Custodial banks typically earn their fees based on a percentage of the value of the assets they’re holding for you. But do they have any obligation to confirm whether there are any assets there in the first place?

A Hartford jury is deliberating over that and other questions in a case brought by former customers of Bernard Madoff. Westport National Bank was custodian of the investors’ accounts. But, as it turns out, when the bank took over the accounts in 1999, no assets existed, and the bank didn’t bother to check.

The custodial issue is becoming ever-more important as investors increasingly put “alternative” investments such as hedge funds in their retirement accounts. Pricing those investments can be dicey, and you shouldn’t expect that your custodian is doing any analysis to ensure that the prices they show on your statements are realistic.

I attended several days of the trial against Westport National Bank in Federal court in Hartford in June. Here’s a story I wrote about it for The New York Times.