Goldman Sachs expects "rising uncertainty" to affect the markets in the second half of 2016. The investment firm expects the S&P 500 to be "range-bound" for the remainder of 2016, with the index closing out the year at 2100.

"The fallout from Brexit is just one of several headwinds to US equity returns in the next few months," Goldman analyst David Kostin wrote in the July 5 note. "Other risks include the upcoming US presidential election, unstable growth and policy in China, and a deceleration in corporate buybacks, which represent the largest source of demand for US equities."

Goldman Sachs says investors should be overweight the following defensive sectors: consumer discretionary, which is leveraged to the U.S consumer, the largest and healthiest component of the U.S. economy; health care, which combines defensive characteristics with prospects for strong earnings growth and margin expansion; and telecom services, which offers high dividend yield, low valuations and a defensive profile that is appealing in a sluggish growth environment.

Goldman Sachs is underweight energy and materials sectors as well as industrials. The firm is neutral on information technology, consumer staples, financial services and utilities and real estate.

Goldman warns, though, to balance those defensive sector stocks with "reasonable valuations and prospects for EPS growth," the note said.

Within the consumer, health care and telecom sectors, here are the 14 S&P 500 stocks that Goldman Sachs rates buy and includes on its Americas Conviction List.