'Twitter' Hedge Fund Has Positive Returns in Early Market Turmoil

``London-based hedge fund Derwent Capital Markets, dubbed "The Twitter Fund" because it uses tweets to help it predict market activity, turned in positive returns in its first official month of trading... the fund... gained 1.57 percent net of fees in July, according to an investor letter obtained by CNBC--outperforming both the S&P (which lost more than 2 percent in July) and the broader hedge fund industry, which was up 0.76 percent, according to data from Hedge Fund Research. ''