Shares in CB Richard Ellis Group Inc. dipped nearly 6 percent Monday after the world’s largest real estate broker was downgraded to “neutral” from “buy.”

Goldman Sach analyst Jonathan Habermann downgraded the stock as concern mounts on Wall Street regarding an impending drop in commercial real estate values. This marks the third downgrade of the El Segundo-based firm over the past week.

Shares dipped more than 14 percent last week after two separate analysts downgraded the company’s stock due to what they foresaw as impending drops in commercial real estate values.

Shares in CBRE were down 5.8 percent, or $1.49, to $24.01 in afternoon trading Monday on the New York Stock Exchange.