Shares of Advanced Micro Devices slumped more than 5% after the chipmaker‘s earnings fell short of earnings expectations and raised concerns about the timing of a restart in China shipments.

The Santa Clara, California-based company reported adjusted earnings of 48 cents per share, falling short of the 49 cents per share expected by analysts polled by LSEG.

CEO Lisa Su singled out the hit from U.S. controls on artificial intelligence chips in a call with analysts.

“AI business revenue declined year over year as U.S. export restrictions effectively eliminated MI308 sales to China, and we began transitioning to our next generation,” Su said.

For the current quarter, AMD forecasted $8.7 billion in revenue, plus or minus $300 million, versus $8.3 billion expected by analysts. The company said its guidance does not account for revenue from its MI308 AI chip designed for the China market to work around chip restrictions.

During an interview with CNBC’s “Squawk on the Street” on Wednesday, Su said the company has been working closely with the Trump administration on license requirements necessary to ship its chips to China, but took a “prudent” approach to its guide.

“From our standpoint, we think we have an extremely strong portfolio,” she said. “Tens of billions of dollars is the opportunity in a market that’s going to be, let’s call it 500 billion plus over the next few years.”

Earlier this year, AMD said it would take a $800 million hit during the second quarter as a result of chip restrictions. AMD said in July it plans to soon resume those shipments as the Department of Commerce gets set to restart application review.

Some Wall Street analysts raised concerns over how soon those shipments may begin. Analysts at Morgan Stanley called the timing of the restart in China shipments “vague,” adding that the company requires a “near terms upside in GPU” to keep its premium.

“China upside sounds like it will take time to materialize (and it sounded like we shouldn’t count too much on it even if licenses are granted), pull-forward and inventory risks remain, and opex continues to march higher which is limiting earnings leverage,” wrote Bernstein analysts.

Investors also raised concerns about the company’s datacenter business, which grew 14% to $3.2 billion and includes its central processors and graphics processing units.

“We are more guarded on the company’s ability to drive significant scale in Datacenter GPUs over time, and think operating leverage is likely to be hampered by the significant OpEx we believe is needed for the company to support its software and systems efforts tied to datacenters,” wrote analysts at Goldman Sachs.

Su said Wednesday the company is seeing strong forecasts for compute from some of its largest customers and anticipates an “inflection point” into the third quarter.

“The data center business is actually the main driver of our growth, and we look at that as the opportunity in front of us,” she added.

Despite the post-earnings move, AMD’s revenues grew 32% from a year ago to $7.69 billion and topped a $7.42 billion estimate from analysts polled by LSEG. Net income jumped to $872 million, or 54 cents per share, up from $265 million, or 16 cents per share in the year-ago period. 

WATCH: Bernstein’s Stacy Rasgon on semiconductor tariffs, impact on sector and AMD Q2 results

CNBC’s Kif Leswing contributed to this article.

Shopify shares soared 20% Wednesday after the company topped analysts’ estimates for the second quarter, and gave rosy guidance for the third quarter.

Here’s how the company did, compared with estimates from analysts polled by LSEG:

• Earnings per share: 35 cents adj. vs. 29 cents
• Revenue: $2.68 billion vs. $2.55 billion

Second-quarter sales surged 31% year over year to $2.68 billion, an acceleration from a year ago, when revenue expanded roughly 20%.

The Canadian e-commerce company also offered third-quarter guidance that surpassed expectations. Shopify said it expects revenue to grow at a “mid-to-high twenties percentage rate” year over year, which is higher than the 21.7% growth projected by analysts, according to StreetAccount.

The upbeat report and guidance suggested Shopify, which sells software for e-commerce businesses, is navigating President Donald Trump‘s trade war better than feared. Last quarter, the company noted there was macroeconomic “uncertainty ahead,” but that it wasn’t seeing significant price increases among its merchants due to the tariffs.

“We had factored into our guidance some potential impact from tariffs, which did not materialize,” Shopify CFO Jeff Hoffmeister said on a conference call with investors.

Online retail peers Amazon and eBay last week reported strong revenue growth, indicating that consumers kept buying despite concerns of tariffs and rising prices.

The company hasn’t seen any “drops in U.S. demand, whether inbound, outbound or local” and instead saw the market accelerate in the second quarter, Hoffmeister said. Many Shopify merchants have raised prices, he added.

Shoppers don’t appear to be stocking up or pulling forward demand in anticipation of the tariffs, he said.

“So far we’re seeing no slowdown from the tariffs and that includes up until early August, where we are today,” Shopify President Harley Finkelstein said in an interview on CNBC’s “Squawk on the Street.” “The millions of stores on Shopify are doing really, really well.”

Shopify’s gross merchandise sales, or the total volume of merchandise sold on the platform, also came in higher than expected. GMS grew 29% year over year to $87.8 billion, surpassing Wall Street’s projected $81.5 billion, according to StreetAccount.

The company said it expects operating expenses as a percentage of revenue to be 38% to 39%, compared to 39% to 40% in the previous quarter.

Shopify has been investing heavily in adding more artificial intelligence tools to its platform as a way to attract and retain merchants. In May, the company released an “AI store builder” that generates webstores based on a few keywords. Shopify on Tuesday launched a set of tools to support shopping via AI agents.

Company executives said these investments appear to be paying off.

“As we continue to expand our platforms capabilities, add new products, and build for where commerce is heading, Shopify is becoming even more compelling to a wider range of businesses than ever before,” Hoffmeister said.

WATCH: Shopify President: We do well in times of disruption

Uber reported second-quarter results on Wednesday that beat on revenue and announced the authorization of a $20 billion stock buyback.

Here’s how the company did versus analysts’ estimates compiled by LSEG:

• Earnings per share: 63 cents vs. 63 cents expected.
• Revenue: $12.65 billion vs. $12.46 billion expected.

Here are the key segment numbers:

• Mobility (gross bookings): $23.76 billion, up 18% year over year
• Delivery (gross bookings): $21.73 billion, up 20% year over year

Uber’s revenue increased 18% from $10.7 billion a year earlier. For the quarter ending June 30, net income rose to $1.36 billion, or 63 cents per share, from $1.02 billion, or 47 cents per share, a year ago.

Gross bookings rose 17% to $46.8 billion, and the company reported adjusted earnings of $2.12 billion.

Uber’s “monthly active platform consumers” increased 15% to 180 million in the second quarter. The company said users booked around 3.3 billion trips during the period, up 18% from a year earlier.

CEO Dara Khosrowshahi said in prepared remarks that Uber sees “enormous potential in better serving families across all stages of life.”

In the second quarter, Uber launched Senior Accounts, including an “app experience” that features larger text and icons, and other features that allow family organizers to book and manage rides for others.

The company also recently started testing a new feature in the U.S. that allows women riders or drivers to avoid being paired with men in their ride when possible.

In some international markets, Uber Eats’ food delivery service is more popular than ride hailing, and the company is working to increase “cross-platform activity” to drive sales growth, Khosrowshahi said.

Uber shares are up 48% this year as of Tuesday’s close, while the Nasdaq has gained about 8% over that stretch.

Executives will go over results and the company’s outlook on a call with analysts at 8 a.m. ET.