Security record
NBBK
NB Bancorp, Inc. Common Stock · Financial Services · Banks - Regional
72Tracked holders
-5Δ holders
15.62MShares held
$330.14MReported value
+2New positions
−7Exits
Momentum inputs (comparable managers):
holder breadth -6.5% ·
share flow -1.3% ·
net new positions -6.9%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| 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 | — |
| Q3 2025 | 18 | 0 | 11.24M | $198.31M | — | — |
| Q2 2025 | 15 | +2 | 10.38M | $185.46M | +2 | — |
| Q1 2025 | 10 | +1 | 4.36M | $78.87M | +2 | −1 |
| Q4 2024 | 9 | +2 | 3.93M | $71.03M | +2 | — |
| Q3 2024 | 6 | 0 | 2.69M | $49.87M | — | — |
| Q2 2024 | 6 | — | 2.26M | $33.86M | — | — |
Who holds it · Q2 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 3.33M | +8.0% | $70.40M | 0.0% | ▲ Add | 5 | SEC ↗ ×10 |
| 2 | Vanguard Capital Management Llc | 1.67M | -1.9% | $35.30M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 3 | State Street Global Advisors ✦ (passive) | 1.47M | +13.8% | $31.10M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 1.15M | +4.9% | $24.37M | 0.0% | ▲ Add | 9 | SEC ↗ ×2 |
| 5 | Dimensional Fund Advisors Lp | 753.32K | +44.2% | $15.92M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 6 | Goldman Sachs Group ✦ | 571.95K | -17.3% | $12.09M | 0.0% | ▼ Trim | 4 | SEC ↗ ×2 |
| 7 | Hotchkis & Wiley Capital Management… | 501.17K | +11.2% | $10.59M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 8 | Nuveen, LLC | 498.87K | +2.2% | $10.54M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 9 | Fidelity (FMR) ✦ | 497.31K | +13.6% | $10.51M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 10 | Northern Trust Corp | 360.49K | +7.5% | $7.62M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 11 | New York State Common Retirement… | 346.15K | +32.8% | $7.31M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | Charles Schwab Investment… | 318.61K | +0.1% | $6.73M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | Citadel Advisors ✦ | 289.81K | +149.0% | $6.12M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 14 | Two Sigma Investments ✦ | 277.03K | -25.5% | $5.85M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 15 | American Century Companies Inc | 261.87K | -0.7% | $5.53M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 16 | Morgan Stanley ✦ | 229.19K | -18.1% | $4.84M | 0.0% | ▼ Trim | 4 | SEC ↗ ×10 |
| 17 | Bank of New York Mellon Corp | 171.54K | +15.8% | $3.62M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 18 | D. E. Shaw & Co. ✦ | 149.93K | +113.0% | $3.17M | 0.0% | ▲ Add | 7 | SEC ↗ ×2 |
| 19 | Sei Investments Co | 142.35K | -52.9% | $3.01M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 20 | First Trust Advisors Lp | 142.25K | +1.4% | $3.01M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 21 | UBS Group AG | 140.41K | +84.5% | $2.97M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 22 | Renaissance Technologies ✦ | 131.44K | -50.2% | $2.78M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 23 | Alliancebernstein L.P. | 130.22K | 0.0% | $2.74M | 0.0% | Held | 3 | SEC ↗ |
| 24 | Qube Research & Technologies Ltd | 127.24K | -27.3% | $2.69M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 25 | Financial Engines Advisors L.L.C. | 126.79K | +0.8% | $2.68M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 26 | Marshall Wace ✦ | 123.11K | New | $2.60M | 0.0% | New | 1 | SEC ↗ ×2 |
| 27 | AQR Capital Management ✦ | 116.35K | -9.7% | $2.46M | 0.0% | ▼ Trim | 6 | SEC ↗ ×6 |
| 28 | Invesco Ltd. | 97.94K | -3.3% | $2.07M | 0.0% | ▼ Trim | 3 | SEC ↗ ×4 |
| 29 | Millennium Management ✦ | 81.45K | -48.5% | $1.72M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 30 | Swiss National Bank | 77.10K | 0.0% | $1.63M | 0.0% | Held | 3 | SEC ↗ |
| 31 | Credit Agricole S A | 70.00K | 0.0% | $1.48M | 0.0% | Held | 2 | SEC ↗ |
