The Bank of Montreal announced Friday that it is acquiring Wisconsin's Marshall & Ilsley Corp., whose M&I Bank has significant operations in Minnesota, for about $4.1 billion in stock.
The deal will double Bank of Montreal's U.S. deposits and branches and may spark more mergers among regional banks. It values M&I at $7.75 a share, 34 percent higher than Thursday's closing price of $5.79 on the New York Stock Exchange.
M&I, with headquarters in Milwaukee, has 200 locations in Wisconsin, 33 in Minnesota, and others in Arizona, Illinois, Kansas, Missouri, Florida and Indiana, according to the FDIC. The Minnesota offices are in the Twin Cities area except for one in Duluth.
The bank has 9,100 employees, including 450 in Minnesota. An M&I spokeswoman said the new owners will assess staffing needs and that no decisions have been made about organizational changes. The bank intends to be "thoughtful and measured" in its approach, said spokeswoman Sara Schmitz.
The news sent shares of M&I surging 18 percent, up $1.06, to close at $6.85 Friday, while U.S.-traded shares of the Bank of Montreal fell $4.40, or 7 percent, to $57.26.
Canadian banks, ranked the soundest in the world by the World Economic Forum, weathered the economic crisis far better than counterparts in other countries. At the same time, many U.S. regional banks have become possible takeover targets, including TCF Financial, headquartered in Wayzata.
Bank of Montreal's action will create a wave of regional bank buying as U.S. regulators redefine rules, said Richard Bove, an analyst for Rochdale Securities in Lutz, Fla.
"Now people are afraid someone is going to come along and do something before the regulations are changed," Bove said. "They don't want to be stuck missing the move."