Stocks: 4 things to know before the open

Investors love Tim Cook's Apple
Investors love Tim Cook's Apple

It looks like this week's downward trend will continue into Friday.

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

1. Another day of losses?: U.S. stock futures are edging lower, indicating all the major indexes could dip into the red when trading begins.

This follows four consecutive days of drops. The Dow Jones industrial average and S&P 500 have both declined by 2.5% since the start of the week. The Nasdaq has fallen by just over 3%. Before the fall, the tech-heavy index was trading near an all-time high.

CNNMoney's Fear & Greed Index shows there's a fair bit of fear in the markets right now.

"Geopolitical risk [is] set to remain over the weekend with the situation in Yemen tense and Greece needing to deliver serious and useful economic reforms by Monday if it is to receive the funds it needs so badly," explained Mike van Dulken, head of research at Accendo Markets.

Related: Stock markets are likely to fall further

2. International markets overview: European markets are mixed in early trading.

Asian markets ended the week with mixed results.

3. Stock market movers -- Adidas, Yahoo, Gamestop, Lufthansa: Shares in Adidas (ADDYY) are up by about 3.5% in Germany as investors react favorably to a turnaround plan presented by management at the sports apparel company. Shares in Yahoo (YHOO) are rising by about 2% premarket after the company announced plans to buy back an additional $2 billion of its own shares.

Gamestop (GME) is down by 6% premarket after the company reported quarterly results that missed expectations.

Lufthansa (DLAKF) shares gained 1%, steadying after hefty losses this week following the crash of its Germanwings flight in France Tuesday.

Related: CNNMoney's Tech30

4. Earnings and economics: BlackBerry (BBRY), Carnival (CCL) and Finish Line (FINL) are all reporting ahead of the open.

On the economic side, the U.S. government will post its third estimate of fourth quarter GDP at 8:30 a.m. ET.

Then at 10 a.m., the University of Michigan will release its final March reading of consumer sentiment.

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