Five years ago, TCF Financial didn't make car loans. Now auto finance is 15 percent of the bank's portfolio.
Fueled by a national rise in car buying, the Wayzata company built a $2.6 billion book of auto loans from nothing.
The business has been a symbol of the firm's postrecession reinvention and an engine of growth. Now, amid turmoil in the auto finance market, it's also a source of concern for skittish analysts.
The worry is over the quality of TCF's auto borrowers, especially as other lenders have had to face the fact they have made too many car loans to subprime borrowers. Sales of cars and trucks plunged in March by 2.1 percent, and analysts worry that a peaking auto market could be trouble for lenders who have grown their auto portfolio quickly.
"I'm worried what's going to happen when the downturn comes," said Dan Werner, an analyst at Morningstar who covered TCF Financial until a month ago. "There's going to be some challenges."
Craig Dahl, chief executive of TCF, was confident in the last conference call with analysts, despite fielding five straight questions on the subject.
"This has been an extremely well-managed and a well-performing portfolio," Dahl said. "So we have that discipline, we think, in it today."
TCF, a $20.6 billion asset bank with almost 3,000 employees in Minnesota and a 92-year history in the Twin Cities, moved into auto lending in 2011 by acquiring a start-up called Gateway One, based in Anaheim, Calif., and run by veterans of the auto lending business.