Morgan Stanley chief U.S. equity strategist Adam Parker also argued for continued strength in the U.S. markets, pointing to a 12-month S&P 500 forecast of 2,125.

For broad U.S. equity exposure, investors can consider something like the Vanguard Total Stock Market ETF (NYSEArca: VTI) or focus on the S&P 500 with related ETFs like the the SPDR S&P 500 ETF (NYSEArca: SPY) and iShares Core S&P 500 ETF (NYSEArca: IVV). [Stock ETF Rally Could Find Help From Underperforming Active Funds]

Morgan Stanley’s chief international economist, Joachim Fels, believes we are set for one of the longest global economic expansions on record due to loose money, Bloomberg reports. The economist contends that weak global growth and inflation will allow central bankers to extend stimulus measures.

“Compared to earlier expansions, growth is decidedly sub-par and expected to remain so despite the projected pick-up, but then again this could help to make it one of the longest economic expansions on record,” Fels said. “The glass is half full.”

For more information on global markets, visit our global ETFs category.

Max Chen contributed to this article.