Fastly is up 5.4% to $7.04 on the day after its second-quarter results were released.
The stock has risen more than 20% in the past two years.
The company said it expects revenue to increase by 3.5% to 7.6 billion yuan ($89 million).
Shares are up 18% since the beginning of the year.
Shares have risen more 20% since March 31.
The company’s stock price has more than doubled in value since the start of the decade, when the stock was trading at less than $1.50 a share.