Earlier this month, the U.S. exchange traded products hit a major milestone when combined assets uner management across exchange traded funds and notes topped $2 trillion.

“Through December 22nd, assets have increased 18% this year from $1.698 trillion to $2.007 trillion based on positive market performance and net new assets,” according London-based ETF research firm ETFGI. And through the first 11 months of 2014, U.S. ETFs added nearly $190 billion, more than almost $180 billion captured in all of 2013. [U.S. ETFs Hit $2 Trillion Milestone]

With the S&P 500 up 12.6% this year and flirting with record highs, it is not surprising that equity ETFs are leading asset gatherers.

“Domestic stock ETF assets saw the strongest gains. Their assets increased by $53.3 billion in November and $222.3 billion since November 2013. Meanwhile, the S&P 500 rose 2.75% in November,” reports Aparna Narayanan for Investor’s Business Daily.

The top three asset-gathering ETFs this year are all S&P 500 funds as the SPDR S&P 500 ETF (NYSEArca: SPY),Vanguard 500 Index (NYSEArca: VOO) and the iShares Core S&P 500 ETF (NYSEArca: IVV) have hauled in over $43.6 billion in new assets combined. 

As of Dec. 26, there was $311.1 billion allocated to sector ETFs with energy ETFs accounting for $44.7 billion of that total, according to Bloomberg. The Energy Select Sector SPDR (NYSEArca: XLE) is the only sector ETF among the top 10 ETFs for 2014 inflows.

However, investors have poured nearly $2.6 into the Consumer Staples Select Sector SPDR (NYSEArca: XLP) and over $3 billion into the Utilities Select Sector SPDR (NYSEArca: XLU) and Health Care Select Sector SPDR (NYSEArca: XLV) combined.