speculative spirit; speculative mindset
Refers to a mindset or inclination toward speculation, especially in financial contexts, but can also apply to other areas where one takes risks for potential gain.
His speculative spirit led to great success in the stock market.
Let's curb our speculative mindset and aim for steady investments.
Compound of 投機 (speculation) and 心 (mind/spirit). The exact historical derivation is uncertain, but the word likely emerged in modern financial contexts.