The president-elect’s 114.75 million shares are worth about $5.3 billion based on premarket trading, up from $3.9 billion when trading ended on Election Day. Of course, those are only paper gains and in practice it would be difficult for Trump to sell much of those shares without tanking the price.

Shares of former President Trump's social media company rose sharply Tuesday morning and then plunged suddenly in the afternoon in a volatile session as investors await election results. Why it matters: Trump Media & Technology Group,