Telsa shares fell after Elon Musk unveiled the Optimus robot. 

On Sept. 30  Telsa's CEO Elon Musk Unveiled a prototype of a humanoid robot

For approximately one minute, Tesla's Optimus robot waved at the crowd, gestured with its hands, and walked stiffly on stage.

As the Nasdaq is up 2% today, Tesla's stock is down 8%.

Tesla's share price has dropped significantly since the last market close on Friday, and the drop is one of its biggest of the year.

On Monday, Tesla opened up its Q3 delivery and production results.

And it fell short of expectations, though it was caused by 20,000 vehicles being shipped to customers. 

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