On 21 February 2011, oil prices rose in response to the 2011 Libyan civil war and speculation regarding 11 March Saudi Arabian Day of Rage.[40] The Saudi Tadawul stock market index fell to a seven-month low on stability concerns.[199] During the week of 27 February, global stock prices fell as oil prices increased and silver reached a 30-year high price on stability concerns in the region.[200] Regional stock market indices also fell on concern for Saudi stability.[199]