Sportswear retailer Lululemon Athletica delivered sales growth of 12% for the quarter to January 29, inline with analysts’ expectations and including 9% more locations. Yet, the stock dropped 18% due to comments from CEO Laurent Potdevin that 2017 has seen a “slow start”. Panjiva data shows seaborne imports of Lululemon-related products fell 20% in the past quarter and 69% in February alone. That may reflect supply chain factors rather than just demand. Yet, a more general slowdown in yoga clothing (17% lower in February) and specific lines like tank-tops (which dropped 24%) is a long...