Mumbai: Bond yields are steepening – and biting bankers.Trading losses would mount, banks warned, unless the regulator eases its cap on the amount of bonds the lenders hold in the Held-To-Maturity (HTM) segment. That will encourage lenders buying government bonds in the weekly primary auctions, which remained partly unsold last Friday. A section of the market has already reached out to the central bank with the proposal, sources told ET.“An