I started building my retirement portfolio with an Euro Stoxx 50 ETF. To minimize the risk a bit I would like to buy another ETF (and have both 50-50 in my portfolio). Is buying a blue chip stocks ETF in another region (Asia) enough? Or could I stay in Europe but buy an ETF with EU country bonds?
How different has an ETF to be from the Stoxx 50 to be a viable candidate? There are key figures like Sharpe ration, Morningstar Rating or volatility. Doe they have to be different that the other ETF?