Shares in Research In Motion have shot up more than six per cent in early trading, marking several days of trading volatility that has also seen analysts upgrade the stock.

RIM shares were up 70 cents, or 6.4 per cent, to $11.70 in trading on the Toronto Stock Exchange.
Another brokerage, this time New York-based Goldman Sachs, upgraded RIM (TSX:RIM) to buy from neutral based on the launch of the new BlackBerry 10 operating system on Jan. 30.
Goldman Sachs says it gives the Waterloo, Ont., smartphone maker a 30 per cent chance of success, given positive early reviews and wireless carrier support of the new operating system.

It also says it has increased its 12-month price target to US$16 from US$9.
RIM’s stock also got a boost recently when two Canadian analysts increased their price targets for the shares to $15 and $17, respectively, based on their view that the market had undervalued the company.