Omicron and market sell-off: don't be surprised if there's more turbulence to come

Until the Omicron variant hit the headlines, the signs were that 2021 was going to close with a stellar stock-market performance. Most markets have been on the rise since the beginning of the year, with the S&P500 up about 25% and the FTSE All Share index up by about 10%.

There had certainly been…

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