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Newburyport Today
By the People, for the People
Short Interest in NB Bancorp Rises 18.6%
Increase in short positions suggests bearish sentiment on the regional bank's stock
Apr. 18, 2026 at 3:38am
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The rise in short interest in NB Bancorp's stock suggests growing investor skepticism about the regional bank's financial outlook.Newburyport TodayNB Bancorp, Inc. (NASDAQ:NBBK), a community bank based in Newburyport, Massachusetts, saw a significant 18.6% increase in short interest during March. As of March 31st, over 1.78 million shares were sold short, representing 4.2% of the company's total shares outstanding.
Why it matters
The rise in short interest suggests that some investors are betting against NB Bancorp's stock performance, potentially indicating concerns about the bank's financial health or growth prospects. Short selling activity can influence a stock's price and trading volume, so this development is worth monitoring for investors tracking the regional banking sector.
The details
The short interest ratio, which measures the number of shares sold short compared to the stock's average daily trading volume, increased to 7.3 days as of March 31st. This means it would take short sellers about a week to cover their positions based on typical trading volumes. Insider buying activity also increased, with the CEO purchasing an additional 5,000 shares in early March.
- As of March 31st, 2026, short interest in NB Bancorp totaled 1,785,635 shares.
- This represents an 18.6% increase from the 1,505,269 shares that were short as of March 15th, 2026.
The players
NB Bancorp, Inc.
A community bank headquartered in Newburyport, Massachusetts that offers deposit and lending services to individuals and small-to-medium sized businesses across Northeast Massachusetts and southern New Hampshire.
Joseph P. Campanelli
The CEO of NB Bancorp, who purchased 5,000 additional shares of the company's stock in early March 2026.
What’s next
Investors will be watching to see if the elevated short interest in NB Bancorp persists or if it declines in the coming weeks, which could provide insights into market sentiment around the regional bank's outlook.
The takeaway
The increase in short interest in NB Bancorp's stock highlights the potential bearish sentiment among some investors towards the regional bank's performance. This development bears watching, as short-selling activity can influence a stock's price and trading volume.
