The past versus the future was a key theme of this year’s Sohn London conference, an annual get-together for the biggest names in the global hedge-fund industry. Money managers’ investment calls ranged from shorting traditional media companies such as ProSiebenSat.1 Media SE to backing a maker of components for the next Tesla Inc. electric car. The ailing cinema industry was the target of a short recommendation, while there was support for Norwegian information-technology company Evry AS. Below are some of the long and short investment ideas raised at the event at the Marriott Hotel in London on Thursday.