This market will resolve based on Elon Musk's net worth as reported by Forbes and Bloomberg. I intend to meet the spirit of the following, but will use my best judgement to resolve, including replacing these sources with other financial media if I decide it's necessary:

"If both of these sources agree that Elon Musk has a net worth of greater than or equal to $1 trillion on any single date on or before Dec 31st, 2028, the market will resolve yes; otherwise it will resolve no. "

References for resolution:
https://www.forbes.com/profile/elon-musk/

https://www.bloomberg.com/billionaires/profiles/elon-r-musk/