John Shapiro's investment firm Chieftain Capital recently filed an amended 13G with the SEC regarding its position in Tempur Sealy (TPX). Per the filing, Chieftain now owns 5.21% of the company with over 3.22 million shares. This is a decrease from the 3.55 million shares Chieftain owned at the end of the second quarter. The latest filing was required due to portfolio activity on September 10th. Chieftain has owned this stake since 2010 but has slowly been trimming the stake since the end of 2014. Read more:http://www.marketfolly.com/2015/09/chieftain-capital-trims-t...