National City, a large U.S. Midwest regional bank, posted a first-quarter loss Monday after a large loan loss provision, reduced its dividend and said it would raise $7 billion of equity capital, sending its shares down nearly 19 percent.

The Cleveland-based bank posted a net loss of $171 million, or 27 cents per share, after a loan loss provision of about $1.4 billion, compared with a profit of $319 million, or 50 cents per share, in the year-earlier period.