The container ship index of ship brokers Harper Petersen & Co. The HARPEX Shipping Index tracks weekly container shipping rate changes in the time charter market for eight classes of all-container ships. The index was compiled in 2004, but by using a database of 10,000 records, can be calculated retrospectively back to 1986.
The HARPEX index is considered a suitable indicator of global economic fleet shipping activity since it tracks changes in freight rates for container ships over broad categories. This index is slightly different than the better-known Baltic Dry Index that tracks freight costs for dry bulk ships that usually carry bulk cargoes and raw materials such as coal, ore and grain.