Click to get this free report SPDR-DJ IND AVG (DIA): ETF Research Reports NASDAQ-100 SHRS (QQQ): ETF Research Reports SPDR-SP 500 TR (SPY): ETF Research Reports To read this article on Zacks.com click here. The PPI is arguably the bigger determinant toward future economic inflation, concerns of which have led to the past two weeks of market turbulence. Pre-Markets in the Green Market index futures did not budge much from their positive sentiment following the release of PPI data, which analysts had drawn a trained eye toward.