Federal Reserve

Bond manager criticises rate rise delay

Global concerns weighed on decision

Yellen faces tough decision

US markets also rise

Manager urges Fed to wait

No need for 'violent reaction'

Any decision on rates by the Federal Reserve this year could damage markets as the central bank's efforts have so far only resulted in lacklustre growth and 'bubble' asset prices, according to Jan Dehn, head of research at Ashmore.

VIX long positions at record high

EM economies most vulnerable

Economist says domestic data supportive