Google stock hit a record high of $750.04 on Monday, before closing at $749.38.
CNN Money reported this tops its previous record high of $747.24 in November 2007.
The technology company continues to dominate internet search while making gains with Android phones, CNN reported. Research firm IDC reported Google's Android "had gained a record 68 percent share of world's smartphone market during the second quarter."
CNET.com said the gains come as Citi analyst Mark Mahaney said the stock will continue to go up, "reportedly setting a price target at $850" a share.
Mahaney based his estimates on increased search advertising and an improvement at Motorola, which was recently acquired.
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