What Purpose Did UWTI/DWTI Serve?

Thursday is the final trading day for two popular crude oil trading instruments: VelocityShares 3X Long Crude ETN linked to the S&P GSCI Crude Oil Index Excess Return UWTI and VelocityShares 3X Inverse Crude ETN linked to the S&P GSCI Crude Oil Index Excess Return DWTI. At the closing bell, Credit Suisse will no longer…