Tesla Bears Rev Engine on Falling Oil, China Skepticism

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Slumping oil prices have restored Tesla Motors Inc.’s status as a favorite among short sellers and bearish options traders.

Speculation that a 58-percent plunge in West Texas Intermediate crude since June and competition from General Motors Co. will hurt demand have pushed short sales to a one-year high. The difference in the cost of bearish options versus bullish ones has almost quadrupled from September, reaching the highest level since November 2012, data compiled by Bloomberg show.