ESMA is taking another look at closet tracker funds as part of its review of fund management fees.

European Union financial regulators will conduct a large-scale study of the cost and performance of mutual funds, a top regulator said on Tuesday.

Steven Maijoor, chair of the European Securities and Markets Authority (ESMA), told a conference in Paris that the regulators would look at both passive and active funds.

https://www.nytimes.com/reuters/2017/10/17/business/17reuters-eu-funds-regulations.html