ISTANBUL
Alphabet's market cap increased by more than 3% on Monday, exceeding the $3 trillion threshold.
The share price of Alphabet, owner of Google, was at $248.06 as of 1510GMT, but it also saw the $252 level during the day.
During the last year, the price of an Alphabet share hovered between $140.53 and $252.41.
Alphabet was thus ranked fourth among the world's most valuable companies, behind Nvidia, Microsoft, and Apple.
The company's shares rose in early September after a federal court in the US ruled that it was not required to sell its internet browser, Chrome, as part of an antitrust lawsuit against Google.