NBBK — NB BANCORP INC
Reported value held$242.71M
Funds holding (latest)36
SectorFinancials
Funds holding (Q2 2026)29
Institutional value$179.38M · 8.54M sh
New / Add / Cut / Exit2 / 16 / 9 / 3
Top-5 / Top-10 concentration69.7% / 85.6%
Institutional holdings change
Reducing -4.5%
(-404.58K sh)
Institutional value change
Down -4.3%
As of Q2 2026, 29 SEC-registered investment managers reported holding NBBK (NB BANCORP INC) in their latest 13F filings, with a combined reported value of $179.38M across 8.54M shares. That is -4.5% by share count (-404.58K shares) versus the previous quarter, while reported value moved -4.3%. Ownership is concentrated: the five largest holders account for 69.7% of reported value and the top ten for 85.6%.
Compared with the prior quarter, 2 opened new positions, 16 added to existing stakes, 9 trimmed, 3 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
NBBK is classified in the Financials sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2026 — 29 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 3.33M | $70.40M | 0.00% | Add |
| Geode Capital Management history | 1.15M | $24.37M | 0.00% | Add |
| Goldman Sachs Group history | 571.95K | $12.09M | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | 497.31K | $10.51M | 0.00% | Add |
| Northern Trust Corp history | 360.49K | $7.62M | 0.00% | Add |
| Citadel Advisors history | 355.11K | $7.50M | 0.00% | Add |
| Charles Schwab Investment Management history | 318.61K | $6.73M | 0.00% | Hold |
| Two Sigma Investments history | 277.03K | $5.85M | 0.01% | Reduce |
| Morgan Stanley history | 229.19K | $4.84M | 0.00% | Reduce |
| BNY Mellon history | 171.54K | $3.62M | 0.00% | Add |
| D. E. Shaw & Co history | 149.93K | $3.17M | 0.00% | Add |
| UBS Group AG history | 140.41K | $2.97M | 0.00% | Add |
| Renaissance Technologies history | 131.44K | $2.78M | 0.00% | Reduce |
| Marshall Wace history | 123.11K | $2.60M | 0.00% | New |
| AQR Capital Management history | 116.35K | $2.46M | 0.00% | Reduce |
| Invesco Ltd history | 97.94K | $2.07M | 0.00% | Reduce |
| Millennium Management history | 81.45K | $1.72M | 0.00% | Reduce |
| Principal Global Investors history | 59.23K | $1.25M | 0.00% | Add |
| Legal & General Investment Management America history | 56.72K | $1.20M | 0.00% | Add |
| Bank of America Corp history | 48.91K | $1.03M | 0.00% | Reduce |
| Citigroup Inc history | 46.58K | $984.24K | 0.00% | Add |
| Deutsche Bank AG history | 41.02K | $866.84K | 0.00% | Add |
| Arrowstreet Capital history | 35.98K | $760.28K | 0.00% | Reduce |
| Wells Fargo & Co history | 35.19K | $743.46K | 0.00% | Add |
| Franklin Resources history | 28.37K | $599.46K | 0.00% | Add |
| JPMorgan Chase & Co history | 19.28K | $408.61K | 0.00% | New |
| Manulife Financial history | 11.22K | $237.12K | 0.00% | Add |
| PNC Financial Services history | 57 | $1.20K | 0.00% | Hold |
| T. Rowe Price Associates history | 46.02K | $973 | 0.00% | Add |
Q1 2026 — 30 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 3.08M | $64.98M | 0.00% | Reduce |
| Geode Capital Management history | 1.10M | $23.16M | 0.00% | Add |
| Wellington Management Group history | 710.00K | $14.96M | 0.00% | Reduce |
| Goldman Sachs Group history | 691.67K | $14.57M | 0.00% | Add |
