Chip designer and computing firm Nvidia assured investors on Wednesday that demand for its artificial intelligence and data-center chips remains strong, even as the company continues to struggle with a slowdown in the personal-computers market.

Walmart's stock surged on Tuesday after the world's largest retailer by sales reported quarterly earnings that smashed expectations, indicating demand for groceries holds up despite higher prices.

In a sign that Warren Buffett thinks Taiwan Semiconductor Manufacturing Co. has bottomed out of a selloff of more than $250 billion, the legendary investor's Berkshire Hathaway Inc. took a stake of over $4.1 billion in the world's leading chipmaker.

It's been a challenging week for Roblox, with its stock plunging more than 20% Wednesday after the online video game company reported a larger-than-expected loss for the third quarter.

On Wednesday, Amazon shares hit a new 52-week low, closing at $86.14 a share and making it the first-ever public US company to lose more than $1 trillion in market capitalization.

Chinese e-commerce giant Alibaba, for the first time, declined to disclose the final sales tally of its annual Singles Day shopping festival, another sign of the strong headwinds facing China's economy and businesses.

On Wednesday, Beyond Meat Inc. reported tumbling sales and growing losses as rising freight and raw material costs eat into its margins.

After new rules threatened to cost Nvidia Corp. hundreds of millions of lost revenue, the most valuable chipmaker in the US has begun offering an alternative processor for customers in China to soften the blow from recently imposed US export restrictions.

After Walt Disney Co. reported weaker-than-expected fourth-quarter earnings Tuesday and wiped out about $15 billion in market value, the company said it plans to cut marketing and content budgets.

Facebook parent Meta Platforms Inc. is planning to begin widespread job cuts, joining Salesforce Inc. as it cut hundreds of workers from sales teams, seeking to improve profitability while facing slowing demand. Elsewhere, Billionaire Elon Musk unloaded another batch of Tesla Inc. shares to help fund his Twitter Inc. buyout.

While Activision Blizzard posted stronger-than-expected third-quarter earnings Monday, all eyes were on the video game publisher's all-cash deal to be acquired by Microsoft for $69 billion.

Apple Inc. warned shipments of its high-end iPhone models would be hindered amid China lockdowns affecting operations at a supplier's factory.

Following the results of its third-quarter earnings report Thursday, shares in PayPal Holdings Inc. were down as much as 13% in aftermarket trading despite beating earnings and revenue expectations.

Fractional shares give those who have just started investing with limited budgets access to the market. It also allows investors to invest a specific dollar amount on a regular basis and help diversify a portfolio.

Shares of the world's biggest maker of smartphone processors, Qualcomm Inc., fell sharply in after-hours trading on Wednesday after giving far weaker guidance than expected.