Goldman, Deutsche Bank Wave Goodbye to Summer Calm in Markets

A “Goldilocks summer” is all but over, according to Goldman Sachs Group Inc., and mounting concern about the US economy is yanking markets from their seasonal slumber.

As they come back to their desks, investors will be confronted by tepid US data prints, concern about US trade tariffs and President Donald Trump’s latest broadsides against the Federal Reserve, according to strategists at Goldman and Deutsche Bank AG.

“It will be quite a difficult return,” said Christian Mueller-Glissmann, head of asset allocation research at Goldman, in an interview with Bloomberg TV. “I’m not sure that we can sustain ...