Brian Griggs, head of portfolio strategy and solutions at Nuveen, says that investors have long had too much dependence on large-cap domestic stocks and an over-reliance on duration in fixed-income allocations, and he says that investors should address those pain points today to address macro-sensitivity caused by today's headlines. Using Nuveen's Nsights anaytical tool — a proprietary system that examines how portfolio changes impact future portfolio performance — Griggs says that investors want to address their portfolio problems now, including holding too much cash, to make portfolios better prepared to ride out the bumpy times ahead.