A buying spree in ETFs tied to natural gas is spurring concern that the securities risk destabilizing a market that up until now has been the province of energy pros.
Hedge funds and other investors have piled into the exchange-traded funds, known by their tickers BOIL and UNG, seeking to profit off fluctuations in prices for the fuel used for cooking, heating and generating electricity. The funds’ combined net assets are now $2.1 billion, twice the level of just six months ago.
