Barclays suspends sales of two products linked to oil, volatility

British bank Barclays (BARC.L) said on Monday it had suspended the sales and issuance of two exchange-traded notes (ETNs) with combined assets of about $1 billion – one linked to crude oil and another to a gauge of market volatility – due to capacity constraints, in a move that some investors said could spur big price swings in the products.