The iShares MSCI United Kingdom ETF (EWU) tracks the investment results of an index composed of U.K. equities. As such, any significant economic indicators from the U.K., such as labour productivity, can influence the ETF's performance. In this case, the matching of estimated productivity and the improvement from the prior period could be seen as a positive sign for the U.K. economy, potentially leading to a neutral to positive impact on EWU in the short term.