Refers to a person who engages in large-scale financial activities, such as investment, banking, or corporate finance. Often implies a professional or influential figure in the financial world.
He is a famous financier who invests in many companies.
That investor constantly analyzes market trends.
Compound of 金融 (finance) and 家 (person, specialist). The exact historical derivation is uncertain, but the word follows a common pattern for naming professionals in a field.