Stocks: 3 things to know before the open

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An eerie calm may be settling over markets but there's plenty to keep investors on their toes Tuesday.

Here are 3 things you need to know before the bell:

1. Stocks in focus -- eBay, Apple, Netflix, GM, Tesla, RadioShack: Shares in eBay (EBAY) fell in extended trading after it said that the head of its PayPal division, David Marcus, was leaving for Facebook (FB). Earlier Monday, Amazon (AMZN) launched a new service that's expected to go head-to-head with PayPal. It will allow customers to automatically pay recurring charges, such as phone bills, with their Amazon accounts.

Shares in Apple (AAPL) were still seeing support in premarket trading after the company had a seven-for-one stock split Monday that made the shares easier for small investors to purchase because of their lower face value.

Shares in Netflix (NFLX) were higher premarket after the company was reported to have buried the hatchet with Internet providers such as Verizon (VZ) over slow streaming video.

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General Motors (GM) shares may also move depending on developments at the automaker's shareholder meeting.

Tesla (TSLA), a notoriously volatile stock, may be worth watching as the company's founder and CEO Elon Musk holds a SpaceX event near Washington.

Meanwhile, Burlington Stores (BURL)announced a gain in net income for the quarter, compared to a year-earlier loss. But going forward, the clothing retailer projected a loss per share in the upcoming quarter.

RadioShack (RSH) reported a decline in sales and a worsening loss, compared to the year-earlier quarter. Their loss was nearly twice as big as forecast.

2. More records within reach? The S&P500 and Dow Jones Industrial Average both closed at new record highs Monday, in what was the ninth record close for the Dow this year. But the gains were slim and market volatility, as measured by the VIX (VIX) index, is at its lowest level in well over seven years.

The apparent calm is being seen by some as a red flag, who worry that investors may be becoming complacent.

U.S. stock futures were looking soft ahead of the opening bell.

Related: CNNMoney's Tech30

3. International movers: European markets were mixed in morning trading.

Asian markets also ended mixed. Markets in China jumped while the Nikkei in Japan declined by nearly 1%.

U.S. stocks closed slightly higher Monday. The Dow Jones industrial average added 19 points while the Nasdaq closed 0.3% higher and the S&P 500 ended up 0.1%.

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