Fisker (NYSE:FSR) stock is plunging lower after the electric vehicle (EV) company reported its preliminary fourth-quarter earnings and warned of uncertainty in the future.On Thursday, Fisker warned that there was “substantial doubt” about its ability to continue as a going concern once it submits all of its filings for 2023. The company added that it would need to raise either debt or equity because Fisker’s current level of capital is not enough to support it over the next 12 months. Fisker also noted that ...