Security record · archived quarter
NBBK
NB Bancorp, Inc. Common Stock · Financial Services · Banks - Regional
74Tracked holders
+1Δ holders
16.12MShares held
$319.60MReported value
+1New positions
−0Exits
Momentum inputs (comparable managers):
holder breadth +1.4% ·
share flow +0.9% ·
net new positions +1.4%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 1 | +1 | 14 | $310 | +1 | n/a |
| Q2 2026 | 72 | -5 | 15.62M | $330.14M | +2 | −7 |
| Q1 2026 | 80 | +6 | 15.88M | $334.38M | +10 | −4 |
| Q4 2025 | 74 | +1 | 16.12M | $319.60M | +1 | n/a |
| Q3 2025 | 18 | 0 | 11.24M | $198.31M | n/a | n/a |
| Q2 2025 | 15 | +2 | 10.38M | $185.46M | +2 | n/a |
| Q1 2025 | 10 | +1 | 4.36M | $78.87M | +2 | −1 |
| Q4 2024 | 9 | +2 | 3.93M | $71.03M | +2 | n/a |
| Q3 2024 | 6 | 0 | 2.69M | $49.87M | n/a | n/a |
| Q2 2024 | 6 | n/a | 2.26M | $33.86M | n/a | n/a |
Who holds it · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 3.10M | +10.0% | $61.52M | 0.0% | ▲ Add | 3 | SEC ↗ ×10 |
| 2 | The Vanguard Group ✦ (passive) | 2.30M | +18.0% | $45.61M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 3 | Wellington Management ✦ | 1.47M | -19.5% | $29.16M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 4 | State Street Global Advisors ✦ (passive) | 1.11M | -6.9% | $22.09M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 5 | Geode Capital Management ✦ (passive) | 966.66K | +10.3% | $19.16M | 0.0% | ▲ Add | 7 | SEC ↗ ×2 |
| 6 | Hotchkis & Wiley Capital Management… | 701.99K | n/a | $13.91M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | Goldman Sachs Group ✦ | 593.89K | +13.1% | $11.77M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 8 | Fidelity (FMR) ✦ | 383.21K | +18.0% | $7.60M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 9 | Nuveen, LLC | 346.78K | n/a | $6.87M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 10 | Charles Schwab Investment… | 329.40K | n/a | $6.53M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | Northern Trust Corp | 324.31K | n/a | $6.43M | 0.0% | n/c | 1 | SEC ↗ ×6 |
| 12 | Dimensional Fund Advisors Lp | 288.03K | n/a | $5.71M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 13 | Alliancebernstein L.P. | 254.22K | n/a | $5.04M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | Two Sigma Investments ✦ | 252.84K | +22.8% | $5.01M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 15 | Marshall Wace ✦ | 251.51K | -9.2% | $4.98M | 0.0% | ▼ Trim | 4 | SEC ↗ ×2 |
| 16 | Renaissance Technologies ✦ | 251.27K | +126.6% | $4.98M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 17 | Morgan Stanley ✦ | 242.13K | +98.4% | $4.80M | 0.0% | ▲ Add | 2 | SEC ↗ ×11 |
| 18 | American Century Companies Inc | 221.85K | n/a | $4.40M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | Bank of New York Mellon Corp | 149.22K | n/a | $2.96M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 20 | UBS Group AG | 146.09K | n/a | $2.90M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 21 | New York State Common Retirement… | 144.38K | n/a | $2.86M | 0.0% | n/c | 1 | SEC ↗ |
| 22 | Sei Investments Co | 143.78K | n/a | $2.85M | 0.0% | n/c | 1 | SEC ↗ |
| 23 | First Trust Advisors Lp | 142.09K | n/a | $2.82M | 0.0% | n/c | 1 | SEC ↗ |
| 24 | Financial Engines Advisors L.L.C. | 117.71K | n/a | $2.33M | 0.0% | n/c | 1 | SEC ↗ |
| 25 | Citadel Advisors ✦ | 106.46K | +79.4% | $2.11M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 26 | AQR Capital Management ✦ | 105.01K | +28.7% | $2.08M | 0.0% | ▲ Add | 4 | SEC ↗ ×5 |
| 27 | Focus Partners Wealth | 91.37K | n/a | $1.81M | 0.0% | n/c | 1 | SEC ↗ |
| 28 | Bank Of America Corp /De/ | 90.64K | n/a | $1.80M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 29 | Jane Street Group, Llc | 81.64K | n/a | $1.62M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 30 | Ameriprise Financial Inc | 78.60K | n/a | $1.56M | 0.0% | n/c | 1 | SEC ↗ |
| 31 | Swiss National Bank | 77.10K | n/a | $1.53M | 0.0% | n/c | 1 | SEC ↗ |
