Stephan's Thursday Picks

• Target shares sink more than 20%, after company says higher costs, inventory woes hit profit (CNBC)
• Walmart profits drop, dragged down by higher costs for food and fuel (NYT)
• The baby formula shortage has birthed a shadowy online marketplace (MIT Technology Review)
• Why Chinese sellers are quitting Amazon (Rest of World)
• New Zealand challenges Canada over dairy imports (Globe and Mail)