"I think a deal like this couldn't have happened 3-6 months ago," Sachin Shah, a merger arbitrage strategist at Albert Fried & Co, told Reuters.
Also rising were shares of Chevron and those of Exxon Mobil, last up 1.9 percent and 1.6 percent respectively, helped by a reprieve in oil prices. Crude futures lifted after the US Energy Information Administration said US stockpiles dropped by 3.6 million barrels last week. Analysts had expected stockpiles to edge higher.
Shares of Yahoo dropped, last 3.5 percent weaker, after the company said it had suspended work on plans to spin off its stake in Alibaba Group Holding. Instead it might do a reverse spinoff, transferring Yahoo's assets and liabilities other than the Alibaba stake to a newly formed company.
"In addition to our efforts to increase value and diminish uncertainty for investors, the ultimate separation of our Alibaba stake will be important to our continued business transformation," Marissa Mayer, CEO of Yahoo, said in a statement. "In 2016, we will tighten our focus and prioritise investments to drive profitability and long-term growth. A separation from our Alibaba stake, via the reverse spin, will provide more transparency into the value of Yahoo's business."
The probability the US Federal Reserve will raise rates next week rose to 90 percent, from 70 percent previously, in the latest Reuters poll of more than 90 economists.
"To be sure, moving now appears more about getting the first hike out of the way and changing the conversation away from liftoff to the shallow path of hikes expected thereafter than it is about the current state of the economy demanding tighter policy," Ellen Zentner, economist at Morgan Stanley, wrote in a note, according to Reuters.
In Europe, the Stoxx 600 Index ended the session with a 0.4 percent decline from the previous close. The UK's FTSE 100 Index slipped 0.1 percent, while Germany's DAX Index retreated 0.8 percent, and France's CAC 40 Index dropped 1 percent.