CHICAGO--(BUSINESS WIRE)--U.S. trust and processing banks may see a pickup in earnings when short-term interest rates rise, says Fitch Ratings. U.S. trust banks, including Bank of New York Mellon, State Street Corporation, Northern Trust Corporation, and Brown Brothers Harriman are highly sensitive to higher short-term rates given large and relatively short-duration securities portfolios. 'A pick-up in net interest income and lower fee waivers on money market funds would drop almost directly to