Zhè zhǒng zhèngcè zhùzhǎng le tóujīzhě de huódòng.
This kind of policy encouraged speculators' activity.
Tips
usage
投机者 is almost always negative in Chinese — closer to English 'profiteer' or 'opportunist' than to a neutral 'trader.' For neutral financial speculation use 投资者 (tóuzīzhě, investor).
memory
投机 means 'speculate' or 'opportunistic' (literally 'throw at the chance'); -者 turns it into a person noun. 投机倒把 (tóujī dǎobǎ) is the related crime of 'profiteering' from the Mao era.
