U.S. stock futures were swinging on Wednesday following Tuesday’s advances. Futures of major benchmark indices were mixed.Investors were awaiting August’s crucial producer price inflation, slated for a release later today. This will be followed by the August consumer price inflation data to be released on Thursday morning.Stocks reached new record highs on Tuesday, driven by revised U.S. job figures that showed a slowing labor market. This data strengthened investor confidence that the Federal Reserve will ...