By John Carney, Senior Editor, CNBC.com NEW YORK ( CNBC) -- The $1 billion price tag on Facebook's deal to buy photo-sharing application Instagram may put it in hot water with antitrust regulators. To begin with the basics, Facebook will have to file an application--called a "Hart-Scott-Rodino filing--for approval of the acquisition with the Federal Trade Commission and the antitrust division of the Justice Department. The Clayton Act, a key piece of antitrust legislation dating back to 1914, requires all acquisitions that meet or exceed regulatory thresholds to notify regulators and put the deal on hold while regulators review it for possible violations of competition laws. The threshold levels vary depending on the size of the buyer and the acquired company. But all deals that result in a company with combined assets of over $272.8 million exceed the threshold. Facebook's acquisition of Instagram obviously surpasses the required filing threshold.
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Here's how a couple different sources explain Facebook's thinking: Last Tuesday, more than 1 million people download Instagram's new Android app on its first day of availability. Facebook begins to get nervous that a social-sharing company like Instagram is able to migrate from iOS to Android so seamlessly. Then comes word that Instagram has raised $50 million in new funding from deep-pocketed investors like Sequoia Capital and Greylock Partners. In other words, Facebook may have a challenger.
"I think Facebook panicked," says one observer. "So it decided to take out the competition before it had a chance to grow even bigger."
And, unlike most other companies, Facebook has the resources and streamlined organizational structure to put together such a deal on short notice.
In other words, Instagram didn't make a mistake accepting VC funding/dilution just days before agreeing to be acquired. Instead, it may be getting acquired, in part, because it accepted the new funding.My colleague Julia Boorstin's piece also indicates anticompetitive goals behind the deal.
If regulators at the FTC and Justice get wind of this narrative, they are likely to scrutinize the deal a bit more closely. What's more, Mark Zuckerberg's promise of "building and growing Instagram independently" could be read as a sign that the company does not see many synergies between the businesses and instead was merely seeking to fend off a potential competitor.