| 32 | Bnp Paribas Financial Markets | 70.88K | n/a | $1.40M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | Barclays Plc | 70.77K | n/a | $1.40M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 34 | Principal Financial Group Inc | 64.47K | n/a | $1.28M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 35 | Invesco Ltd. | 63.34K | n/a | $1.26M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 36 | Legal & General Group Plc | 60.62K | n/a | $1.20M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 37 | JPMorgan Chase ✦ | 59.21K | -75.3% | $1.17M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 38 | Millennium Management ✦ | 54.87K | -89.9% | $1.09M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 39 | Creative Planning | 52.49K | n/a | $1.04M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | Rhumbline Advisers | 52.21K | n/a | $1.03M | 0.0% | n/c | 1 | SEC ↗ |
| 41 | Lazard Asset Management Llc | 52.16K | n/a | $1.03M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | D. E. Shaw & Co. ✦ | 45.77K | +7.4% | $907,082 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 43 | Wells Fargo & Company/Mn | 45.42K | n/a | $900,205 | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 44 | T. Rowe Price ✦ | 39.49K | +112.8% | $783,000 | 0.0% | ▲ Add | 7 | SEC ↗ |
| 45 | UBS AM, a distinct business unit of… | 39.19K | n/a | $776,786 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 46 | Mariner, LLC | 36.37K | n/a | $720,823 | 0.0% | n/c | 1 | SEC ↗ |
| 47 | California State Teachers… | 36.09K | n/a | $715,363 | 0.0% | n/c | 1 | SEC ↗ |
| 48 | Federated Hermes, Inc. | 34.24K | n/a | $678,577 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 49 | State Of Wisconsin Investment Board | 26.64K | n/a | $528,025 | 0.0% | n/c | 1 | SEC ↗ |
| 50 | Belvedere Trading LLC | 26.58K | n/a | $526,756 | 0.1% | n/c | 1 | SEC ↗ |
| 51 | Deutsche Bank Ag\ | 25.02K | n/a | $495,996 | 0.0% | n/c | 1 | SEC ↗ |
| 52 | LPL Financial LLC | 24.33K | n/a | $482,184 | 0.0% | n/c | 1 | SEC ↗ |
| 53 | Quantinno Capital Management LP | 23.32K | n/a | $462,222 | 0.0% | n/c | 1 | SEC ↗ |
| 54 | Citigroup Inc | 22.89K | n/a | $453,581 | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 55 | Commonwealth Equity Services, Llc | 21.50K | n/a | $426,040 | 0.0% | n/c | 1 | SEC ↗ |
| 56 | Point72 Asset Management ✦ | 20.91K | +69.6% | $414,337 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 57 | Connor, Clark & Lunn Investment… | 19.76K | n/a | $391,623 | 0.0% | n/c | 1 | SEC ↗ |
| 58 | Arrowstreet Capital ✦ | 18.87K | New | $373,924 | 0.0% | New | 1 | SEC ↗ |
| 59 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 18.55K | n/a | $367,661 | 0.0% | n/c | 1 | SEC ↗ |
| 60 | Qube Research & Technologies Ltd | 17.35K | n/a | $343,917 | 0.0% | n/c | 1 | SEC ↗ |
| 61 | Universal- Beteiligungs- und… | 16.85K | n/a | $333,887 | 0.0% | n/c | 1 | SEC ↗ |
| 62 | Mercer Global Advisors Inc /Adv | 16.70K | n/a | $330,956 | 0.0% | n/c | 1 | SEC ↗ |
| 63 | Hrt Financial Lp | 15.06K | n/a | $298,000 | 0.0% | n/c | 1 | SEC ↗ |
| 64 | Janus Henderson Group Plc | 14.80K | n/a | $293,188 | 0.0% | n/c | 1 | SEC ↗ |
| 65 | Royal Bank Of Canada | 12.40K | n/a | $246,000 | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 66 | Manufacturers Life Insurance… | 12.35K | n/a | $244,856 | 0.0% | n/c | 1 | SEC ↗ |
| 67 | Zurcher Kantonalbank (Zurich… | 9.68K | n/a | $191,778 | 0.0% | n/c | 1 | SEC ↗ |
| 68 | Russell Investments Group, Ltd. | 4.34K | n/a | $86,097 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 69 | Cwm, Llc | 3.64K | n/a | $72,000 | 0.0% | n/c | 1 | SEC ↗ |
| 70 | Rockefeller Capital Management L.P. | 1.53K | n/a | $30,265 | 0.0% | n/c | 1 | SEC ↗ |
| 71 | Osaic Holdings, Inc. | 1.31K | n/a | $25,983 | 0.0% | n/c | 1 | SEC ↗ |
| 72 | Optiver Holding B.V. | 212 | n/a | $4,202 | 0.0% | n/c | 1 | SEC ↗ |
| 73 | Pnc Financial Services Group, Inc. | 57 | n/a | $1,130 | 0.0% | n/c | 1 | SEC ↗ |
| 74 | Northwestern Mutual Wealth… | 6 | n/a | $119 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Arrowstreet Capital | $373,924 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 175 holders, 23.05M shares, $472.61M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
Aug 20
CAMPANELLI JOSEPH P
Officer, Director · President & CEO · 2.00K sh @ 21.75 · $43,500
Aug 20
Lapointe Jean-Pierre
Officer · SEVP and CFO · 200 sh @ 21.80 · $4,360
Open-market sales (S)
Aug 14
Henkin Kevin
Officer · 2.00K sh · $45,860
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q4 2025 ·
Methodology ·
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