Goldman Sachs Group Inc. warned that the area is growing too risky for investors after the outperformance.

“Real Estate has outpaced the S&P 500 by 156 basis points year-to-date, which has hurt large-cap mutual fund returns given their underweight allocation to the sector,” Goldman Sachs analysts led by David Kostin One said in a note, according to Bloomberg.

SEE MORE: Popular Plays for REIT ETFs Ahead of Sector Reclassification

“Ari Wald, technical analyst at Oppenheimer, also believes that real estate’s golden times could be over soon. Looking at a long-term chart of the REIT-tracking ETF VNQ, Wald emphasizes that real estate’s high support of $87 still stands, especially as the 200-day moving average continues its rise,” according to CNBC.

In addition to VNQ, the SPDR Dow Jones REIT ETF (NYSEArca: RWR) and iShares Dow Jones US Real Estate Index Fund (NYSEArca: IYR) are among the most popular REIT ETF plays.

For more information on real estate investment trusts, visit our REITs category.

Vanguard REIT ETF