| Fidelity Management & Research (FMR) history | 437.73K | $9.22M | 0.00% | Add |
| Two Sigma Investments history | 371.81K | $7.83M | 0.01% | Add |
| Northern Trust Corp history | 335.36K | $7.07M | 0.00% | Add |
| Charles Schwab Investment Management history | 318.37K | $6.71M | 0.00% | Reduce |
| Morgan Stanley history | 279.87K | $5.90M | 0.00% | Add |
| Renaissance Technologies history | 263.91K | $5.56M | 0.01% | Add |
| Citadel Advisors history | 165.47K | $3.49M | 0.00% | Add |
| Millennium Management history | 158.24K | $3.33M | 0.00% | Add |
| BNY Mellon history | 148.07K | $3.12M | 0.00% | Reduce |
| AQR Capital Management history | 128.82K | $2.71M | 0.00% | Add |
| Bank of America Corp history | 118.80K | $2.50M | 0.00% | Add |
| Invesco Ltd history | 101.24K | $2.13M | 0.00% | Add |
| UBS Group AG history | 76.12K | $1.60M | 0.00% | Reduce |
| D. E. Shaw & Co history | 70.39K | $1.48M | 0.00% | Add |
| Lazard Asset Management history | 57.30K | $1.21M | 0.00% | Add |
| Principal Global Investors history | 55.36K | $1.17M | 0.00% | Reduce |
| Legal & General Investment Management America history | 53.01K | $1.12M | 0.00% | Reduce |
| Arrowstreet Capital history | 40.28K | $848.62K | 0.00% | Add |
| Citigroup Inc history | 33.45K | $704.81K | 0.00% | Add |
| Deutsche Bank AG history | 31.11K | $655.40K | 0.00% | Add |
| Franklin Resources history | 27.27K | $574.58K | 0.00% | New |
| Wells Fargo & Co history | 16.16K | $340.43K | 0.00% | Reduce |
| Janus Henderson Group history | 14.80K | $311.84K | 0.00% | Hold |
| Manulife Financial history | 10.91K | $229.83K | 0.00% | Reduce |
| PNC Financial Services history | 57 | $1.20K | 0.00% | Hold |
| T. Rowe Price Associates history | 41.07K | $866 | 0.00% | Add |
Q4 2025 — 33 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 3.10M | $61.52M | 0.00% | Add |
| Vanguard Group history | 2.30M | $45.61M | 0.00% | Add |
| Wellington Management Group history | 1.47M | $29.16M | 0.01% | Reduce |
| Geode Capital Management history | 966.66K | $19.16M | 0.00% | Add |
| Goldman Sachs Group history | 593.89K | $11.77M | 0.00% | Add |
| Fidelity Management & Research (FMR) history | 383.21K | $7.60M | 0.00% | Add |
| Charles Schwab Investment Management history | 329.40K | $6.53M | 0.00% | Add |
| Northern Trust Corp history | 324.31K | $6.43M | 0.00% | Add |
| Two Sigma Investments history | 252.84K | $5.01M | 0.01% | Add |
| Marshall Wace history | 251.51K | $4.98M | 0.01% | Reduce |
| Renaissance Technologies history | 251.27K | $4.98M | 0.01% | Add |
| Morgan Stanley history | 242.13K | $4.80M | 0.00% | Add |
| Citadel Advisors history | 153.93K | $3.05M | 0.00% | Add |
| BNY Mellon history | 149.22K | $2.96M | 0.00% | Add |
| UBS Group AG history | 146.09K | $2.90M | 0.00% | Reduce |
| AQR Capital Management history | 105.01K | $2.08M | 0.00% | Add |
| Bank of America Corp history | 90.64K | $1.80M | 0.00% | Add |
| Principal Global Investors history | 64.47K | $1.28M | 0.00% | Add |
| Invesco Ltd history | 63.34K | $1.26M | 0.00% | Add |
| Legal & General Investment Management America history | 60.62K | $1.20M | 0.00% | Reduce |
| JPMorgan Chase & Co history | 59.21K | $1.17M | 0.00% | Reduce |
| Millennium Management history | 54.87K | $1.09M | 0.00% | Reduce |
