Mark to market
Risk & psychologyAlso called: Marked to market, Marking to market, MTM
Restating a holding at the price it would fetch today rather than at the price that was paid for it.
In plain terms
A listed holding is marked constantly whether you look or not; a plot, a policy or an unlisted stake is never marked at all. The second kind is not steadier than the first, only unobserved — no red day is not the same thing as no fall.