The Supreme Court’s decision leaves unanswered many difficult questions facing fiduciaries.

A recent court case provides some potentially valuable guidance into ways plan fiduciaries can approach fiduciary litigation. Most importantly, the case could force plaintiffs to focus on truly comparable situations in alleging that a plan’s actions were imprudent--this would limit plaintiffs’ ability to use, as benchmarks of prudent behavior, general industry data or different categories of investments (such as comparing index funds to actively managed funds).

Plaintiffs in the lawsuit against the NYU retirement plans have filed an amended complaint. This new complaint challenges the use, by the plans’ recordkeeper, of participant confidential financial data and the recordkeeper’s cross-selling of non-plan financial products to plan participants.

Two recent cases (Acosta v. Macy’s, Inc. and Erwood v. Life Ins. Company of North America) serve as reminders of how easy it is for plan administrative practices to diverge from plan documents. The cases also illustrate the risks of allowing this to happen.