| Lazard Asset Management history | 52.16K | $1.03M | 0.00% | Add |
| D. E. Shaw & Co history | 45.77K | $907.08K | 0.00% | Add |
| Wells Fargo & Co history | 45.42K | $900.21K | 0.00% | Add |
| Deutsche Bank AG history | 25.02K | $496.00K | 0.00% | Add |
| Citigroup Inc history | 22.89K | $453.58K | 0.00% | Reduce |
| Point72 Asset Management history | 20.91K | $414.34K | 0.00% | Add |
| Arrowstreet Capital history | 18.87K | $373.92K | 0.00% | New |
| Janus Henderson Group history | 14.80K | $293.19K | 0.00% | Hold |
| Manulife Financial history | 12.35K | $244.86K | 0.00% | Add |
| PNC Financial Services history | 57 | $1.13K | 0.00% | Add |
| T. Rowe Price Associates history | 39.49K | $783 | 0.00% | Add |
Q3 2025 — 33 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 2.82M | $49.81M | 0.00% | Reduce |
| Vanguard Group history | 1.95M | $34.42M | 0.00% | Reduce |
| Wellington Management Group history | 1.83M | $32.25M | 0.01% | Reduce |
| Geode Capital Management history | 876.65K | $15.48M | 0.00% | Reduce |
| Millennium Management history | 543.28K | $9.59M | 0.00% | Reduce |
| Goldman Sachs Group history | 524.90K | $9.26M | 0.00% | Add |
| UBS Group AG history | 378.35K | $6.68M | 0.00% | Add |
| Fidelity Management & Research (FMR) history | 324.68K | $5.73M | 0.00% | Add |
| Northern Trust Corp history | 309.70K | $5.47M | 0.00% | Reduce |
| Charles Schwab Investment Management history | 287.45K | $5.07M | 0.00% | Reduce |
| Marshall Wace history | 277.10K | $4.89M | 0.01% | Reduce |
| Two Sigma Investments history | 205.87K | $3.63M | 0.01% | Add |
| Morgan Stanley history | 122.07K | $2.15M | 0.00% | Reduce |
| JPMorgan Chase & Co history | 119.68K | $2.11M | 0.00% | Add |
| Renaissance Technologies history | 110.90K | $1.96M | 0.00% | Reduce |
| BNY Mellon history | 98.83K | $1.74M | 0.00% | Reduce |
| Citadel Advisors history | 88.63K | $1.56M | 0.00% | Add |
| AQR Capital Management history | 81.57K | $1.44M | 0.00% | Add |
| Bank of America Corp history | 65.42K | $1.15M | 0.00% | Reduce |
| Legal & General Investment Management America history | 62.01K | $1.09M | 0.00% | Hold |
| Invesco Ltd history | 52.88K | $933.26K | 0.00% | Add |
| Lazard Asset Management history | 51.77K | $913.74K | 0.00% | New |
| Principal Global Investors history | 44.09K | $778.19K | 0.00% | Add |
| D. E. Shaw & Co history | 42.62K | $752.31K | 0.00% | Add |
| Citigroup Inc history | 35.59K | $628.18K | 0.00% | Reduce |
| Balyasny Asset Management history | 27.24K | $480.80K | 0.00% | New |
| Wells Fargo & Co history | 26.85K | $473.95K | 0.00% | Add |
| Deutsche Bank AG history | 20.18K | $356.21K | 0.00% | Reduce |
| Janus Henderson Group history | 14.80K | $261.37K | 0.00% | Hold |
| Point72 Asset Management history | 12.32K | $217.54K | 0.00% | Add |
| Manulife Financial history | 11.65K | $205.55K | 0.00% | Reduce |
| PNC Financial Services history | 35 | $618 | 0.00% | New |
| T. Rowe Price Associates history | 18.56K | $328 | 0.00% | Add |
Q2 2025 — 30 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 2.88M | $51.46M | 0.00% | Reduce |
| Vanguard Group history | 1.98M | $35.40M | 0.00% | Reduce |
| Wellington Management Group history | 1.86M | $33.23M | 0.01% | Add |
| Geode Capital Management history | 883.14K | $15.78M | 0.00% | Reduce |
