Quickly catch up on today's business news

Cost of a trade war: Yesterday, the US banned Huawei from selling telecom gear to the United States. But losing Huawei as a customer could cost US tech companies $11 billion.

Watch out, Walmart: German discount grocery store Aldi makes customers bag their own groceries and charges a quarter to use shopping carts. But it's working. Here's how the company is completely reshaping America's supermarket industry.

Luckin jolts Wall Street: Starbucks' big rival in China soared in its market debut, jumping nearly 50% at one point during the day.

A Cray-z purchase: Shares of Cray surged 22% after Hewlett Packard Enterprise said it would buy the legendary tech company for $1.3 billion. You may remember Cray computers from their prominent cameo in 1993's "Jurassic Park."

A first time for everything: Baidu, one of China's biggest tech companies, posted its first loss since going public in 2005. The company blamed the drop partially on China's broadening economic slowdown.

Hurting the heartland: The escalating trade tension between the US and China is bad news for farmers and tractor maker Deere. The company's stock fell 7% after it reported disappointing earnings and lowered its outlook.

False sense of safety: Earlier this week, WhatsApp revealed a security flaw that could let hackers access users' phones. While most people were never at risk of having their private chats revealed, there's still plenty to worry about.

RIP Grumpy Cat: The furry internet sensation, who passed away earlier this week, launched a thousand memes -- and a profitable business for her owners. But other celebrity pets might have a harder time achieving that level of success.