Seeking a bigger return on its capital as rules tighten, the bank wanted a larger share of wallet. One of the largest US commercial lenders is aggressively seeking more return—share of wallet—for the credit it provides corporates, prompting at least one borrower to say “enough” and downgrade the bank’s rank in its loan syndicate. That takeaway emerged at a recent NeuGroup meeting where members exchanged insights about syndicated loan market trends and discussed which banks are eager to extend credit…