1. people who buy and sell stocks, commodities, or other assets hoping to profit from price changes, often taking significant risks
Usage: finance; economics
2. people who form theories or ideas about something without having complete knowledge or evidence

Examples

• Real estate speculators bought properties hoping prices would rise quickly.
• Currency speculators made millions during the market volatility.
• The stock market crash wiped out many amateur speculators.
• Oil speculators drove up gas prices through their trading activities.
• Financial speculators often take risks that conservative investors avoid.
• Many speculators about the missing plane’s fate proved to be wrong.
• Political speculators offered various theories about the election outcome.