BlackBerry Stock Has Skyrocketed Nearly 100% in 6 Months: Is It Too Late to Buy?

Shares of tech company BlackBerry (BB -0.84%) have been falling in recent days, but it has been a tremendous stock to own in the past six months, nearly doubling in value over that stretch and hitting a new 52-week high along the way. There's growing excitement around the business, as it announced some promising results late last year, and that has helped fuel the stock's rally. BlackBerry, once known for being a top cellphone maker, stopped making its own phones in 2016 as it struggled in the market amid h ...