NBBK

NB Bancorp Inc$23.05 2.76%
FinancialsUSCUSIP 63945M107· EOD Jul 28, 2026◍ Confluence graph
Tracked 13F Holders
140
-122 QoQ
13F Value (tracked)
$362.6M
Insider Net · 180d
$670K
3↑ 0↓
Recent Filings
15
Smart-money sentimentBullish
BearishBullish
13F funds (latest Q)28 adding · 10 trimming
Insider net (180d)+$670K

Price & smart-money activity

$23.05 2.76%3Y +67.4%
$12.54$15.36$18.19$21.01$23.83202320242025202611613113101293219102213322516252820236234426442229957
Hover for who · click for detailEnd-of-day closing prices52w $16.87 – $23.05

Who owns NBBK?

140 tracked 13F filers

140 tracked 13F filers disclose a position in NBBK as of the latest SEC 13F filings, a combined $362.6M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
#FundPosition valueSharesLast moveAs ofHistory
1BlackRock, Inc.
$65.0M
3.1M
−0.6%
Reduced · −20K sh
Q1 2026
2VANGUARD CAPITAL MANAGEMENT LLC
$35.9M
1.7M
First observed position
No prior filed position
Q1 2026
3STATE STREET CORP
$27.3M
1.3M
+16%
Added · +179K sh
Q1 2026
4GEODE CAPITAL MANAGEMENT, LLC
$23.2M
1.1M
+14%
Added · +132K sh
Q1 2026
5GOLDMAN SACHS GROUP INC
$14.6M
692K
+16%
Added · +98K sh
Q1 2026
6DIMENSIONAL FUND ADVISORS LP
$11.0M
522K
+81%
Added · +234K sh
Q1 2026
7Nuveen, LLC
$10.3M
488K
+41%
Added · +141K sh
Q1 2026
8HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC
$9.5M
451K
−36%
Reduced · −251K sh
Q1 2026
9FMR LLC
$9.2M
438K
+14%
Added · +55K sh
Q1 2026
10VANGUARD PORTFOLIO MANAGEMENT LLC
$8.1M
386K
First observed position
No prior filed position
Q1 2026
11TWO SIGMA INVESTMENTS, LP
$7.8M
372K
+47%
Added · +119K sh
Q1 2026
12NORTHERN TRUST CORP
$7.1M
335K
+3.4%
Added · +11K sh
Q1 2026
13CHARLES SCHWAB INVESTMENT MANAGEMENT INC
$6.7M
318K
−3.3%
Reduced · −11K sh
Q1 2026
14SEI INVESTMENTS CO
$6.4M
302K
+110%
Added · +158K sh
Q1 2026
15MORGAN STANLEY
$5.9M
280K
+16%
Added · +38K sh
Q1 2026
16RENAISSANCE TECHNOLOGIES LLC
$5.6M
264K
+5.0%
Added · +13K sh
Q1 2026
17AMERICAN CENTURY COMPANIES INC
$5.6M
264K
+19%
Added · +42K sh
Q1 2026
18NEW YORK STATE COMMON RETIREMENT FUND
$5.5M
261K
+80%
Added · +116K sh
Q1 2026
19VANGUARD FIDUCIARY TRUST CO
$5.4M
254K
First observed position
No prior filed position
Q1 2026
20BRIDGEWAY CAPITAL MANAGEMENT, LLC
$4.4M
208K
+7.9%
Added · +15K sh
Q1 2026
21Qube Research & Technologies Ltd
$3.7M
175K
10×
Added · +158K sh
Q1 2026
22Empowered Funds, LLC
$3.5M
168K
+9.9%
Added · +15K sh
Q1 2026
23MILLENNIUM MANAGEMENT LLC
$3.3M
158K
+188%
Added · +103K sh
Q1 2026
24PANAGORA ASSET MANAGEMENT INC
$3.2M
150K
−0.2%
Reduced · −295 sh
Q1 2026
25Bank of New York Mellon Corp
$3.1M
148K
−0.8%
Reduced · −1K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is NBBK being bought or sold by institutions?

Last quarter, 4 funds opened a new position in NBBK and 24 added to an existing one, while 10 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
4
funds
Added
24
funds
Reduced
10
funds
Exited
0
funds

Funds that own NBBK also own

CompanyCo-held byCombined value
MICROSOFT CORPMSFT52 funds$22.9B
ALPHABET INC-CL AGOOGL52 funds$15.3B
VISA INC-CLASS A SHARESV52 funds$4.8B
AUTOMATIC DATA PROCESSINGADP52 funds$727.2M
NVIDIA CORPNVDA51 funds$35.4B
AMAZON.COM INCAMZN51 funds$16.5B
META PLATFORMS INC-CLASS AMETA51 funds$10.3B
ELI LILLY & COLLY51 funds$6.0B
COSTCO WHOLESALE CORPCOST51 funds$3.9B
WALMART INCWMT51 funds$3.8B
HOME DEPOT INCHD51 funds$3.1B
BANK OF AMERICA CORPBAC51 funds$2.9B

Ranked by how many of NBBK's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$670K
3 insiders
Sells · 180d
$0
0 insiders
Net
$670K
22 P/S txns
Signal
Net Buying
open-market
DateInsiderRoleActionSharesValue
May 15, 2026CAMPANELLI JOSEPH PPresident & CEO, DirectorBuy (P)500$10K
May 15, 2026CAMPANELLI JOSEPH PPresident & CEO, DirectorBuy (P)133$3K
May 15, 2026CAMPANELLI JOSEPH PPresident & CEO, DirectorBuy (P)400$8K
May 15, 2026CAMPANELLI JOSEPH PPresident & CEO, DirectorBuy (P)100$2K
May 15, 2026CAMPANELLI JOSEPH PPresident & CEO, DirectorBuy (P)767$15K
May 15, 2026CAMPANELLI JOSEPH PPresident & CEO, DirectorBuy (P)500$10K
May 15, 2026CAMPANELLI JOSEPH PPresident & CEO, DirectorBuy (P)253$5K
May 15, 2026CAMPANELLI JOSEPH PPresident & CEO, DirectorBuy (P)100$2K
May 15, 2026CAMPANELLI JOSEPH PPresident & CEO, DirectorBuy (P)247$5K
Apr 24, 2026Pascucci HopeDirectorBuy (P)10K$194K
Apr 24, 2026Pascucci HopeDirectorBuy (P)10K$195K
Apr 24, 2026CAMPANELLI JOSEPH PPresident & CEO, DirectorBuy (P)320$6K

Institutional ownership over time

21 funds-59 since Q3 2024
072143Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $9.8M

Recent filings

15 shown

Browse more

Build

Ask your agent what changed in NBBK

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/NBBK/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for NBBK.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for NBBK. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.