The company had a very strong second quarter, and investors eagerly piled into its shares.Container logistics company Zim Integrated Shipping Services (ZIM -2.62%) continues to benefit from high demand for its services, and lately investors have been here for it. The company's stock was notching double-digit gains over the past few days, with a more than 11% rise in price week to date as of Friday early morning, according to data compiled by S&P Global Market Intelligence. An encouraging earnings report was ...