Exchange traded funds and notes listed in the U.S. saw inflows of nearly $24 billion in October as assets under management in the fast-growing business climbed back above $1 trillion.

According to the National Stock Exchange, ETFs and ETNs held $1.081 trillion in assets at the end of October, a 15% jump year-over-year and a 11% gain month-over-month when assets totaled $973 billion in September.

ETPs saw net cash inflows of $23.9 billion in October, garnering $101.6 billion in total net cash inflows from the start of 2011. U.S. equity ETPs experienced the largest gains at almost $16 billion, which contrasts with the $3.9 billion lost in U.S. equity ETPs in September.

Meanwhile, commodity ETPs were the biggest losers in October, leaking $578 million in assets.

Total ETF and ETN trading volumes almost hit $2 trillion for the month, which also accounted for 34% of overall U.S. equity trading volumes in the market. U.S. equity ETPs showed the highest notional trading volume, with $1.532 trillion, followed by volumes in global and international equity ETPs, with $242.1 billion.

At the end of October, the number of U.S.-listed fund products totaled 1,359.

For more information on ETFs, visit our ETF performance reports category.

Max Chen contributed to this article.