The Securities and Exchange Commission moved to require states and local governments to disclose bank loans and privately placed debt, seeking to address concerns that bondholders are being left in the dark about a fast-growing segment of public finance.

The SEC adopted amendments to a rule, known as 15c2-12, that obligates securities dealers to ensure that municipalities report updated financial information and material events to bondholders. The amendments will force the disclosure of loans incurred by municipalities, loan defaults and changes to financial covenants that affect bondholders within 10 business days.

Direct lending by banks has proliferated since the financial crisis as states, local governments and nonprofits found they could borrow at rates comparable to those on bonds, without the fees or disclosure requirements associated with public-debt offerings. Commercial bank loans to municipalities nearly tripled to $190.5 billion by the first quarter of 2018 from $66.5 billion at the end of 2010, according to the Federal Deposit Insurance Corp.

Read more in American Banker.