NBBK — NB Bancorp, Inc.
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2023-12-28.
Performance
Technicals
Dividends
Measured signals that fired on NBBK
| date | signal | measured base rate |
|---|---|---|
| 2026-08-03 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-08-03 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-07-28 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-05-06 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
| 2026-04-10 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-20 | CAMPANELLI JOSEPH P President & CEO | Open-market purchase | 2.0K | 21.75 | 43.5K |
| 2026-08-20 | Lapointe Jean-Pierre SEVP and CFO | Open-market purchase | 200 | 21.80 | 4.4K |
| 2026-08-14 | Henkin Kevin EVP, Chief Credit Officer | Open-market sale | 2.0K | 22.93 | 45.9K |
| 2026-05-15 | CAMPANELLI JOSEPH P President & CEO | Open-market purchase | 767 | 19.18 | 14.7K |
| 2026-05-15 | CAMPANELLI JOSEPH P President & CEO | Open-market purchase | 500 | 19.19 | 9.6K |
| 2026-05-15 | CAMPANELLI JOSEPH P President & CEO | Open-market purchase | 500 | 19.16 | 9.6K |
| 2026-05-15 | CAMPANELLI JOSEPH P President & CEO | Open-market purchase | 400 | 19.18 | 7.7K |
| 2026-05-15 | CAMPANELLI JOSEPH P President & CEO | Open-market purchase | 253 | 19.20 | 4.9K |
| 2026-05-15 | CAMPANELLI JOSEPH P President & CEO | Open-market purchase | 247 | 19.21 | 4.7K |
| 2026-05-15 | CAMPANELLI JOSEPH P President & CEO | Open-market purchase | 133 | 19.17 | 2.5K |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 65.0M | 3.1M |
| Pertento Partners LLP | 46.5M | 2.2M |
| VANGUARD CAPITAL MANAGEMENT LLC | 35.9M | 1.7M |
| AltraVue Capital, LLC | 27.5M | 1.3M |
| STATE STREET CORP | 27.3M | 1.3M |
| GEODE CAPITAL MANAGEMENT, LLC | 23.2M | 1.1M |
| WELLINGTON MANAGEMENT GROUP LLP | 15.0M | 710.0K |
| GOLDMAN SACHS GROUP INC | 14.6M | 691.7K |
| DIMENSIONAL FUND ADVISORS LP | 11.0M | 522.4K |
| Nuveen, LLC | 10.3M | 488.0K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
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