Total global commodity assets under management fell to $317 billion in May 2014 from $322 billion in April 2014, Barclays Capital said on Thursday. The investment bank said in a research note on the sector that in the year to date, a net $9.6 billion has been withdrawn from commodity investments. The three-month inflow streak for Exchange-traded products reversed course in May, as paltry inflows turned into net outflows, although at a rate less than a fifth of that seen at the end of 2013, Barclays said.