Alphabet's fourth-quarter earnings day is here, with numbers expected to be released after the markets close Tuesday. This will be followed by an earnings call at roughly 4:30 p.m. ET. The stock has been riding high over the past month as investors grew bullish over Google's AI investment.

Google is expanding what Gemini is capable of doing from your phone’s lock screen. The new AI update will allow Android device users to quickly access Gemini extensions alongside the AI’s regular assistance without needing to unlock their phone once they’ve enabled the feature.

Alphabet will face investor scrutiny over its massive spending on AI when it reports earnings on Tuesday, as revenue growth at the Google parent likely slowed in the holiday quarter due to a slowdown in its advertising and cloud businesses.

Alphabet reports fourth-quarter earnings after Tuesday's closing bell. Investors will be focused on cloud momentum and AI traction, with shares of the Google parent company hovering just below record levels achieved last week.