Kevin Green notes Monday's open as strong, pointing to the SPX's 6,400 level as one he continues to watch on the session. However, brace for volatility, as Kevin points to technicals signaling the "path to least resistance" is higher. Additionally, he notes a story he argues many investors aren't watching: the soybean trade. Kevin expects notable moves that can impact U.S. agriculture stocks and serve as an indicator to China tariff developments.