Stephan's Wednesday Picks

• Roger Martin: Segmentation & strategy (Medium)
• The $9 bottle of Trader Joe's sunscreen that ignited a summer war (WSJ)
• How A.G. Lafley made culture change stick (Chief Executive)
• Walmart 'train wreck' profit warning sends shares down 10% (Reuters)
• Gen Z made it big on Depop. Now they're graduating (NYT)