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The Jungle of the $2 Trillion ETF Market Gets Denser

  • Eaton Vance's non-transparent ETF began trading Friday
  • Tradeweb now offering private off-exchange ETF trading in U.S.
Corrected

The $2 trillion market for U.S. exchange-traded funds is growing more opaque even as regulators warn the asset class is already too complicated for some investors.

Eaton Vance Corp. began offering a new type of ETF on Friday -- called Eaton Vance Stock NextShares -- that only reveals its underlying assets monthly, rather than the daily disclosure that’s common in the rest of the industry. Soon, that lag will get longer, as other fund issuers plan ETFs that discuss holdings only every quarter.