Stock fund outflow continued for a second month as investors pulled out a net $6.42 billion in July while the stock market fell. The pullout was more than triple June’s outflow of $2.03 billion, according to the Investment Company Institute. There were indications that the situation improved this month. Mutual funds that invest primarily in the U.S. disgorged $13.75 billion in July, the worst outflow since December 2012’s $26.28 billion.