Stocks: 5 things to know before the open

premarkets trading thursday
Click on the chart for more premarket data.

Brace yourself for some big-name stocks like Tesla to swing wildly this morning when trading gets underway.

Here are the five things you need to know before the opening bell rings in New York:

1. Major movers -- Tesla, Mondelez, Keurig, Transocean: Shares in Tesla (TSLA) are set to fall by roughly 6% at the open after the company warned that it might not deliver as many electric vehicles in 2015 as it originally expected.

Mondelez (MDLZ) shares are set to rally by about 8% after investment firm Pershing Square, led by activist investor Bill Ackman, announced it had bought a 7.5% stake in the food firm.

Quarterly earnings from Keurig (GMCR) sent its stock price plummeting nearly 30% in extended trading. It reported weak sales and plans to lay off more than 300 workers.

And shares in Transocean (RIG) are rallying by 6% premarket after the oil services firm reported better-than-expected earnings late on Wednesday.

2. Media slump continues: Investors were selling media stocks Wednesday, and that downward momentum could continue into Thursday.

The selling was apparently triggered by anxiety about cable customers ditching their subscriptions.

21st Century Fox (FOX) and CBS (CBS) reported earnings after the closing bell Wednesday. Both companies did better than analysts were expecting, yet both companies' stocks were down in after-hours trading.

Related: Fear & Greed Index

3. Earnings: Sea World (SEAS), Build-A-Bear (BBW), Cinemark (CNK), New York Times (NYT), Orbitz (OWW), Rio Tinto (RIO), Michael Kors (KORS), Adidas (ADDDF) and Viacom (VIA) are among the companies reporting quarterly earnings this morning.

After the closing bell, companies including Zynga (ZNGA), Post (POST) and Overstock.com (OSTK) are expected to report.

4. Economics: Weekly unemployment claims data will be released by the U.S. government at 8:30 a.m. ET. At 10:30 a.m. commodity traders will get to see the latest data on natural gas inventories.

In the U.K., the Bank of England is issuing its decision on interest rates Thursday, as well as publishing the minutes from its rate meeting and releasing an inflation report.

Economists don't expect the central bank to change its rates, but they're excited for the data drop nonetheless.

"The Bank of England [is] ... overloading economists with goodies and producing a sugar-induced moment of hyperactivity," said Paul Donovan, a senior economist at UBS.

Related: CNNMoney's Tech30

5. Stock markets overview: There's plenty to get excited about in the markets, but the overall indexes are relatively flat Thursday.

U.S. stock futures are sitting around the levels where they closed on Wednesday.

European markets are relatively calm in early trading, while Asian markets ended with mixed results.

In Greece, the benchmark index is rising about 2% after three punishing days of losses. Greek bank trading is volatile, with some stocks moving up and some pushing even lower.

Looking back to Wednesday, the Dow Jones industrial average closed unchanged, while the S&P 500 added 0.3% and the Nasdaq grew by 0.7%.

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