Answer:
lack of diversification in the client's account
Explanation:
As a brokerage firm, your immediate concern in this situation should be the lack of diversification in the client's account. Â This is an incredibly large amount of money and the client has 100% of it invested in a single stock. Seeing since it is a blue-chip company, chances of it being delisted or its price falling sharply are very low but still possible. Still having all your money in a single asset is extremely risky, and every client should be diversified in many assets in order to reduce the portfolio's overall risk.