A Tesla Inc.-inspired price war among electric vehicle makers in China is taking a toll on even the most resilient players, as evidenced by BYD Co.'s staggering $18 billion drop in the past month.
The U.S.-listed shares of the electric-vehicle maker backed by Warren Buffett have declined 14 percent since the start of February, underperforming Tesla's 9 percent advance. In comparison, a gauge of global EV makers fell 9 percent over the same period.
Traders are growing wary of BYD's prospects after the firm's dealers slashed prices of some models to boost sales. The change in sentiment underscores the wave of caution that's sweeping the industry following moves by Nio Inc. and XPeng Inc. to follow Tesla's lead in lowering prices as demand slows. Buffett's steady offloading of shares that's now topped the $500 million mark is also weighing on the stock.
"A gradual industry shift is underway as excessive price cuts can lead to buyers holding back, awaiting e…