Ok so if they are cash-settled then negative prices don't even affect them. All they lost is trading losses which they would've incurred anyway if the trading platform allowed them to close the trade. Instant dismissal because there were no damages. Pure ambulance-chasing! You fight them hard, AMP, fight them hard!! Seek punitive damages! This is a typical example of frivolous litigation just for a quick buck.
Was reading through the complaint a bit more thoroughly, and this just reeks! "...AMP’s planned negligence could not have been foreseen by the Plaintiffs. AMP was alerted of the possibility of negative oil prices by the CME,..." It wasn't "planned" negligence. Here, let me reword it for the answer to the complaint... "...Plaintiffs' negligence could not have been foreseen by the Defendant. Plaintiffs were alerted of the possibility of negative oil prices by the CME,..." Know the instrument you are trading. Sign up for the alerts, and you won't be in the dark. It's not like they (the plaintiffs) could NOT have known this information without the assistance of AMP.