Answer:
market maven
Step-by-step explanation:
Market maven -
The term is associated with the person, who has the complete knowledge of the goods and services and the market , is referred to as a market maven.
A market maven has a lot of connection with various people and is very well - versed on the current state of the market , and has some discreet information which a normal person can never get access to .
The very so famous market maven are - George Soros , John Bogle and Warren Buffett.
Hence , from the given scenario of the question,
The correct answer is market maven .