River & Mercantile's Alex O'Reilly has his highest weighting to the US relative to history as a result of low valuations in the country.
Threadneedle's Cormac Weldon has reduced his fund's allocation to banks after being hit by consolidation among cyclical stocks earlier this year.
Pimco, the manager of the world's largest bond fund, has been selling down treasuries as it expects a second round of debt purchases by the Federal Reserve to have limited impact.
Janus Capital has launched a US large-cap growth fund based on a mandate which has been in existence for American investors for 40 years.
On what looks likely to be a quiet day for UK corporate news, traders are focused on the US where September's non-farm payrolls numbers are due to be released this afternoon.
The SEC has charged two employees of Boston-based State Street with misleading investors over exposure to sub-prime debt.
The asset management division of US banking group Wells Fargo is making its US-domiciled emerging markets fund available to UK investors as a Luxembourg Sicav.