** Shares of petrochemicals manufacturer LyondellBasell LYB.N down 2.5% at $57.75 premarket
** LYB announces a $500 million cost-saving plan in response to macroeconomic volatility
** Company misses profit estimates, hurt by weak performance at its largest segment and low demand in Europe and China
** Posts Q1 adjusted profit of 33 cents vs estimate of 43 cents
** As of last close, shares were down 20.22% YTD
(Reporting by Katha Kalia in Bengaluru)
((Katha.Kalia@thomsonreuters.com))