A "price rally" refers to a situation in which the price of something, such as a stock, commodity, or currency, increases rapidly and significantly over a short period of time. Full definition
How come bitcoin price rallied hard in 2017 while it hasn't made any improvement over the years? (ccinews.net)
While there has been a significant price rally in bitcoin this year — more than $ 17,000 — the digital currency has also shown considerable volatility. (bitcoinafrica.io)
This was subsequently reflected in a sustained share price rally since 2009. (wexboy.wordpress.com)