Shares of Merck, however, jumped, last up 6 per cent, on the company's progress in developing new drugs including for skin cancer and blood-clotting. The company also said it is exploring strategic options for its animal health and consumer care businesses.
"We're taking significant and decisive action to make Merck a more competitive company, better positioned to drive innovation and growth," Kenneth Frazier, chairman and chief executive officer of Merck, said in a statement. "We're pleased with the solid progress we have already made against each of our key areas of focus, and we are quickly moving ahead to build on this momentum to make Merck a leaner, more agile company focused on the best opportunities to create value and advance global health."
Shares of Juniper Networks also gained, last up 8.5 per cent. The company has been targeted by Elliott Management, a New York fund run by billionaire Paul Singer, which will seek cost cuts, stock buybacks and other changes, Bloomberg News reported, citing two people familiar with the matter. Elliott is seeking talks with management and the company's board.
In Europe, the Stoxx 600 Index added 0.2 per cent from the previous close. The UK's FTSE 100 and France's CAC 40 both gained 0.3 per cent, while Germany's DAX rose 0.4 per cent.
On commodities markets, nickel surged after Indonesia's ban on unprocessed ore exports took effect. London Metal Exchange nickel rose 4 per cent on Friday and added a further 1.4 per cent on Monday.
Nickel may rise further, but a break above US$15,000 a tonne-which has capped its trading band for the past six months-could be a sell signal, a Singapore-based metals trader told Reuters.