Background:
https://en.m.wikipedia.org/wiki/Trillion-dollar_coin
Given the troubles Johnson went through to become speaker, many believe there will be upcoming fights over the budget, debt ceiling, and government shutdowns. President Trump can get around this by "minting the coin" (see above link - TL;DR, he has the authority to tell the mint to strike a platinum coin of arbitrary value to overcome limits).
Will President Trump ever mint the coin (or coins) during his administration? This resolves YES if/when two conditions are both fulfilled:
Such a platinum coin(s) is/are minted
Trump is president at the time (or was at the time the order to mint the coin was given)
In case Trump term extends further than January 19th 2029, this market also extends.