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Us treasury secretary yellen: don't interfere with the proper supervision of bank capital, liquidity and risk taking to ensure the soundness of the banking system.Hang Seng Index futures closed down 0.28% at 19,965 points, with a low water level of 6 points.Barclays lowered the target price of MGM International Hotel Group from 50.00 to 46.00.

A few ETFs in the U.S. stock market closed up, with semiconductor ETFs rising by more than 2.5%. This week, biotechnology ETFs fell by more than 3.3%, while optional consumer ETFs rose by more than 1.1%. On Friday (December 13th), semiconductor ETFs closed up by 2.51%, global technology stock index ETFs rose by 0.87%, technology ETFs rose by 0.43%, and optional consumer ETFs rose by 0.4%.WTI crude oil futures closed up $1.27, or more than 1.81%, to $71.29/barrel, approaching the closing price of $71.96 on November 7, with a cumulative increase of more than 6.08% this week.According to people familiar with the matter, Verkada, a surveillance camera startup, negotiated to raise $200 million at a valuation of $4.5 billion, led by venture capital firm General Catalyst.

Johnson & Johnson shares rose 0.4%.Newman Mining fell 3%, testing a 61.8% Fibonacci retracement near $41.Broadcom closed up 24% and its market value increased by $206 billion in a single day.