GoPro Shares Are Going Crazy Again

After gaining more than 30% in their debut Thursday, and another 14% on Friday, shares of the wearable camera company were up as much as 10% in morning trade on Monday.

At $39 per share, GoPro is worth more than $4.7 billion.

GoPro's revenue grew steadily from 2011 to 2013, hitting nearly $1 billion a year ago. In the first quarter of 2014, however, the company's revenue fell to $235 million from $255 million in the prior year period.

This chart shows GoPro's performance since its debut last Thursday, and shares are up more than 33% in just a few days.