Summary: June 19 (Bloomberg) -- Holdings in the SPDR Gold Trust, the world's largest exchange-traded product backed by bullion, fell below 1,000 metric tons for the first time in four years. Mark Keenan, an analyst at Societe Generale SA, says outflows from gold-backed ETFs will continue this year. Bloomberg Radio's Catherine Cowdery reports on Exchange Traded Funds. (Source: Bloomberg)
