Goldman Sachs says this self-driving car software stock could fall 35%

Luminar Technologies shares are too expensive at current valuations and could fall 35%, Goldman Sachs said. Luminar shares outperformed this year as investors moved back into riskier assets. However, the analyst says Luminar shares now have downside after that run-up. Delaney's $5 price target means shares could fall 35% from Tuesday's close. Luminar shares were down more than 8% in Wednesday premarket trading.