Here are five things you must know for Friday, Sept. 29:

1. -- U.S. stock futures traded mixed on Friday, Sept. 29, as the benchmark indexes looked as if they'll close out September and the third quarter with gains.
 
Stocks ended the session on Thursday, Sept. 28, to the plus side and the S&P 500 secured a new record. For the month, the S&P 500 has risen 1.6%, the Dow Jones Industrial Average has gained about 2%, and the Nasdaq was up 0.4%.
 
European stocks traded higher on Friday while Asian shares finished the session mostly higher though Japan's Nikkei 225 index fell slightly.
 
The economic calendar in the U.S. on Friday includes Personal Income and Outlays for August at 8:30 a.m. ET, Chicago PMI for September at 9:45 a.m., Consumer Sentiment for September at 10 a.m., and the weekly Baker Hughes Rig Count at 1 p.m. 
 
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2. -- Volkswagen AG ( VLKAY) shares fell sharply Friday after the world's biggest carmaker said it would take a $3 billion hit to its third-quarter earnings linked to its plans to buyback diesel engine cars from U.S. customers sold during its emissions scandal.

VW said the $3 billion charge would pay for the program, which it said was part of a settlement with authorities in North America and is "proving to be far more technically complex and time consuming" than first estimated.

The stock fell 1.6% in trading in Frankfurt.

VW cautioned in late July that while first-half earnings were largely in-line with expectations, it nonetheless saw "challenging" conditions ahead owing to intense competition and its ongoing issues with authorities over diesel emissions.

3. -- SpaceX aims to launch its first cargo mission to Mars in 2022 and send people toward the planet two years after that, said Elon Musk, CEO of SpaceX and Tesla Inc. ( TSLA) .

Musk unveiled his company's Mars-colonization plan early Friday at the 68th International Astronautical Congress in Adelaide, Australia.

Space.com reported on Friday that Musk updated the architecture that was revealed at the same event last year. That previous presentation, according to Space.com, introduced a huge, reusable rocket-spaceship combination called the Interplanetary Transport System, which Musk envisioned helping to establish a million-person city on Mars within the next 50 to 100 years.

 
4. -- Lawmakers weren't too satisfied after Twitter Inc. ( TWTR) told congressional investigators it has suspended at least two dozen accounts that may have been tied to Russia.

Virginia Democratic Sen. Mark Warner said Twitter's explanations of its actions against Russia-linked accounts were "deeply disappointing," and he suggested the company doesn't understand the seriousness of Congress' investigation into Russian interference in the 2016 election, the Associated Press reported. Twitter executives met behind closed doors with staff members of both the Senate and House intelligence committees for several hours on Thursday.

Warner said the information Twitter shared "was frankly inadequate on almost every level."
 
Twitter shares were rising 0.4% in premarket trading on Friday.

The disclosures by Twitter follow Facebook Inc.'s (FB) revelations that about 3,000 ads were purchased by entities with likely ties to Russia and as congressional investigators are examining the spread of false news stories and propaganda on social media during the campaign.

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5. -- Whole Foods Market, the upscale grocer recently acquired by Amazon.com Inc. (AMZN) , said Thursday it suffered a credit card security breach at some taprooms, restaurants and other in-store venues.

Whole Foods said it uses a different point-of-sale system for its roughly 450 U.S. stores, and that system wasn't involved in the data hack. Amazon transactions also weren't involved, the company said.

"Whole Foods Market recently received information regarding unauthorized access of payment card information used at certain venues such as taprooms and full table-service restaurants located within some stores," a statement from the company said.

"When Whole Foods Market learned of this, the company launched an investigation, obtained the help of a leading cyber security forensics firm, contacted law enforcement, and is taking appropriate measures to address the issue."

More than 40 Whole Foods stores sell beer on tap, according to reports. The company didn't immediately say how many restaurants are in its stores.

Amazon rose 0.4% in premarket trading. The stock has gained 27.5% so far in 2017.

This story has been updated from 6:13 a.m. ET.

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