Some Wall Street banks, worried that landlords of vacant and struggling office buildings won't be able to pay off their mortgages, have begun offloading their portfolios of commercial real estate loans hoping to cut their losses.

It's an early but telling sign of the broader distress brewing in the commercial real estate market, which is hurting from the twin punches of high interest rates, which make it harder to refinance loans, and low occupancy rates for office buildings - an outcome of the pandemic.