Shares in Mass. bank drop after talk of more potential M&A

Key insight: Eastern Bankshares' stock tumbled Friday after its CEO said it would be in the best interest of shareholders to consider certain M&A deals.What's at stake: Eastern is the target of an activist investor that's calling on the bank to swear off M&A and securities restructurings.Supporting data: Eastern's shares were down by more than 5% by midday Friday.Executives at Eastern Bankshares in Boston, which is on the verge of completing its third bank acquisition in four years, say the company is focus ...