China's regulatory regimes are increasing risks for international investors.
The ETF has around $1.2 billion in total assets and tracks shares trading in Riyadh.
The country is second in a global ranking showing asset increases as it joins emerging-market indexes this year.
The crisis triggered by the killing of Jamal Khashoggi is hurting Saudi plans to attract and retain investors.
The iShares MSCI Saudi Arabia ETF has returned 17 percent year-to-date.
This fund’s 2016 return beat the MSCI Frontier Emerging Market Index by eight times.