| Millennium Management history | 643.07K | $11.49M | 0.01% | Add |
| Goldman Sachs Group history | 474.76K | $8.48M | 0.00% | Add |
| Northern Trust Corp history | 316.76K | $5.66M | 0.00% | Reduce |
| Marshall Wace history | 315.46K | $5.63M | 0.01% | Add |
| Fidelity Management & Research (FMR) history | 301.28K | $5.38M | 0.00% | Add |
| Charles Schwab Investment Management history | 298.99K | $5.34M | 0.00% | Reduce |
| Deutsche Bank AG history | 178.05K | $3.18M | 0.00% | Reduce |
| Renaissance Technologies history | 144.15K | $2.57M | 0.00% | Reduce |
| Two Sigma Investments history | 141.23K | $2.52M | 0.01% | Reduce |
| Morgan Stanley history | 134.34K | $2.40M | 0.00% | Reduce |
| Bank of America Corp history | 129.95K | $2.32M | 0.00% | Reduce |
| UBS Group AG history | 103.84K | $1.85M | 0.00% | Add |
| BNY Mellon history | 103.54K | $1.85M | 0.00% | Add |
| JPMorgan Chase & Co history | 100.07K | $1.79M | 0.00% | Reduce |
| Legal & General Investment Management America history | 62.01K | $1.11M | 0.00% | Add |
| AQR Capital Management history | 47.30K | $844.71K | 0.00% | Add |
| Invesco Ltd history | 42.74K | $763.41K | 0.00% | Add |
| Principal Global Investors history | 40.27K | $719.17K | 0.00% | New |
| Citigroup Inc history | 37.30K | $666.20K | 0.00% | Reduce |
| Citadel Advisors history | 32.80K | $585.72K | 0.00% | Add |
| Wells Fargo & Co history | 22.47K | $401.39K | 0.00% | Reduce |
| D. E. Shaw & Co history | 18.12K | $323.55K | 0.00% | Add |
| Janus Henderson Group history | 14.80K | $264.55K | 0.00% | Reduce |
| Manulife Financial history | 12.50K | $223.21K | 0.00% | Reduce |
| Point72 Asset Management history | 9.00K | $160.74K | 0.00% | New |
| T. Rowe Price Associates history | 17.65K | $316 | 0.00% | Add |
Q1 2025 — 28 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 3.14M | $56.76M | 0.00% | Reduce |
| Vanguard Group history | 2.11M | $38.11M | 0.00% | Add |
| Wellington Management Group history | 1.61M | $29.10M | 0.01% | Add |
| Geode Capital Management history | 901.66K | $16.30M | 0.00% | Add |
| Goldman Sachs Group history | 471.42K | $8.52M | 0.00% | Reduce |
| Northern Trust Corp history | 347.82K | $6.29M | 0.00% | Reduce |
| Charles Schwab Investment Management history | 311.44K | $5.63M | 0.00% | Reduce |
| Bank of America Corp history | 303.72K | $5.49M | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | 294.58K | $5.32M | 0.00% | Add |
| Millennium Management history | 253.54K | $4.58M | 0.00% | Add |
| Morgan Stanley history | 251.64K | $4.55M | 0.00% | Reduce |
| JPMorgan Chase & Co history | 212.41K | $3.84M | 0.00% | Reduce |
| Renaissance Technologies history | 202.20K | $3.65M | 0.01% | Add |
| Deutsche Bank AG history | 180.81K | $3.27M | 0.00% | Reduce |
| Two Sigma Investments history | 150.40K | $2.72M | 0.01% | Add |
| Marshall Wace history | 118.62K | $2.14M | 0.00% | New |
| BNY Mellon history | 101.63K | $1.84M | 0.00% | Hold |
| Legal & General Investment Management America history | 59.78K | $1.08M | 0.00% | Add |
| UBS Group AG history | 57.89K | $1.05M | 0.00% | Reduce |
| Citigroup Inc history | 45.99K | $831.08K | 0.00% | Reduce |
| Janus Henderson Group history | 32.64K | $613.38K | 0.00% | Add |
