Global exchange-traded fund assets broke through the USD1trn milestone at the end of 2009, according to a report by BlackRock.

At the end of December 2009 the global ETF industry had 1,947 ETFs and 3,787 listings from 110 providers on 40 exchanges around the world.

Although there was significant growth in assets during 2009, just 100 ETFs out of 1,947 account for USD683.3bn or 66 per cent of the USD1trn total.

ETFs providing exposure to key portfolio building blocks account for approximately a quarter of assets.

There are 322 ETFs with assets below USD10m, while the top three providers account for 71.6 per cent of assets: iShares with 47.2 per cent, SSgA with 15.5 per cent and Vanguard with 8.9 per cent market share.

Additionally, there were 611 other exchange traded products with assets of USD150.79bn from 37 providers on 18 exchanges.

Combined, there were 2,558 products with 4,687 listings, assets of USD1,186.48bn from 133 providers on 43 exchanges around the world at the end of december 2009.

BlackRock expects ETF assets to grow by 20 to 30 per cent in 2010.