Investors poured nearly $8 billion into U.S.-listed ETFs last week, most of that in U.S. and international equities, conveying an expanding appetite for risk. Overall U.S.-listed ETF assets rose by nearly 1 percent from the prior five-day period to $1.423 trillion.

SPY celebrated its 20^th birthday by topping this week’s creations list, adding $1.43 billion over the week ending Thursday, according to data compiled by IndexUniverse. The Powershares QQQ Trust (NasdagGM: QQQ) brought in $321.85 million, while five Vanguard funds—VIG, VTI, VNQ, VOO and VGK—peppered the Top 10 Creations list as well.

Meanwhile, fixed-income strategies were markedly the least appealing to investors. The iShares iBoxx $ High Yield Corporate Bond (NYSEArca: HYG) topped the redemptions list with $367 million in outflows, followed closely by the J.P. Morgan USD Emerging Markets Bond fund (NYSEArca: EMB) in the No. 2 spot, shedding $312 million this past week.

The into-stocks-and-out-of-bonds flavor in the world of ETF flows was emblematic of financial markets and an economy that maybe—just maybe—is finally starting to normalize after a rather volatile five-year period following the market collapse in September 2008. To be sure, perils remains—not least of which is the unpredictable political situation in Washington, D.C., but a cautious optimism is coming to the fore.

Top 10 Creations (All ETFs)

Top 10 Redemptions (All ETFs)

ETF Weekly Daily Flows By Asset Class

Top 10 Volume Surprises, Funds >$50 mm AUM

Top 10 Weekly Performers, Excluding Leverage/Inverse Funds and <1,000 Shares Traded

Top 10 YTD Performers

Bottom 10 YTD Performers

Disclaimer: All data as of 6 a.m. Eastern time the date the article is published. Data is believed to be accurate; however, transient market data is often subject to subsequent revision and correction by the exchanges.