The U.S. ETF industry is at a “crossroads,” and has seen an increasing number of Institutional clients use ETFs in the last year, according to a 2010 study by Greenwich Associates.
Half the assets invested in ETFs in the United States are held by Institutions according to recent industry estimates. Although most people think of ETFs as a retail product, institutional investors are finding that ETFs can be helpful tools as well.
Of the 70 U.S. plan sponsors and money managers using ETFs that were surveyed by Greenwich Associates, the primary uses of ETFs include:
These two primary ETF uses go hand-in-hand with the movement by many Institutions from active management to passive. As more Institutions move to passive investments unless an extraordinary case can be made for the alpha provided by an active manager, Institutions are looking for ways to augment their core portfolio construction. ETFs can be one such vehicle.

When utilizing ETFs, Institutions said they used them for both tactical and long-term purposes. Equity ETFs, both domestic U.S. and International, were a frequent means of tactically tilting portfolio allocations or investing excess cash into the marketplace.
Institutional investors expect their ETF usage to increase in the next three years:

A copy of the full Greenwich Associates study is available: “ETFs Gain Foothold in Institutional Market“