Sino Biopharma was approved to close its $161 million all-cash acquisition of F-Star. The purchase didn't look like would happen after it was held up for nine months by the US government’s Committee on Foreign Investment in the United States.

Federal Reserve Chair Jerome Powell's latest comments are dragging down sentiment on Wall Street.

The major indexes are lower midday, with the S&P 500 Index just below breakeven and on track for its fifth-straight daily loss.

The major indexes are trying to claw back from this morning's fall, prompted by a higher-than-anticipated producer price index (PPI) for November.

Insilico Medicine signed a six-drug research collaboration with Sanofi that could be worth up to $1.2 billion. Insilico will receive up to $21.5 million in upfront and target nomination fees for each of the six targets.