Shares of postage payment facilitator Stamps.com (STMP) dropped as much as 11% in early trading Monday, before reviving to book "only" a 7.1% loss as of 12:15 p.m. EST. Stamps.com hasn't reported anything noteworthy today, nor are its earnings out just yet.
Instead, I think you can blame Amazon.com (AMZN -5.14%) for this one.
Three months ago, Stamps.com reported a big earnings beat, but said Amazon was bringing some of its "Fulfillment by Amazon" postage billing in-house and that might affect Stamps.com's business going forward. "Fulfillment by Amazon [is] just another one of the carriers that we support," said Stamps.com CEO Kenneth McBride, and so presumably Amazon's move wouldn't doom Stamps.com's business.
But investors were not reassured -- and sold off Stamps.com stock.
Today, I think Stamps.com's latest sell-off can likewise be traced back to Amazon and its announcement last week that it's launching a "Shipping With Amazon" service to deliver packages for businesses that sell goods on its website -- and eventually for businesses that don't even sell on its website. That news torpedoed the stocks of shipping companies FedEx (FDX -0.16%) and UPS (UPS -1.04%). It only makes sense that it would affect Stamps.com's stock as well.
Is Amazon trying to drive out of business every other company involved in shipping packages from Point A to Point B? Maybe, maybe not. But one thing's for sure: Amazon.com CEO Jeff Bezos is famous for his mantra:"Your margin is my opportunity."
That makes Stamps.com, which sports a 34.5% operating profit margin, look like a big fat opportunity for Bezos.