Google shares have topped $1,000 (£617) for the first time after the company reported better-than-expected earnings.
The company posted a 36% jump in net profits to $2.97bn for the July-to-September period.
Shares in the giant online search and ads company rose more than 13% to $1,006, and are now up 41% since the start of 2013.
Google’s revenues also beat forecasts with a 12% rise year-on-year.
“We are closing in on our goal of a beautiful, simple, and intuitive experience regardless of your device,” Google’s chief Larry Page said in a conference call with analysts.
Then, from 2007 the shares halved in value as doubts surfaced about whether the growth story could continue.
But, over the last four years, as Google has shown that it can be as big a force in mobile advertising as it has been on the desktop, confidence returned sending the shares ever higher.
And 18 months after Facebook floated, its story is looking rather similar.
Facebook shares, which halved in value in the months after its stock market listing, reached a new high today – and again it’s the social network’s proven ability to make money from mobile advertising which has restored confidence.
Two companies battling for the upper hand in a vast new industry – but right now investors are betting that both can deliver spectacular growth.
The strong earnings report also helped other online companies, with Facebook shares adding 4.4% to a new high of more than $55. Amazon rose 3.4%.
At $1,000 a share, Google’s market value is about $334bn, which is still well below Apple’s $461bn.
Google was floated in August 2004 at $85 a share, giving the company a market value at the time of $23bn.
The company reported its quarterly earnings on Thursday after US markets had closed.
Google said that paid-for clicks increased by a quarter during the July-to-September period, from a year earlier, the highest rate of growth in the past year.
This offset an 8% fall in average cost-per-click, the price advertisers pay Google when consumers click on their ads.
“We view solid paid clicks growth to be a good indicator of demand, driven by the continued shift to mobile,” JP Morgan analysts said in a note.