Global ETFs saw record inflows during the first quarter as more investors tapped the low-cost financial products to participate in the rally that sent U.S. equity indices to new all-time highs.

ETFs listed around the world gathered more than $70 billion in the first quarter, up 7% from the year-ago period, the previous record, according to the Financial Times.

“More cash is coming off the sidelines and being put to work. Record inflows for ETFs reflect investors’ renewed confidence in the outlook for developed equity markets,” said Russ Koesterich, global chief investment strategist at BlackRock, which manages the iShares.

ETFs that invest in U.S. stocks brought in $37.3 billion during the first three months of 2013, jumping 80% from the same period last year.

Yet the largest ETF, SPDR S&P 500 (NYSEArca: SPY), experienced net outflows of $6 billion in the first quarter, according to IndexUniverse data. The massive fund still holds $130 billion of assets.

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