Parmy Olson, Columnist

Facebook Is Entering an Age of Uncertainty for Its Investors

The exposure of poor internal practices will fuel its regulation problems. Shareholders must be starting to worry.

Getting hard to ignore.

Photographer: Olivier Douliery/AFP

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For years Facebook Inc. stock has been a must own. The company enjoyed constant growth, regular user engagement and ad revenues that grew even with scandals tied to user data and fake news. But investors should be starting to worry a little.

Regulators have been given the tantalizing prospect of accessing internal documents that could bolster planned investigations into the company. Files leaked to the Wall Street Journal recently exposed troubling internal practices and some of the documents have been handed over to the U.S. Securities and Exchange Commission by a person seeking federal whistleblower protection.