I am searching for regarding fiduciary liability and imprudent investment decisions. Specifically, a one-fund dc plan has a "satisfactory" rate of return over its life or any certain long-term period, but for one year, the assets tanked.

Any help in pointing me towards citations about whether the plan's rate of return and investment policy can be looked at over time, or whether the one calendar year can be disassociated from the rest, would be appreciated.

there are hundreds of cases. They are located at 29 USC 1104(a)(1)(B). As a general rule a one year decline in the value of plan assets not an indication of imprudent investment, e.g., in Oct 87 the stock market had a one day decline of 22% and did not come back to the Oct 87 level for 16 months.

Thank you. I appreciate the help.