In finance, a hidden asset is an asset that is not shown on a balance sheet. An example of such an asset is the US $15 billion that United Airlines' frequent flyer program, MileagePlus, was estimated to be worth when it filed for Chapter 11 bankruptcy.
In divorce cases, a hidden asset is a property that is hidden by one spouse from the other. It is more difficult to discover than to conceal.
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Hidden asset Wikipedia(Text) CC BY-SA