paper profit has no recorded synonym. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its one recorded opposite is paper loss.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
an unrealized gain on an investment calculated by subtracting the investor's cost from the current market price
Synonyms, antonyms and the broader and narrower relations for paper profit come from Princeton University’s WordNet. Full sources and licences.