Shares in Research In Motion spiked dramatically Thursday after days of steady gains, but analysts were still guarded about the potential success of the BlackBerry maker's new operating system.

On a day when the U.S. markets were closed, shares in Research In Motion surged 17.3 per cent to close at $12, up $1.77, its best performance in months on the Toronto Stock Exchange.

Telecom analyst Troy Crandall predicted, however, that the BlackBerry 10 operating system has only a small probability of successfully taking consumers away from Apple and Android devices when it's released in early 2013.

"It's not that we're super hopeful that this is going to work out," said Crandall, of MacDougall, MacDougall & MacTier.

"There is hope being built in that there's a chance it could work out."

RIM's new BlackBerry 10 operating system — which will be unveiled at a Jan. 30 event along with its new line of smartphones — is widely considered a make or break product launch for the Waterloo, Ont., smartphone maker.

Crandall said he doesn't consider it normal that shares in Research In Motion (TSX:RIM) surged 17 per cent in a single day.

"Stocks should not have this type of volatility unless there's something extraordinary going on below the surface," he said.

"I think that's really what you're getting and a lot of that is coming from the short selling and it's magnified by the fact that the U.S. markets are closed."

Investors could be in for a "nasty little surprise" on Friday, when RIM shares will likely go up on New York's NASDAQ exchange, he said. More RIM shares are traded on the NASDAQ, and it's rare for a single stock to rise by 17 per cent on that exchange, Crandall said.

A more modest gain on the NASDAQ will likely pull down the price in Toronto, he added.

He said 95.3 million, or just more than 18 per cent, of RIM's 524 million outstanding shares are held by short sellers, who have essentially bet against RIM and lose money when the company's stock goes up.

"I think a lot of the short sellers are starting to get scared or they're actually just basically cancelling out their position, which means they have to buy it back which adds further upward pressure to the stock."

National Bank Financial analyst Kris Thompson also alluded to short selling. He increased his price target for the BlackBerry maker to US$15 from US$12.

"We think there is more money to be made ahead of the 2013 launch of BB10," Thompson said in a research note.

"Let's reiterate our short-term investment thesis. Buy the stock ahead of the BB10 product launch when we expect shipment estimates to increase, especially from U.S. brokers where a break in negativity could lead to short covering and ongoing stock momentum," Thompson said.

Thompson also noted that RIM's new management team is maintaining the BlackBerry smartphone subscriber base, managing costs and cash, and seemingly readying a February 2013 BB10 global product release, a month earlier than expected.

Thompson said an earlier launch should be beneficial to Research In Motion.

"The shipments boost reflects about one more month of BB10 product availability, plus a little extra for the positive sentiment building in the industry from our discussions."

Thompson said he has increased his estimate of BlackBerry shipments for fiscal 2014 to 35.5 million from 31.6 million, reflecting 4.5 per cent global market share, up from four per cent.

He said certification of the new BlackBerrys by wireless carriers is the key risk to his prediction and estimate of BlackBerry shipments. Carrier certification, which tests the new devices, can take time.

On Wednesday, shares in Research In Motion gained almost five per cent on the TSX even though it was reported that the U.S. National Transportation Safety Board had dropped the BlackBerry maker in favour of Apple's iPhone 5.

Earlier this week, a prominent tech analyst gave RIM's new operating system a small but improved chance of success.

Analyst Peter Misek of New York-based Jeffries & Company said Tuesday that he's still giving the BlackBerry 10 operating system only a 20 per cent to 30 per cent probability of success.

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  • BlackBerry 10 First Look

    In email, when you select a message, it swoops in from the side.

  • BlackBerry 10 Preview

    A look at the "Glance" view on attachments in email.

  • BlackBerry 10 Preview

    A look at the new touchscreen keyboard, with predictions of what word you are going to type next. Hold down the letter and swipe up briefly to choose that word.

  • BlackBerry 10 Preview

    Another look at the predictive keyboard.

  • BlackBerry 10 Preview

    The phone call screen. Swipe up to dismiss, down to answer.

  • BlackBerry 10 Preview

    The phone call screen.

Loading Slideshow...
  • Blackberry PlayBook Flops, Prices Slashed

    The PlayBook tablet, which was the BlackBerry maker's answer to the iPad, went on sale in April 2011. Since then, <a href="" target="_hplink">RIM has lost $485 million</a> on unsold units. At the beginning of January, <a href="" target="_hplink">RIM slashed the price of all models</a> of its tablet to $299. The special pricing will last until February 4. PlayBooks, which come in 16, 32 and 64 gigabyte models, typically retail for $499, $599 and $699, respectively, <a href="$299-for-all-models/" target="_hplink">according to CNET</a>. In November, RIM temporarily <a href="" target="_hplink">slashed the price</a> of the 16GB version of the tablet to $199 at certain retail locations.

  • Network Outages

    In October, BlackBerry <a href="" target="_hplink">suffered an outage that affected</a> many of its then 70-million worldwide users, leaving some of its customers in Asia, Europe, Latin American and Africa without service for as many as three days. Some users in the U.S. were affected, but not for as long a period.

  • Drunk Execs Disrupt International Flight

    In December, two RIM executives were fired after a flight they were on was forced to be diverted because the pair's "drunken rowdiness," <a href="" target="_hplink">the AP reports</a>.

  • BlackBerry 10 Platform Delayed

    Research in Motion announced in December 2011 that its highly anticipated BlackBerry 10 platform won't be available until the end of 2012. <a href="" target="_hplink">According to the AP</a>, the company claims the holdup is because the chipset needed for the phones running the platform won't be available until the middle of this year.

  • Stock Slides In 2011

    In 2011, <a href="" target="_hplink">RIM's stock</a> dropped <a href="" target="_hplink">a massive 75 percent</a>.

  • Falling U.S. Market Share

    In less than a year, RIM's share of the U.S. smartphone market <a href="" target="_hplink">dropped by almost 50 percent</a>, from <a href="" target="_hplink">30.4 percent</a> in January 2011 to <a href="" target="_hplink">16.6 percent</a> in November 2011. In 2009, <a href="" target="_hplink">RIM controlled 44 percent</a> of the US smartphone market. (Pictured above is the HTC Desire HD Android, which runs on Google's much more popular Android platform.)

  • Investors Urge Company Sell Itself

    A nearly 75 percent drop in stock price in 2011 did not please investors. At the end of 2011, Jaguar Financial Corp, <a href="" target="_hplink">one of the largest investors</a> in RIM, called "for substantial corporate governance change and for a sale of RIM, whether as a whole or as separate parts." Vic Alboini, the chief executive of Jaguar Financial, <a href="" target="_hplink">told the BBC earlier this month</a> that RIM has "lost it." "The party is over, we believe, in terms of trying to design that cool, tech savvy smartphone," he said. "Microsoft has over $50 billion in cash, RIM has $1.5 billion. There is no way they'll be able to compete."

  • Exploding BlackBerry

    The family of 11-year-old Kian McCreath of Coventry, U.K., gave RIM some of its worst publicity in 2012, telling the media the boy was burned and left with permanent scarring when his BlackBerry Curve 9320 exploded. Although cell phones that are left to charge too long are known to explode, for RIM the news represented a horrible publicity disaster that came just weeks ahead of the launch of its BlackBerry 10.