"To sum up next week in one word: bumble," David Buik, marketing director at Cantor Index, told CNBC.com, adding that the strong gains seen in equity markets over the past weeks are likely to slow.

"We’ve come a long way and we can’t keep going north," said Buik, stating that "all of the markets are trading above the level of their own incompetence,” because of strong earnings and M&A froth.