It's almost Friday...

We're turning our attention to the latest developments in the U.S.-China trade war as Huawei goes under the microscope, earnings from Walmart (WMT - Get Report) , Berkshire Hathaway's stake in Amazon (AMZN - Get Report) and a lookahead at earnings from Nvidia (NVDA - Get Report)  and Pinterest (PINS) after the bell. 

Walmart's Earnings

Real Money Stock of the Day Walmart posted stronger-than-expected first-quarter earnings Thursday as same-store sales in the United States beat expectations amid a renewed push in the retailer's e-commerce division.

#StockoftheDay Walmart $WMT reports earnings:
EPS: $1.13
Revenue: $123.925 billion
U.S. Comp Sales: Up 3.4%

— TheStreet (@TheStreet) May 16, 2019 

Walmart said adjusted earnings for the three months ending in April, the retailer's fiscal first quarter for the 2020 financial year, came in at $1.13 per share, well ahead of the $1.02 forecast. Reported earnings rose 84.7% from last year to $1.33 per share, reflecting a 20 cents per share gain from the group's holding in China-based online retailer JD.com (JD - Get Report) .

Action Alerts PLUS senior analyst Jeff Marks takes a look at the retail giant's comp sales, which beat for the 19th straight quarter. Can the streak continue? 

Pinterest and Nvidia Earnings After the Bell

Pinterest is set to release its first earnings report as a public company after the bell, with analysts expecting a loss of 11 cents per share. 

Marks breaks down what he's watching in the company's earnings report.

Nvidia is also expected to report earnings after the bell, with analysts expecting earnings per share of 79 cents. 

With all of the China headlines, investors will have a close eye on any perceivable impact to Nvidia. Marks breaks down what to watch going forward. 

Go Behind the Label:  Did You Pin That? A History of Pinterest

Berkshire Hathaway's Amazon Stake

Warren Buffett's Berkshire Hathaway (BRK.A - Get Report) revealed its first investment in online giant Amazon Wednesday, a stake that is now closing in on $1 billion.

Berkshire Hathaway owned 483,300 shares in Amazon as of March 31, the investment group said in a regulatory filing with the Securities and Exchange Commission, a stake that is now worth over $900 million based on last night's closing price of $1,871.15 per share, reported TheStreet's Martin Baccardax. Buffett told CNBC earlier this month of the stake purchase, his group's first investment in Amazon, while chiding himself as an "idiot" for not buying it sooner.

Marks takes a step back to look at a more educational angle -- what impact does holding a large stake in any stock have on a portfolio?

Related. Walmart Stock Moves Over the Century Mark on Earnings

Related. What the Huawei Market Reaction Says About U.S. Exposure to China

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