Summary: You have probably heard of 3-D printing. This hot topic is now mainstream. But do you know the biggest players in this sector?Today's Stocks & Topics: DLR - Digital Realty Trust Inc., George Soros, Philadelphia Fed, Higher Interest Rates Good for Stocks?, 401k, CD Rates, GDX - Market Vectors ETF Trust Market Vectors Gold Miners, CLR - Continental Resources Inc., NEM - Newmont Mining Corp., I-P-E Investments.
