Tesla Valuation Looks Unsustainable to Wall Street Analysts

Tesla Inc.’s price cuts this year show customers are no longer willing to pay a premium for its vehicles. That raises a key question on Wall Street: Does its lofty stock-market valuation make sense anymore?

The immediate verdict after the electric-vehicle maker reported earnings was, not so much. The shares sank 9.3% to $220.11 in New York on Thursday, wiping out more than $70 billion in value.

Tesla’s nearly $700 billion market cap still dwarfs that of its competitors, but profitability in Elon Musk’s core car-selling business plunged to the lowest in over four years in the third quarter. That squeezed margins to near what General Motors Co. and Ford Motor Co. generate.

Pricing tension is a broader issue facing Corporate America, with companies testing consumer spending fatigue. Some companies are weathering it better than others. Netflix Inc., for example, had a surge in subscribers that enabled the streaming-service provider to raise prices for a large swath of customers.

To justify Tesla’s stock price, investors have to believe it “can achieve very high volumes and high operating margins, akin to technology or software companies, not traditional auto companies,” said Sanford C. Bernstein analyst Toni Sacconaghi.

Tesla “is increasingly looking like a regular auto company,” he said.