HRTimelineGroup
RESOURCES MANAGEMENT CORP /CT/ /ADV1,500$26K<0.01%013F-HR/ATimeline
AMALGAMATED BANK1,347$24K<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1,184$22.1K<0.01%+15013F-HRTimelineGroup
Point72 (DIFC) Ltd892$15.7K<0.01%-1,41113F-HRTimeline
FSA Wealth Management LLC800$14.1K0.01%new13F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…733$12.9K<0.01%+213F-HRTimelineGroup
Arax Advisory Partners683$12.1K<0.01%new13F-HRTimeline
Larson Financial Group LLC536$9.46K<0.01%+53513F-HRTimeline
Essential Partners LLC405$7.15K<0.01%+38413F-HRTimeline
GAMMA Investing LLC396$6.99K<0.01%+2513F-HRTimeline
QUADRANT CAPITAL GROUP LLC354$6.25K<0.01%new13F-HRTimeline
EASTERN BANK288$5.08K<0.01%013F-HRTimeline
SBI Securities Co., Ltd.250$4.41K<0.01%new13F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.212$3.74K<0.01%new13F-HRTimelineGroup
Covestor Ltd125$2K<0.01%-113F-HRTimeline
IFP Advisors, Inc55$971<0.01%+5513F-HR/ATimeline
American Capital Advisory, LLC50$883<0.01%013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…35$618<0.01%new13F-HRTimelineGroup
ROTHSCHILD INVESTMENT LLC28$494<0.01%-2713F-HRTimeline
Parallel Advisors, LLC20$353<0.01%-2613F-HRTimeline
NISA INVESTMENT ADVISORS, LLC14$247<0.01%013F-HRTimeline
Allworth Financial LP9$159<0.01%+113F-HRTimeline