NB Bancorp (NBBK) Stock Chart & Stock Price History $17.58 -0.26 (-1.46%) Closing price 04:00 PM EasternExtended Trading$17.58 0.00 (-0.03%) As of 04:10 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock NB Bancorp Stock Price Performance The NB Bancorp (NBBK) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 5.69%, with a year-to-date return of -2.66%. In the past month, the stock has decreased 5.48%, reflecting recent market activity. As of the latest close, NB Bancorp traded at $17.84 with a market cap of $710.57 million and volume of 160,360 shares. 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Read our full terms of service and privacy policy. 5 Day Performance+4.21%1 Month Performance-5.48%3 Month Performance-6.49%Year-To-Date Performance-2.66%1 Year Performance-5.69% NBBK Stock Chart for Wednesday, October, 15, 2025 NBBK Chart by TradingView NB Bancorp Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization10/14/2025$17.25$17.84+3.42%$17.87$17.10160,360 shs$710.57 million10/13/2025$16.87$17.25+2.25%$17.27$16.83163,228 shs$687.00 million10/10/2025$17.35$16.87-2.77%$17.58$16.85171,872 shs$671.87 million10/09/2025$17.49$17.35-0.80%$17.68$17.27112,929 shs$691.05 million10/08/2025$17.85$17.49-2.02%$17.99$17.4792,585 shs$696.63 million10/07/2025$18.00$17.85-0.83%$18.21$17.84132,393 shs$710.89 million10/06/2025$17.69$18.00+1.75%$18.06$17.64156,738 shs$716.94 million10/03/2025$17.60$17.69+0.51%$17.83$17.54127,923 shs$704.59 million10/02/2025$17.58$17.60+0.11%$17.65$17.40138,449 shs$701.01 million10/01/2025$17.65$17.58-0.40%$17.68$17.44119,800 shs$700.14 million Get the Latest News and Ratings for NBBK and Related StocksEnter your email address below to receive the latest news and analysts' ratings for NB Bancorp and its competitors with MarketBeat's FREE daily newsletter. 09/30/2025$17.77$17.65-0.68%$17.81$17.35179,048 shs$703 million09/29/2025$18.13$17.77-1.99%$18.38$17.73143,447 shs$707.78 million09/26/2025$18.08$18.13+0.28%$18.35$18.03114,704 shs$722.12 million09/25/2025$18.07$18.08+0.06%$18.14$17.90111,743 shs$720.05 million09/24/2025$18.27$18.07-1.09%$18.47$17.95134,168 shs$719.73 million09/23/2025$18.44$18.27-0.92%$18.71$18.23110,447 shs$727.69 million09/22/2025$18.45$18.44-0.05%$18.48$18.2195,155 shs$734.39 million09/19/2025$18.96$18.45-2.69%$18.92$18.44606,609 shs$734.86 million09/18/2025$18.44$18.96+2.82%$19.00$18.47146,304 shs$755.18 million09/17/2025$18.38$18.44+0.33%$18.87$18.31154,475 shs$734.47 million09/16/2025$18.60$18.38-1.18%$18.65$18.28116,301 shs$732.08 million09/15/2025$18.50$18.60+0.54%$18.70$18.37195,279 shs$740.84 million Related Companies DAVE Stock Chart BMA Stock Chart ENVA Stock Chart BFH Stock Chart PRK Stock Chart BUR Stock Chart PGY Stock Chart SII Stock Chart MFH Stock Chart CUBI Stock Chart Receive NBBK Stock News and Ratings via EmailSign-up to receive the latest news and ratings for NB Bancorp and its competitors with MarketBeat's FREE daily newsletter. 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