BDI – Baltic Dry Index The Baltic Dry Index (BDI) is a shipping and trade index created by the London-based Baltic Exchange that measures change in the cost of transporting various raw materials. The exchange directly contacts shipping brokers to assess price levels for a given route, a product to transport and time to delivery, or speed. The index consists of the Capesize index (BCI), Panamax index (BPI) and Supramax index (BSI), all created by Baltic Exchange. BDI – Week 48 The overall bulker earnings had a good week, fueled by the rebound in Capesize earnings Monday and Tuesday. The.