Naomi Buchanan

A screen displays a quote from Meta CEO Mark Zuckerberg at an event. Alain Jocard / AFP / Getty Images

Microsoft introduced the Phi-3 Mini, a small language model that fils in a smartphone as the company expands its small AI system offerings.

Tesla shares surged in after-hours trading Tuesday after the electric vehicle maker announced it would accelerate production of new vehicles.

Analysts noted possible buyers for TikTok, how the app may be sold, and likely legal challenges, as a new law would force a sale or ban of the app in the U.S.

Meta shares tumbled in after-hours trading Wednesday after the company provided weak guidance despite an earnings beat.

Some analysts upgraded their ratings while others lowered their price targets after Tesla's earnings miss.

Microsoft shares jumped in after-hours trading Thursday after the company announced earnings that beat analysts' estimates driven by cloud revenue. The company's revenue was $61.9 billion, representing 17% year-over-year, while net income grew 20% from last year to $21.9 billion.

Meta shares tumbled after the tech giant said it would increase spending to invest in artificial intelligence (AI), though analysts say it could help position the company as an AI leader in the long term.

Key Takeaways Shares of Microsoft-backed Rubrik jumped more than 15% to $37 in the cybersecurity company's first day of trading on the New York Stock Exchange Thursday under the ticker "RBRK." The company had priced its shares at $32 apiece in its initial public offering (IPO), above its expected range of $28 to $31. Rubrik offers secure data for enterprise customers across cloud and Software as a Service (SaaS) applications powered by machine learning (ML) and artificial intelligence (AI).

AI was in focus as Meta Platforms, Google-parent Alphabet, and Microsoft reported earnings this week, but investors weren’t easily impressed despite better-than-expected earnings posted by all three tech giants.