Jefferies analyst Ken Usdin downgraded Northern Trust (NTRS) to Hold from Buy and lowered his price target for the shares to $91 from $121. The sharp Q4 decline in market levels weighs on trust banks' revenue estimates, Usdin tells investors in a research note. He downgraded Northern Trust with his 2020 earnings estimate now 7% below consensus. Trust bank valuations remain below historical averages, but slower organic growth and "less macro help" are challenges, says the analyst. He also lowered his price target for Hold-rated BNY Mellon (BK) to $50 and Hold-rated State Street (STT) to $70.