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slash Wall Street. Here's your Tn B Tech Minute for Tuesday, June 18th. I'm

Zoe Thomas for the Wall Street Journal. Chipmaker

and Vidia closed as the most valuable listed U.S. company for the first time.

Its shares ended the day up 3.5%, at a record high of $135.58, with the company reaching

a valuation of $3.34 trillion.

That put it ahead of Tech Giants, Microsoft, and Apple. The scramble among

tech giants to lead in AI development has created a chip buying spree, lifting

NVIDIA's revenue to unprecedented heights.

The Los Angeles Unified School District has voted to ban cell phones during the entire school

day, becoming the largest school system to take such a step.

The move by the Los Angeles School Board clears the way for school leaders to create a policy

on how to ban devices.

The ban would take effect by January. The board said the extent of the ban could vary by grade level.

And electric vehicle startup Fisker has filed for bankruptcy.

Fisker started delivering its first model, the Ocean SUV, last summer, just as the market for battery-powered vehicles was starting to cool.

Fisker sought a cheaper and faster entry into the auto industry by outsourcing manufacturing, but it struggled with

the complexities of running a publicly held company.

The filing marks the second time an automotive venture by car designer Henric Fisker has gone bust.

We'll be off tomorrow for the Juneteenth holiday and we'll be back on Thursday with the

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