BlackBerry shares have tripled this year, including a more than 40% rally on Monday, on very little news.
The stock jumped 43.5%, to $20.15 on Monday, reaching the highest price in 10 years, though the gain later diminished to a bit more than 30%. At $20.15, the stock was up just over 200% year to date, giving the company a market capitalization of about $11 billion
The…
