Are investors in for a happy Christmas?

History suggests that the rally is set to continue, according to Goldman Sachs. Its study of European markets (going back to 1974) shows that the average market performance in both December and January has been positive 70% of the time. The first and fourth quarters are typically strongest, supporting the 'sell in May' rule.

What's more, strong January to November performances point to a strong December. When the market has gained more than 20% in the first 11 months as in 2009 the average December return has been 3.6%. But don't take these seasonal patterns too seriously. Another one widely highlighted is the January effect, evident in the S&P 500 between 1940 and 2003 the first month sets the tone for the rest of the year, says Tom Stevenson in The Sunday Telegraph. That fell "flat on its face" this year the S&P tanked in January but has since rocketed.

Meanwhile, Goldman notes that the December/January strength pattern has been "almost non-existent" over the last decade. Selling in May and going away didn't work in 2009 either.

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The big picture: gold is the safest currency of all

Gold has now hit a new record in both dollar and sterling terms. It passed $1,170 and £700 an ounce respectively, thanks to the Russian central bank stocking up on gold to diversify its reserves.

So the bull run looks far from over. Investors and emerging-market central banks have become increasingly keen on gold, the oldest currency and ultimate store of value. Money printing by Western banks, desperate to stave off deflation, threatens to devalue their currencies and fuel inflation.

Gold, however, can't simply be reproduced at the touch of a button. It won't trade below $1,000 ever again, reckons analyst Marc Faber.

MoneyWeek is written by a team of experienced and award-winning journalists, plus expert columnists. As well as daily digital news and features, MoneyWeek also publishes a weekly magazine, covering investing and personal finance. From share tips, pensions, gold to practical investment tips - we provide a round-up to help you make money and keep it.