Well, Stoneridge does have a remedy, and that is the right to sue the perpetrator of the fraud -- Charter. Even class actions against actual fraudsters are of dubious merit, because they merely transfer wealth from one set of shareholders to another, neither of whom are guilty parties. The lawyers bringing the suit are the only net winners in almost every case, since over time an investor is as likely to be a payor as a recipient of such claims. But a class action against companies in which the "class" never even owned any shares is at an even further remove from any claim to justice. It is wealth redistribution, pure and simple.
Yesterday's early stories on the case described the ruling as a setback for "investors," which says a lot about the sympathies or ignorance of the press. Investors were fortunate that at least five Justices know the difference between genuine fraud and legal opportunism.