(Reuters) - Nvidia was on the verge of overtaking Alphabet as Wall Street's third most valuable company on Tuesday as the dominant AI chipmaker ended the day with a market capitalization above Amazon's for the first time in two decades.

Nvidia's shares slipped 0.17%, leaving its stock market value at $1.78 trillion, eclipsing Amazon's $1.75 trillion value after the online shopping and cloud-computing heavyweight's stock declined 2.15%.