Companies are dropping sustainability-linked loans as they face a tougher regulatory environment.

Norwegian fintech Vipps' consumers can use iPhones to make digital payments following Apple's settlement with regulators. Klarna gets hit with a money-laundering fine and more in our weekly global payments roundup.

The availability and visibility of Bank On-certified accounts, which aim to expand banking access, is contributing to a decrease in the percentage of U.S. households that are unbanked, according to bankers and government officials.

The megabank disclosed that regulators are looking at its anti-money-laundering and sanctions compliance. Wells Fargo was recently hit with an enforcement action over similar matters.

The danger for the central bankers is that "they go too fast or too slow and that risk is higher now than it was six months ago," BofA Chief Executive Brian Moynihan said.

BofA had nearly 1,100 artificial intelligence and machine learning patents and pending applications within its portfolio at midyear, and more than half have been granted already.

Berkshire Hathaway reaped about $370 million selling the stock, marking Warren Buffett's 16th round of disposals since mid-July.

Caution among business owners has held down loans at the megabank and many of its smaller competitors. But third-quarter earnings suggest activity is rebounding.

Bank of America, Wells Fargo and U.S. Bank are among the institutions taking advantage of regulatory tailwinds to get more aggressive.

Wall Street banks are expected to capitalize on ultra-low credit spreads and strong demand from investors after they report quarterly results.