Fashion buyer Kamal Sumai is working closely with a key overseas supplier and is monitoring...

Fashion buyer Kamal Sumai is working closely with a key overseas supplier and is monitoring and forecasting cost volatility within the fabric market. Kamal has decided it is the right time to raise a purchase order with his supplier for a greater quantity of fabric than he currently needs. Kamal is attempting to avoid an imminent price increase. What is this tactic known as?