Shares of banks and other financial institutions fell slightly amid fears that instability in Hong Kong would persist.
Tensions in the financial hub escalated over the weekend after the police shot a protester.
Separately, The Wall Street Journal reported that Hong Kong's regulator fined UBS Group about $51 million and demanded about $25 million in customer compensation for allegedly overcharging and misleading wealthy clients.
UBS's crosstown rival Credit Suisse Group said it had appointed insider David Miller to head its investment banking and capital markets division, seeking to boost its deal-making business.
Goldman Sachs Group fell after a viral tweet accusing it of having inherent gender bias in the technology powering the Apple Card payment system triggered an investigation by a New York regulator.
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