Stocks Prices Become Extremely Volatile And Erratic In Countries With A Depreciating Currency

"Stock price movements become extremely volatile and erratic in countries with a depreciating currency. In the long run, the depreciation of the currency will usually more than eliminate the gains in local currency terms. So, whereas in 2007 both the Dow Jones and the S&P 500 exceeded their previous highs reached in 2000 in US dollar terms, these indices failed to make new highs in Euro terms."