Gold prices have been struggling over the past coupe of months as equities have picked up steam and set their sights on historic highs. As such, many investors have moved out of gold and into equities, looking to cash in on the currently bull market. This trend can be easily demonstrated by the SPDR Gold Trust (GLD), which holds physical gold bullion. The fund has lost more than $4.7 billion in assets in 2013, though it still remains the second largest ETF in the world [for more gold news and analysis subscribe to our free newsletter].