Deutsche Bank Global CIO Christian Nolting says he advises clients to expect further volatility in the equity and bond markets. He adds that there are opportunities to buy stocks if the S&P 500 index is below 5,000 levels. "We will buy the dip in the market if it is closer to recessionary levels," Nolting tells Bloomberg Television. There is "still some potential growth rate in the US and that's something which is still interesting for investors," he notes.