Research In Motion, maker of the BlackBerry smartphone, rose 8 per cent after a report that Samsung Electronics may be interested in buying the company.
RIM advanced to $17.47 at the close in New York. Samsung may be interested in buying RIM, and no deal has been made because Waterloo, Ontario-based RIM is asking too much, the blog BGR reported.
An acquisition of RIM, whose stock fell 75 per cent last year amid market-share losses, would give Samsung an operating system that would help it differentiate from competition as it seeks to stay ahead of Apple.
Samsung now makes phones based on Google's Android software and Microsoft's Windows Phone, operating systems also used by rivals such as HTC Corp.
"This has been speculated before, and it does have logic to it in the sense that Samsung has no viable high-end smartphone operating system, and increasingly reselling Android or Windows Phone is being viewed as a commodity business," said Tavis McCourt, a Morgan Keegan analyst in Nashville, Tennessee.