speculator
noun [ C ]
FINANCE, STOCK MARKET uk/ˈspekjʊleɪtər/ us/-ɚ/a person who buys goods, property, money, etc. in the hope of selling them at a profit:
a currency/land/market speculator
We should not bail out lenders, real estate speculators, or those who made the reckless decision to buy a home they knew they could never afford.