Berkshire Hills Bancorp declined to detail the savings it expects from the downsizing, though one analyst estimated it could shave $3 million from the company's annual noninterest expenses.

The calling off of the TD-First Horizon deal drew the most headlines, but 14 agreements involving the purchase of a bank were canceled last year.

In this month's roundup of top banking news: The potential impact of Capital One's purchase of Discover, Citi's use of generative AI for its developers, the downfall of Heartland Tri-State Bank and more.

Rep. Maxine Waters, ranking member of the House Financial Services Committee, led the letter, spurred by the recent merger announcement between Capital One and Discover, which the letter said would enable the merged company "to influence multiple points of the marketplace."

The top five bank M&A deals had a combined target asset volume of more than $480 billion

Bharat Masrani has spent a decade as the Canadian bank's top executive and is pushing 70. But as the bank undergoes a U.S. Justice Department probe, it's unclear when he'll step down or who's next in line.

The lawmakers, led by Sen. Elizabeth Warren, D-Mass., said the deal would further anti-consumer bank consolidation, but also criticized the OCC's proposed changes to the merger process, asking that they be strengthened.

BMO Financial Group doubled its mainframe capacity, prepared a cloud staging platform and used chaos engineering to ensure its Bank of the West integration went smoothly.

The two companies in the largest bank merger since the 2008 financial crisis released details of their agreement. It leaves the door open for Discover to field better offers, though the payments company would pay a break-up fee of 4% if it accepts one.

In the wake of the largest U.S. bank deal in more than 15 years, industry executives offered mixed views about the prospects for more big acquisitions. They also spoke about the deal's impact on competition in the credit card business.