This led to investors worrying Facebook's problems are not unique, resulting in share sell-offs throughout the tech sector on Wednesday.
"While those actions might take time to play out, it is still possible that threatened fines associated with GDPR to Facebook or other sellers of advertising could also have the effect of spooking advertisers into changing how they use data", said Wieser, who thinks the shares should be worth $140 United States - well below Thursday's level.
More disconcertingly for analysts and investors, though, company officials warned on the call that its annual growth rate would decline by the high single digits, percentage wise, in the second half of the year.
'The real concern is the revenue trajectory, ' one investor told the Financial Times when asked about Facebook's share price. "The company earned $1.74 per share, ahead of the $1.72 per share analysts were expecting". Amazon shares, up 55 percent this year versus 6 percent for the S&P 500 as of Thursday's close, trade at a premium, too. Not only that but Facebook has had concerned citizens of the world question its privacy, data collection, and its stance on fake news, and hate speech.
The biggest blow to traders was the fact that there had been no growth in daily active users. While the company posted an earnings beat, revenue was below analysts' guidance as the company raked in $13.23 billion in sales, below the $13.23 billion that analysts were calling for. But the ongoing scandals have caused many people to take another look, he said.
"Our community and business continue to grow quickly", said Zuckerberg. Those European privacy regulations, known as the General Data Privacy Regulation, or GDPR, went into effect with just one month left in the second quarter.
Its Q2 report warned profit margins would plummet for years due to costs to improve privacy safeguards and slowing usage in its big advertising markets.
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Kammenos denied accusations that the Greek government failed to protect its citizens. "This is a crime from the past", he said. A photo shows a burned house following a wildfire at the village of Neos Voutzas, near Athens, on July 24, 2018.
Zoo accused of painting a donkey, passing it off as a zebra
A visitor to a Cairo zoo poses for a photo with one of the "Zebras" in the zoo which are suspected to be painted donkeys. However, a veterinary contacted local news outlet Extranews.tv to confirm that the zoo's animals were not zebras.
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The summit runs through Friday with various heads of BRICS attending. "BRICS has the strategic potential to re-shape world trade". This week the BRICS business council are holding a summit to chart a way forward on business and trade with the five countries.
He added that Facebook has "a track record of resetting revenue growth and expense expectations only to turn around and exceed those expectations the following quarter".
In a research note, he said Facebook's outlook "suggests that while the company is still growing at a fast clip, the days of 30 percent-plus growth are numbered".
Shares in Alphabet were unchanged while those in Apple and Netflix slipped just a third of a percent.
The firm said it had 2.23 billion monthly active users at the end of June, up 11% on June 2017, marking the slowest growth in more than two years. Quarter after quarter, Facebook has been a remarkably reliable growth machine.
When people sign up with Facebook, they usually make a huge amount of data available to the group.
But there's also been a notable slowdown in user growth.