National Stock Exchange (NSX) released their monthly U.S.-listed exchange traded fund (ETF) and exchange traded note (ETN) report for the month ending October.

Assets totaled almost $493 billion at the end of October, a decrease of 17.6% from October 2007’s month-end assets of $598 billion. MarketWatch reports the net cash inflows for the month of October 2008 were $6.8 billion, bringing the total net cash flow for calendar year 2008 to over $109 billion.

ETF/ETN notional trading volume during October totaled a record $3.3 trillion, representing 38% of all U.S. equity trading volume, of 806 listed products. The total number of products is up from 627 one year ago.

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