Over the last three months, the S&P 500 (SPY) is up +7.85% while the CRB Commodities Index, a broad index that measures 19 different commodities, is up a mere +2.8%. The PowerShares DB US Dollar Index Bullish ETF (UUP) is down -1.04% during the same time period. The catalyst for the upside in stocks and downside in commodities? Growth. As growth continues to stabilize, we’ll continue to see commodity prices fall and stocks rise.