melt-upnoun.
The severe overheating of a market that causes prices to rise to unprecedented levels (cf. meltdown).
Example Citation:
"You hear more or less serious arguments these days that earnings don't count, that interest rates are irrelevant, that the macro backdrop is a distraction. Otherwise erudite observers use the phrase 'melt-up' in their analyses. Melt-up? It can't be a well thought-out market if it is represented by so unlikely an image."
—Jim Griffin, "Top Heavy," TheStreet.com, December 19, 1999
