Initially, when electric-car maker Tesla ( TSLA 3.45%) released its fourth-quarter results, the stock popped. But shortly after the market opened on Thursday, the stock's return for the day turned negative. This has added to the stock's weakness in recent weeks. As of this writing, the stock is down more than 11% over the past month.

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Waymo robotaxi is closing the gap on pricing and wait times next to Uber and Lyft — key metrics riders factor in when choosing a ride, a study found.