Giant Greek shipowner Star Bulk Carriers is betting on a continued bulker "upcycle" due to the lack of newbuilding orders.

US investment bank Jefferies said the New York-listed company's executives revealed during client meetings that the current boom is different from the one 20 years ago spurred by China joining the World Trade Organization and vessel undersupply.

Star Bulk bosses said the next cycle should be driven by a lack of new vessel ordering due to regulatory uncertainty and rising newbuilding costs.