The AI trade has been fueling the stock market all year, but it's looked shakier recently. David Miller of Catalyst Funds says he's concerned top tech stocks are overextended. He sees growth opportunities in other areas, including precious metals. The debate still rages over whether AI is in a bubble, but most agree that the top stocks sure do look expensive. While some see the bubble bursting outright, others are eyeing a situation where the momentum slowly seeps out. The red-hot AI trade has be ...