Microsoft, Nvidia, Oracle, Meta, Amazon and Alphabet all saw their shares fall in the week up to the market close on Thursday.

Alexa Plus is aiming higher with a new superhero ad and a US-wide launch, including a free version for any app user.

The immediate spark for the Friday sell-off was the Amazon fourth-quarter earnings report. The e-commerce giant projected that its capital expenditures would reach $200 billion in 2026. CNBC reported that Amazon's Capex figure was $50 billion higher than expected, and the stock market reacted accordingly.

In 2026, Amazon plans to spend $200 billion in capex. Google is just behind at $175 billion to $185 billion. It's a lot of money!

The upgraded assistant is free for Prime members, while others need to pay $19.99 a month.

The AI chatbots will all have Super Bowl ads, underscoring the tech's explosive growth, and the seemingly unkillable influence of live TV.

Amazon opens Alexa+ to everyone in the U.S. The AI feature is free for Prime members across devices, and free for everyone on mobile and web.