Lawsuits targeting wealth management firms’ interest payments on clients’ uninvested cash continue to pile up, with Ameriprise Financial, LPL Financial, and UBS the latest targets.

Two new lawsuits filed last week against Ameriprise are seeking class-action status, damages, and injunctive relief, contending that the broker has an ongoing obligation to act in its clients’ best interests, but that it failed to do so by keeping clients’ cash in low-interest sweep accounts even as the Fed embarked on its rate-hiking campaign.