Port of Piraeus permanent navy base for the mighty Athenian fleet. However, in the late 4th century BC began a long period of decline for Piraeus; the harbours were only occasionally used for the Byzantine fleet and the city was mostly deserted throughout the Ottoman occupation of Greece. In 2002 PPA and the Greek government signed a concession agreement. The Greek government leased the port zone lands, buildings and facilities of Piraeus Port to PPA for 40 years. In 2008 the duration of the concession agreement was modified from 40 to 50 years. With this modification the lease is ending in 2052. Since
Piraeus Bank c.30k). As of March 2018, the Hellenic Financial Stability Fund holds 26% of outstanding common shares, while the remaining 74% is held by the private sector (legal entities and individuals). Piraeus Bank is a universal bank providing various banking services. Historically a bank supportive of SMEs it now also possesses particular know-how in the areas of agricultural banking, consumer and mortgage credit, green banking, capital markets, investment banking, leasing and electronic banking. Piraeus Bank and its subsidiaries form the Piraeus Bank Group. A group of shipowners in Piraeus founded "Banque du Pirée" (Piraeus Bank; BP) in 1916 to finance trade.