| 32 | Mackenzie Financial Corp | 67.44K | +32.5% | $1.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 33 | Creative Planning | 67.32K | -5.1% | $1.42M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 34 | Focus Partners Wealth | 65.73K | -29.2% | $1.39M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 35 | Bnp Paribas Financial Markets | 62.48K | +17.9% | $1.32M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 36 | Principal Financial Group Inc | 59.23K | +7.0% | $1.25M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 37 | Legal & General Group Plc | 56.72K | +7.0% | $1.20M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 38 | Rhumbline Advisers | 52.69K | -0.9% | $1.11M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 39 | Bank Of America Corp /De/ | 48.91K | -58.8% | $1.03M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 40 | Ameriprise Financial Inc | 46.90K | +11.8% | $990,976 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 41 | Citigroup Inc | 46.58K | +39.2% | $984,235 | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 42 | T. Rowe Price ✦ | 46.02K | +12.0% | $973,000 | 0.0% | ▲ Add | 9 | SEC ↗ |
| 43 | Federated Hermes, Inc. | 44.97K | +32.6% | $950,153 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 44 | Quantinno Capital Management LP | 44.14K | +70.1% | $932,615 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 45 | Mariner, LLC | 42.47K | -14.2% | $897,410 | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 46 | Deutsche Bank Ag\ | 41.02K | +31.9% | $866,837 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 47 | UBS AM, a distinct business unit of… | 38.36K | -2.5% | $810,526 | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 48 | State Of Wisconsin Investment Board | 38.17K | +56.5% | $806,511 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 49 | Arrowstreet Capital ✦ | 35.98K | -10.7% | $760,279 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 50 | Wells Fargo & Company/Mn | 35.19K | +117.8% | $743,459 | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 51 | Allspring Global Investments… | 30.43K | +3.2% | $657,875 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 52 | Raymond James Financial Inc | 29.91K | +200.7% | $632,083 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 53 | Franklin Resources Inc | 28.37K | +4.0% | $599,458 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 54 | LPL Financial LLC | 26.41K | +0.2% | $558,023 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 55 | Barclays Plc | 23.95K | +3.7% | $506,084 | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 56 | Russell Investments Group, Ltd. | 21.33K | +391.1% | $450,745 | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 57 | JPMorgan Chase ✦ | 19.28K | -46.6% | $408,608 | 0.0% | ▼ Trim | 4 | SEC ↗ ×4 |
| 58 | Commonwealth Equity Services, Llc | 19.29K | -14.3% | $407,490 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 59 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 18.74K | +0.2% | $395,976 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 60 | Mercer Global Advisors Inc /Adv | 16.99K | +45.2% | $359,046 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 61 | Zurcher Kantonalbank (Zurich… | 16.98K | 0.0% | $358,703 | 0.0% | Held | 3 | SEC ↗ |
| 62 | Cerity Partners LLC | 15.56K | -10.5% | $328,740 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 63 | Fifth Third Bancorp | 13.47K | +10.7% | $284,706 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 64 | IMC-Chicago, LLC | 13.03K | New | $275,261 | 0.0% | New | 1 | SEC ↗ |
| 65 | Royal Bank Of Canada | 12.41K | -6.5% | $262,000 | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 66 | Manufacturers Life Insurance… | 11.22K | +2.9% | $237,121 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 67 | Simplex Trading, Llc | 1.75K | +99.7% | $36,998 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 68 | Rockefeller Capital Management L.P. | 1.53K | 0.0% | $32,266 | 0.0% | Held | 3 | SEC ↗ |
| 69 | Osaic Holdings, Inc. | 1.30K | -0.6% | $27,531 | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 70 | Optiver Holding B.V. | 168 | -2.3% | $3,550 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 71 | Pnc Financial Services Group, Inc. | 57 | 0.0% | $1,204 | 0.0% | Held | 3 | SEC ↗ |
| 72 | Us Bancorp \De\ | 50 | -5.7% | $1,057 | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Marshall Wace | $2.60M | 0.0% |
| IMC-Chicago, LLC | $275,261 | 0.0% |
Exited
| Wellington Management | $14.96M | was 0.0% |
| Jane Street Group, Llc | $1.28M | was 0.0% |
| Lazard Asset Management Llc | $1.21M | was 0.0% |
| Susquehanna International… | $1.09M | was 0.0% |
| Connor, Clark & Lunn… | $679,486 | was 0.0% |
| Universal- Beteiligungs- und… | $354,946 | was 0.0% |
| Northwestern Mutual Wealth… | $4,888 | was 0.0% |
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: Q2 2026 ·
Methodology ·
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