which person would keep up with the news to help their clients decide which investments to buy and sell?

The person who would keep up with the news to help their clients decide which investments to buy and sell is a broker.

A broker’s job is to:

• Track financial news, company announcements, and market trends for clients.

• Use this information to suggest which stocks, bonds, or funds to buy or sell.
• Act as the middleperson executing trades on behalf of investors.

Roles like bank tellers or reporters may see financial news, but they are not primarily responsible for advising clients on investment decisions in the way a broker is.