BlackBerry revival rewards Watsa's faith with US$1.2B gain Michael Bellusci, Bloomberg News VIDEO SIGN OUT Day traders have pushed BlackBerry Ltd.âs share price to levels not seen in more than nine years. Theyâve also given a jolt to a Canadian investment company that got crushed in last springâs market crash. BlackBerry soared as much as 52 per cent Wednesday in New York after a brief trading halt. The stock reached its highest level since 2011, and is up about 300 per cent this year. That is repaying the patience of Prem Watsa and his Fairfax Financial Holdings Ltd., which owns 8.3 per cent of the software firmâs shares, according to data compiled by Bloomberg.