While outflows from equity ETFs soared, the $3.6 billion redemptions from high yield bond ETF HYG this last few days is the largest ever - almost twice as big as the previous largest outflows (seen in May last year).

The last week saw the biggest outflows from the high-yield bond ETF (HYG) ever...

As Bloomberg reports, the withdrawals from equity and credit funds highlighted the lack of faith in the rally that helped stocks briefly erase their annual losses last month. Equity traders have remained on the sidelines, with volume down in recent weeks as investors sought safer assets such as gold.

The S&P 500 just suffered its biggest two-week retreat since February as signs of slowing growth in the world's largest economy mounted. Worldwide stock ETFs lost $12.6 billion in the four days through May 5, wiping out more than six weeks of inflows, as the MSCI All-Country World Index capped its worst week in three months.