The move marks a 14% increase on the start of the year and sees the web giant become the first tech company to pass the $800 (£522) mark.
Only Berkshire Hathaway's Class A shares, Seaboard, and NVR have stock priced higher, according to the Wall Street Journal.
The news comes in the wake of rumours that Google is planning to open a line of brick and mortar stores to sell its products on the high street.
The search engine firm is said to have made tentative plans to open stores in major metropolitan areas across the US, but it is unknown whether branches could spring up in other territories such as the UK.
Last month, Google posted strong fourth-quarter earnings, with the company reaching $50 billion in annual revenue for the first time.