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The price of NB Bancorp, Inc. (NBBK) on October 9, 2026 is 22.12 USD, -1.91% on the day. Over 52 weeks the stock traded between 16.84 USD and 23.47 USD; the price now sits 80% of the way up that range. Over the past year the price changed by +26.47%. The P/E ratio is 18.8, which is above the sector median (13.2). Market capitalization is 990.21 million USD, rank 4 among 23 stocks of the same industry with a known capitalization.
Closing prices for 9 October 2026
Next earnings report: 28 October 2026 · Earnings calendar
Change over the period shown (line colour): +28.23 %
NB Bancorp, Inc. trades on Nasdaq under the ticker NBBK. The company belongs to the Financials sector. The trading history on this page starts on 28 December 2023.
Over the past 52 weeks NBBK has traded between 16.84 $ and 23.47 $. As of 9 October 2026 the price stood 79.65 % of the way from the 52-week low to the high.
Over one year NBBK shares rose 26.47 %; over six months they fell 1.25 %. Volatility over 90 days is 21.91 %. Dividends are not included: this is price change only, as of 9 October 2026.
NBBK trades at a price-to-earnings ratio of 18.8, above the sector median of 13.2. Price to sales is 2.7, above the sector median of 2.7. Price to book is 1.2, below the sector median of 1.3. Calculated from reports for the period ending 31 March 2026.
| Date | Open | High | Low | Close | Volume, shares |
|---|---|---|---|---|---|
| 9 October 2026 | 22.55 | 22.55 | 22.12 | 22.12 | 179,600 |
| 8 October 2026 | 22.26 | 22.60 | 22.17 | 22.55 | 197,800 |
| 7 October 2026 | 22.13 | 22.41 | 22.08 | 22.27 | 160,600 |
| 6 October 2026 | 22.54 | 22.63 |
The series is stated in the current share scale after splits; dividends are not included in the price
Based on the last 12 months of reports, through 31 March 2026
The sector median covers every company in the sector on the US market, loss-making ones included.
No events for this security recently.
Address:1063 GREAT PLAIN AVENUE, NEEDHAM, MA, 02492, US
NB Bancorp, Inc. reported revenue of 365M $ and net income of 53M $ over the last four quarters. Net margin is 14.44 %. Revenue changed by +21.05 % year over year. Earnings per share are 1.37 $. Market capitalisation is 990M $.
NBBK has a return on equity of 6.24 %, below the sector median of 9.80 %. Return on assets is 0.73 %, below the sector median of 1.13 %.
| 6M |
| TCBXThird Coast Bancshares, Inc. | 41.34 | −1.03 % | 5M |
| HBCPHome Bancorp, Inc. | 65.67 | −1.54 % | 4M |
| AVBCAvidia Bancorp, Inc. | 21.89 | −0.59 % | 4M |
| FBLAFB Bancorp, Inc. | 16.77 | −2.78 % | 2M |
| 22.32 |
| 22.46 |
| 191,500 |
| 5 October 2026 | 22.53 | 22.69 | 22.27 | 22.41 | 217,800 |
| 2 October 2026 | 22.53 | 22.77 | 22.30 | 22.57 | 222,000 |
| 1 October 2026 | 22.02 | 22.28 | 21.70 | 22.27 | 427,300 |
| 30 September 2026 | 22.27 | 22.34 | 22.03 | 22.12 | 269,600 |
| 29 September 2026 | 22.56 | 22.65 | 22.05 | 22.27 | 362,200 |
| 28 September 2026 | 22.47 | 22.69 | 22.33 | 22.56 | 287,500 |
| 25 September 2026 | 22.54 | 22.72 | 22.43 | 22.60 | 240,900 |
| 24 September 2026 | 22.47 | 22.67 | 22.24 | 22.50 | 202,000 |
| 23 September 2026 | 22.75 | 22.80 | 22.33 | 22.39 | 223,800 |
| 22 September 2026 | 22.85 | 23.00 | 22.60 | 22.78 | 222,000 |
| 21 September 2026 | 22.81 | 23.02 | 22.65 | 22.74 | 290,800 |
| 18 September 2026 | 22.56 | 22.80 | 22.31 | 22.78 | 529,600 |
| 17 September 2026 | 23.11 | 23.17 | 22.62 | 22.66 | 264,700 |
| 16 September 2026 | 22.75 | 22.87 | 22.41 | 22.73 | 267,000 |
| 15 September 2026 | 22.78 | 22.93 | 22.58 | 22.84 | 216,000 |
| 14 September 2026 | 22.69 | 23.25 | 22.69 | 22.89 | 265,100 |