On Wednesday, the Invesco S&P 500 Equal Weight ETF (RSP), which follows the S&P 500 Equal Weight Index (EWI), was flat. U.S. markets and stock exchange traded funds were higher on Wednesday after updated data on inflation was more or less in line with expectations but was still at its highest level in four decades. "The fact that the core rate came in just about in line with expectations suggests that we're beginning to see some sort of a decline going forward," Peter Cardillo, chief market economist at Spartan Capital Securities, told Reuters.