A hawkish statement from the Federal Reserve has been perceived by markets as another step towards an interest rate rise, although it is unlikely to come before April 2015.
Guinness Asset Management chief executive Tim Guinness believes the price of Brent crude oil will fall to as low as $40 a barrel - and then rebound sharply.
The FTSE 100 has endured a volatile session as the impact of the falling oil price and Russian currency collapse continue to reverberate around global markets.
Russia has raised its interest rates to 17% to prevent further depreciation of the ruble, which has halved in value against the dollar this year.
Pick up almost any business publication or newspaper and you will read someone's deep thoughts about the oil price, plus a multitude of predictions about where it will go next.
The FTSE 100 has fallen a further 1.5% this morning, taking losses for the week to over 5%, as investors continue to fret over a plunging oil price and latest developments in the eurozone.
With developed economies flirting with deflation, central banks will likely regard the oil price slump as troublesome. M&G's Jim Leaviss explains how short-term deflation could turn to long-term growth boost.
James Henderson has added a small stake in Tesco to his Lowland investment trust, after shares plunged 15% following the supermarket's third profit warning in four months.
Negative sentiment towards Europe's economic prospects has caused valuations in many cases to become very attractive, says Barings' Nick Williams.
Star managers, body language, and the oil price panic