Investec Asset Management's Paul Carr believes sterling is the most undervalued major global currency.
The US dollar has sunk to a fresh 15-year low against the yen after the G20 nations pledged to avoid a currency war.
Whether the US dollar index looks set to post its fifth successive weekly decline in a row will depend on how the markets react to today's US CPI, retail sales figures, and Michigan consumer confidence numbers.
The pound has fallen to a five month low against the euro amid a rising claimant count and falling consumer confidence.
Michael Hasenstab, Franklin Templeton's co-director of international bonds, is shorting the yen on expectations it will weaken against the US dollar as the Japanese authorities prepare to print money.
The yen has hit a 15-year high against the US dollar against a backdrop of inaction by the Japanese Government.
BlackRock veteran Bob Doll predicts the US stock market could achieve annualised returns of 8% over the next decade.
Sterling hit a six-month high against the dollar today as poor US economic data continues to weigh on the currency.
The euro rocketed to a two-month high of $1.29 and sterling jumped two cents to almost $1.54 against the dollar after the Fed confessed the US economy may not recover for five or six years.
Investec Asset Management, which runs $5.3bn in active currency funds, has warned the dollar could face a sharp correction this year due to reluctance in the US to embrace fiscal tightening.