"As a traditional investor, it doesn't fit any valuation system that makes any sense compared to any other stock," Ross Gerber said of Tesla.

Shares of electric carmaker Tesla (NASDAQ: TSLA) traded nearly 5% lower as of 11:24 a.m. ET today after analysts at JPMorgan Chase lowered their price target on the stock and maintained their sell rating.

Key Takeaways Tesla shares rose close to 4% Friday amid a broader market rebound, but posted losses for the eighth week in a row, with some Wall Street analysts expecting further declines.Wells Fargo and JPMorgan analysts said they expect the stock could lose roughly half its value again,