Twitter, LinkedIn and Yelp each fell more than 20 per cent for the week in their biggest weekly percentage declines since their market debuts.

While Twitter was down 25.5 per cent for the week, LinkedIn declined 21.4 per cent for the week and Yelp also lost 21.4 per cent.

The declines follow this week's disappointing results and outlooks. "The big takeaway from this earnings season is that social media stocks are no longer a leading group," said Adam Sarhan, chief executive of Sarhan Capital in New York.

Global X Social Media ETF fell 1.4 per cent on Friday despite a rally in the broader market. It fell 5 per cent for the week, its biggest weekly decline since October 2014.

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