Why SunPower Stock Slumped on Thursday

Whenever a company delays a regulatory filing, particularly one involving quarterly or annual financial updates, some investors fear the worst. After all, such filings are a normal and expected aspect of the life of publicly traded businesses.This explains the nearly 2% sell-off in SunPower (SPWR -1.89%) shares on Thursday. The solar energy company admitted in a brief regulatory filing that it'll be late in filing its latest set of fundamentals.Annual report filing delayedAnyone hoping to learn in-depth how ...