Chicago Fed Nat Activity Index improved but remains below estimates Malta Independent Tuesday, 20 August 2013, 14:53 Last update: about 14 years ago <a href='https://ads.independent.com.mt/www/delivery/ck.php?n=afef72b0&cb=150' target='_blank'><img data-src='https://ads.independent.com.mt/www/delivery/avw.php?zoneid=22&cb=150&n=afef72b0' border='0' alt='' /></a> The Chicago Fed Nat Activity index for July decreased by -0.15 points