Stefanos Kasselakis, a 35-year-old Greek ship investor who earned a small fortune through opportunistic bulker and tanker asset plays last year, has embarked on a political career with his home country’s main opposition party.

The formerly radical and now centre-left Syriza party held power in Greece between 2015 and 2019 but was trounced in two consecutive parliamentary elections since.

Its latest disastrous result in June sent the party in a tailspin, with former leader and then prime minister Alexis Tsipras quitting active politics and opening the field to a group of lesser-known hopefuls keen to replace him in a leadership election due next month.