Silver is getting more expensive to trade, but it could still hit $100. Here’s how.

Why silver could top $100 an ounce within weeks. - Getty Images/iStockphoto Trading-exchange operator CME Group made it more expensive in recent weeks for people to trade silver futures contracts. That doesn’t seem to bother investors, who have lifted prices up to their highest levels on record, with many setting their sights on the psychologically important $100-an-ounce mark. CME CME already raised its silver futures contract performance bond requirement, also known as margin, once in January after bu ...