Investors are demonstrating confidence in the world's biggest economy by pouring cash back into risky assets and out of government securities as the Federal Reserve slows stimulus.

Yesterday BlackRock Inc.'s $13.7 billion exchange-traded fund (ETF) that focuses on junk bonds reported its biggest daily deposit since October, helping boost the total volume flowing into the biggest high-yield debt ETFs by $2 billion in the past month, according to data compiled by Bloomberg. Investors funneled $1.9 billion yesterday into U.S. stocks, which have recovered from a 3.5 percent loss in January.

Even as tensions build between the West and Russia over Ukraine, ETF buyers are chasing equity returns and bigger yields on the bonds of the most-indebted U.S. companies rather than seeking refuge in higher-rated notes. They're also disregarding diverging signals on the strength of the nation's economy as the Fed curtails monthly bond purchases that have bolstered the market.