SunPower also disclosed that it was discontinuing its SunVault battery product, which failed to grab sufficient market share against the likes of Tesla's Powerwall. According to a December restatement of their 10-K, the situation is dire: "Substantial doubt exists about our ability to continue as a going concern and if we are unable to continue our business, our common stock might have little or no value." Wall Street apparently has faith in the solar company's ability to recover. Its shares, which are down more than 90% from its early 2021 peak, still afford it a market capitalization of $630 million.