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GSK PLC shares rallied 1.87% to GBP18.52 Monday, on what proved to be an all-around poor trading session for the stock market, with the FTSE 100 Index falling 0.28% to 10,720.30.

GSK PLC closed 18.87% short of its 52-week high of GBP22.82, which the company reached on February 18th.

Trading volume totaled 3.0 million, compared to the 50-day average of 8.1 million.

Data source: Dow Jones Market Data, FactSet