Why Apple (AAPL) Stock Is Down Today

NEW YORK (TheStreet) -- Shares of Apple  (AAPL) declined 2.97% to $100.23 in morning trading Wednesday after Samsung (SSNLF)  announced it had teamed with Facebook's  (FB) Oculus to bring virtual reality to its new 5.7-inch Galaxy Note 4.

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Samsung unveiled the accessory, called Samsung Gear, at its Samsung Unpacked event in Berlin on Wednesday. The Gear can transform the Note into a virtual reality 3D screen. The accessory is based on the Oculus Rift and could be huge in the mobile gaming market, as it can turn the Note into a hands-free virtual reality device.

Samsung made the announcement less than one week ahead of Apple's event on Sept. 9, during which many expect the tech giant to unveil the iPhone 6 and perhaps another device.

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Sony  (SNE) also announced its main smartphone, the Xperia Z3, would release in the U.S. through T-Mobile  (TMUS) toward the end of 2014 to coincide with a global release. The company confirmed the news at the IFA electronics trade show in Berlin on Wednesday.

The releases of the last few versions of Sony's smartphones have been delayed in the U.S. or have not had significant carrier support.

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