| Invesco Ltd history | 29.63K | $535.45K | 0.00% | Add |
| Wells Fargo & Co history | 23.37K | $422.28K | 0.00% | Add |
| D. E. Shaw & Co history | 16.52K | $298.53K | 0.00% | Add |
| Citadel Advisors history | 14.90K | $269.24K | 0.00% | Reduce |
| AQR Capital Management history | 14.00K | $252.94K | 0.00% | New |
| Manulife Financial history | 13.47K | $243.44K | 0.00% | Add |
| T. Rowe Price Associates history | 17.09K | $309 | 0.00% | Add |
New Positions (Q2 2026)
- Marshall Wace 123.11K sh · $2.60M
- JPMorgan Chase & Co 19.28K sh · $408.61K
Fully Exited (vs previous quarter)
- Wellington Management Group sold 710.00K sh · $14.96M
- Lazard Asset Management sold 57.30K sh · $1.21M
- Janus Henderson Group sold 14.80K sh · $311.84K
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 | Q1 2024 | Q4 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| BlackRock Inc | 3.33M | 3.08M | 3.10M | 2.82M | 2.88M | 3.14M | 3.27M | 3.30M | — | — | — |
| Geode Capital Management | 1.15M | 1.10M | 966.66K | 876.65K | 883.14K | 901.66K | 880.70K | 885.24K | 868.97K | 386.18K | — |
| Goldman Sachs Group | 571.95K | 691.67K | 593.89K | 524.90K | 474.76K | 471.42K | 581.35K | 649.17K | 500.48K | 237.79K | 79.87K |
| Fidelity Management & Research (FMR) | 497.31K | 437.73K | 383.21K | 324.68K | 301.28K | 294.58K | 250.23K | 230.44K | 1.33K | — | — |
| Northern Trust Corp | 360.49K | 335.36K | 324.31K | 309.70K | 316.76K | 347.82K | 358.54K | 342.55K | 89.81K | 72.40K | — |
| Citadel Advisors | 355.11K | 165.47K | 153.93K | 88.63K | 32.80K | 14.90K | 89.31K | 72.70K | 16.10K | — | — |
| Charles Schwab Investment Management | 318.61K | 318.37K | 329.40K | 287.45K | 298.99K | 311.44K | 319.44K | 315.30K | 311.69K | 216.29K | — |
| Two Sigma Investments | 277.03K | 371.81K | 252.84K | 205.87K | 141.23K | 150.40K | 112.11K | 126.78K | 55.53K | — | — |
| Morgan Stanley | 229.19K | 279.87K | 242.13K | 122.07K | 134.34K | 251.64K | 344.23K | 623.59K | 229.88K | 77.96K | 3.50K |
| BNY Mellon | 171.54K | 148.07K | 149.22K | 98.83K | 103.54K | 101.63K | 101.63K | 94.22K | 120.69K | — | — |
| D. E. Shaw & Co | 149.93K | 70.39K | 45.77K | 42.62K | 18.12K | 16.52K | 11.73K | — | — | — | — |
| UBS Group AG | 140.41K | 76.12K | 146.09K | 378.35K | 103.84K | 57.89K | 79.66K | 72.60K | 77.74K | 27.50K | — |
| Renaissance Technologies | 131.44K | 263.91K | 251.27K | 110.90K | 144.15K | 202.20K | 165.50K | 76.20K | 70.70K | 15.50K | — |
| Marshall Wace | 123.11K | — | 251.51K | 277.10K | 315.46K | 118.62K | — | — | — | 94.38K | — |
| AQR Capital Management | 116.35K | 128.82K | 105.01K | 81.57K | 47.30K | 14.00K | — | — | — | — | — |
| Invesco Ltd | 97.94K | 101.24K | 63.34K | 52.88K | 42.74K | 29.63K | 19.48K | 18.04K | 32.76K | — | — |
| Millennium Management | 81.45K | 158.24K | 54.87K | 543.28K | 643.07K | 253.54K | 224.17K | 92.04K | 47.22K | 289.84K | — |
| Principal Global Investors | 59.23K | 55.36K | 64.47K | 44.09K | 40.27K | — | — | — | — | — | — |
| Legal & General Investment Management America | 56.72K | 53.01K | 60.62K | 62.01K | 62.01K | 59.78K | 55.10K | 55.32K | 3.36K | — | — |
| Bank of America Corp | 48.91K | 118.80K | 90.64K | 65.42K | 129.95K | 303.72K | 312.70K | 517.87K | 198.88K | 28.12K | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details