Zim Integrated Shipping Services (ZIM -1.50%) stock has been delivering more than cargo to its shareholders over the past few trading days. On positive developments in the China-U.S. trade dispute, investors piled into the stock, sending it to a more than 26% gain week to date as of early Thursday night, according to data compiled by S&P Global Market Intelligence.A move related to international relationsThe most powerful boost to Zim's stock came on Monday, when the U.S. and China agreed to mutually slash ...