Fitbit is surging

Fitbit shares rallied as much as 14% on Friday morning, one day after its blockbuster IPO.

Shares climbed to as high as $33.25 in trading, after opening up 52% on Thursday.

The maker of fitness trackers pegged its IPO price at $20 per share. It initially had a range of $14 - $16, but raised the range to $17 - $19, as well as the number of shares outstanding, after investors showed strong demand.

At a stock price of $33 per share, Fitbit is valued at nearly $7 billion.

The stock is now up more than 60% from the IPO price.

Here's a chart showing the last two days of trading, and today's continued rally:

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