Lawrence G. McMillan is president of McMillan Analysis, a registered investment and commodity trading advisor. McMillan may hold positions in securities recommended in this report, both personally and in client accounts. He is an experienced trader and money manager and is the author of “Options as a Strategic Investment.” www.optionstrategist.com.

NEW YORK (Reuters) -Investors are bracing for volatility as Federal Reserve Chair Jerome Powell walks a fine line between curbing inflation and supporting the labor market, with thin August trading poised to magnify any market moves from his Jackson Hole speech on Friday.

Britain's main stock indexes declined on Thursday, dragged by losses in consumer-related shares, while global investors turned their attention to the U.S. Federal Reserve's annual symposium in Jackson Hole.