US stocks plunged to lows last seen in 1987 tonight, amid speculation a trader entered a "b" for billion instead of an "m" for million when placing an order.
Felix Wintle has made some strong sector shifts in his Neptune US Opportunities fund over the past two weeks, after admitting he has been too bearish on the American economy.
Federal Reserve chairman Ben Bernanke has once again allayed fears of a double-dip recession saying the US is staging a "moderate economic recovery".
Euphoria over a joint EU-IMF rescue deal for Greece worth €45bn (£39.8bn) appears short-lived, after angry reactions in Germany and continued concerns among bond investors any bail-out merely delays the worst.
Historic decision is expected to improve the prospects for many US biotech and pharmaceutical companies
ProFunds Group has launched a range of single inverse ProShares ETFs in the US, providing exposure to China, US real estate and the US basic materials sector.