Here are five things you must know for Monday, July 23:   

1. -- Stock Lower Amid Simmering Trade Tensions

U.S. stock futures pointed lower on Monday, July 23, European shares fell and Asian stocks finished the session mixed as investors picked through a number of developments in the White House's ongoing trade disputes with its allies and trading partners.

Contracts tied to the Dow Jones Industrial Average I:DJI  fell 14 points, futures for the S&P 500 undefined  declined 2.55 points and Nasdaq I:IXIC futures were down 31.50 points.

An official communique from a meeting of G-20 finance ministers and central bankers over the weekend in Buenos Aires reiterated the downside risks to global growth, saying they included "rising financial vulnerabilities, heightened trade and geopolitical tensions, global imbalances, inequality and structurally weak growth" following Donald Trump's declaration last week that he was "ready to go" in imposing tariffs on $500 billion worth of China-made goods in his effort to reduce a record trade deficit with the world's second-largest economy.

Trump will be meeting later this week in Washington with European Commission President Jean-Claude Junker, which comes amid increasing pressure from the White House for other nations to revert to "zero tariff" barriers in bi-lateral agreements with the U.S.

The economic calendar in the U.S. on Monday includes Existing Home Sales for June at 10 a.m. ET.

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2. -- Alphabet Highlights Monday's Earnings Calendar

TheStreet's Eric Jhonsa doesn't expect a ton of drama from Alphabet Inc.'s (GOOGL) - Get Alphabet Inc. Class A Report earnings report on Monday but said the web giant's report and earnings call should help answer an important question or two about search - its largest business - and maybe provide some useful details about how smaller businesses are progressing.

Hasbro Inc. (HAS) - Get Hasbro, Inc. (HAS) Report jumped 4.9% in premarket trading after the toymaker's second-quarter earnings and sales smashed analysts' expectations.

Halliburton Co. (HAL) - Get Halliburton Company (HAL) Report earned 58 cents a share in the second quarter, meeting forecasts. The stock fell 0.4%.

Illinois Tool Works Inc. (ITW) - Get Illinois Tool Works Inc. (ITW) Report  also is expected to report earnings on Monday.

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3. -- Fiat Chrysler's Marchionne Steps Down as CEO

Jeep executive Mike Manley will be the new CEO of Fiat Chrysler Automobiles NV

(FCAU) - Get Fiat Chrysler Automobiles N.V. Report

 after long-time leader

Sergio Marchionne

 stepped down after suffering complications after surgery.

Marchionne, 66 years old, joined Fiat in 2004 and led the company's merger with bankrupt U.S. carmaker Chrysler. Manley, 54, has led the Jeep brand since June 2009 and the Ram brand from October 2015. He's been with the company since 2000.

Fiat Chrysler shares fell 3.6% in premarket trading on Monday.

4. -- Tesla Asks Suppliers for Help

Tesla Inc. (TSLA) - Get Tesla Inc Report has asked some suppliers to refund a portion of what the electric vehicle maker has spent previously in an effort to reduce costs and become profitable.

The company, according to a memo reviewed by The Wall Street Journal that was sent to a supplier last week, said it was asking its suppliers for cash back to help it become profitable. Tesla requested the supplier return what it called a meaningful amount of money of its payments since 2016, the memo said.

Tesla declined to comment on the specific memo. But it confirmed it was seeking price reductions from suppliers for projects, some of which date back to 2016, and some of which haven't been completed. The company called such requests a standard part of procurement negotiations, the Journal reported.

5. -- Papa John's Adopts a 'Poison Pill'

Papa John's International Inc. (PZZA) - Get Papa John's International, Inc. Report on Sunday adopted a shareholder rights plan, or "poison pill," likely to prevent John Schnatter, the pizza chain's founder, from gaining a controlling stake in the company.

Schnatter owns owns 29% of Papa John's shares and has indicated he won't give up control of the company without a fight. 

Schnatter was forced to resign after Forbes reported earlier this month that the executive used the N-word in a media diversity training session in May. Shatter has admitted to using the word, but contends that it was to make a point, not as a racial epithet.

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