New York City remains home to roughly double the number of hedge-fund managers as London, but the two centres increasingly stand head and shoulders above the rest of the world.

ECONOMIST: Hedge funds

This is apparent in the way that investors have continued to move into gold as a hedge against another possible double dip in markets in the next months.

FORBES: Let's Talk About Correlation

Ever-innovative financiers have given hedge funds new tools to double up their bets.

ECONOMIST: The credit squeeze

This quote from the FT.com encapsulates the key reason why both Jack Weyland and Justin Uyehara have used TWM, a double inverse the Russell 2000 ETF to hedge their portfolios from time to time.

FORBES: Why TWM Makes A Good Hedge

While such funds were practically a license to print money in the 1980s and 1990s, investors have been slow to accept the fact that, as hedge funds go more mainstream, the days of double-digit returns with minimal risk are over.

FORBES: Borrowed Time?

Such double acts may find themselves less vulnerable to the reputational attacks that hedge funds often endured before the financial crisis.

ECONOMIST: Shareholder activism

Despite fears of a double-dip recession, industrial goods companies are the biggest overweight position for hedge funds.

FORBES: Corporations Are Buying European Stocks