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Model Y cars are pictured during the opening ceremony of the new Tesla Gigafactory for electric cars in Gruenheide, Germany, March 22, 2022.

Patrick Pleu | Pool | via Reuters

Shares in some chipmakers dipped on Thursday after electric vehicle maker Tesla said it plans to greatly reduce the use of silicon carbide transistors in its next-generation vehicle powertrains.

At Tesla’s 2023 Investor Day presentation on Wednesday, which largely focused on efficiency and controlling costs, powertrain engineering leader Colin Campbell took the stage to show how the company plans to reduce the cost of their cars’ powertrains, while maintaining high performance and energy efficiency.

Campbell revealed that, “In our next powertrain, the silicon carbide transistors that I mentioned, that are key component[s] but expensive, we figured out a way to use 75% less without compromising the performance or the efficiency of the car.”

Shares of ON Semiconductor and ST Microelectronics were each down more than 4%, while Wolfspeed dropped more than 9% and MP Materials more than 12% in mid-day trading, as investors worried that Tesla’s moves would be a harbinger for the automotive industry.

Campbell did not say when the company’s next-generation powertrain would be ready for high-volume production and use in the company’s vehicles, nor did he specify how much it currently spends on these transistors. Executives at the event did not reveal any firm details about the “next gen” Tesla, which some analysts refer to as the Model 2.

Chips made with silicon carbide transistors are widely used in electric vehicles. Generally, they withstand more heat, have a longer life and are more energy-efficient than semiconductors made with silicon power transistors, according to the Institute of Electrical and Electronic Engineers.

Bank of America analysts called Tesla’s claims “notable but premature.”

However, the analysts acknowledged, “If true, this technological advancement could be a major risk for the SiC materials industry (WOLF, COHR, Rohm) and devices (ON and European peers STMicro, Infineon – covered by Didier Scemama).”

They added the possibility that “cheaper [silicon carbide chips] could drive up EV adoption globally so what vendors lose on content could be partially offset by greater EV volumes.”

New Street Research analysts agreed generally, and wrote in a note on Thursday that the announcement from Tesla is actually a good thing for chipmakers as they expect demand to remain high throughout and beyond the EV industry.

They wrote of Tesla’s announcement: “The inverter of the new drivetrain will use a hybrid architecture,” that mixes silicon and silicon carbide transistors, with both types of transistors working together to handle peak loads in a Tesla vehicle, primarily during the vehicle’s acceleration. “This hybrid architecture is for the new platform only, i.e. a low-cost, small, lower-performance car, and will not be adopted for existing models (S, X, 3, Y), or the Cybertruck.”

New Street does not expect a lower-priced, next generation Tesla vehicle to “ramp in volumes before 2025 or 2026.”

Wells Fargo analysts are maintaining an overweight rating on shares of both Wolfspeed and OnSemi with a price target for Wolfspeed of $110 and a price target for OnSemi of $95.

Citing Yole Group in a note on Thursday, Wells Fargo analysts said in the near term the silicon carbide chip supply chain will remain tight due to strong demand from automakers across the board. Every growing EV maker will seek to scale up while controlling costs but in the near term, they will be more concerned about securing a supply of silicon carbide chips for their new models, many of which are set to launch this year and next, they said.

Michael Bloom contributed to this report.

Tesla shares dip more than 5% after hours as Investor Day falls short on specifics

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Here’s where Apple makes its products — and how Trump’s tariffs could have an impact

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Here's where Apple makes its products — and how Trump's tariffs could have an impact

Apple’s iPhone 16 at an Apple Store on Regent Street in London on Sept. 20, 2024.

Rasid Necati Aslim | Anadolu | Getty Images

Apple has made moves to diversify its supply chain beyond China to places like India and Vietnam, but tariffs announced by the White House are set to hit those countries too.

U.S. President Donald Trump laid out “reciprocal tariff” rates on more than 180 countries on Wednesday.

China will face a 34% tariff, but with the existing 20% rate, that brings the true tariff rate on Beijing under this Trump term to 54%, CNBC reported. India faces a 26% tariff, while Vietnam’s rate is 46%.

Apple was not immediately available for comment when contacted by CNBC.

Here’s a breakdown on Apple’s supply chain footprint that could be affected by tariffs.

China

The majority of Apple’s iPhones are still assembled in China by partner Foxconn.

China accounts for around 80% of Apple’s production capacity, according to estimates from Evercore ISI in a note last month.

Around 90% of iPhones are assembled in China, Evercore ISI said.

While the number of manufacturing sites in China dropped between Apple’s 2017 and 2020 fiscal year, it has since rebounded, Bernstein said in a note last month. Chinese suppliers account for around 40% of Apple’s total, Bernstein said.

Evercore ISI estimates that 55% of Apple’s Mac products and 80% of iPads are assembled in China.

India

Apple is targeting around 25% of all iPhones globally to be made in India, a government minister said in 2023.

India could reach about 15%-20% of overall iPhone production by the end of 2025, Bernstein analysts estimate. Evercore ISI said around 10% to 15% of iPhones are currently assembled in India.

Vietnam

Vietnam has emerged in the past few years as a popular manufacturing hub for consumer electronics. Apple has increased its production in Vietnam.

Around 20% of iPad production and 90% of Apple’s wearable product assembly like the Apple Watch takes place in Vietnam, according to Evercore ISI.

Other key countries

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Xiaomi delivers record cars in March as winners emerge in China’s EV race

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Xiaomi delivers record cars in March as winners emerge in China's EV race

A Xiaomi store in Shanghai, China, on March 16, 2025.

Qilai Shen/Bloomberg | Bloomberg | Getty Images

Chinese electric carmakers Xiaomi, Xpeng and Leapmotor each delivered nearly 30,000 or more cars in March, roughly twice several of their fellow startup competitors.

It’s a sign of how some automakers are pulling ahead, while BYD remains the market leader by far.

Xiaomi delivered a record number of electric vehicles in March, exceeding 29,000 units, the company announced on social media. That topped its prior run of delivering more than 20,000 vehicles in each of the past five months.

The SU7, Xiaomi’s flagship model, was involved in a crash on a highway on Tuesday that left three dead. The automaker on Tuesday afternoon released a statement on Chinese social media that the vehicle was in navigation on autopilot mode before the accident.

Based on preliminary information, the road was obstructed because of construction. The driver took control of the car but collided with construction infrastructure. Xiaomi added in the release that investigations were underway.

That came two weeks after the automaker announced on March 18 its goal to deliver 350,000 vehicles this year. There are also talks of the automaker expanding its second EV factory in Beijing to meet demand, Bloomberg reported on March 18. Xiaomi did not immediately respond to CNBC’s request for comment.

Its competitor Xpeng in March delivered 33,205 vehicles, the fifth consecutive month it has delivered over 30,000 units per month and reflecting a 268% surge in deliveries from the same month last year. March is also the fifth consecutive month the company has delivered over 15,000 units of the Mona M03.

Leapmotor delivered 37,095 vehicles, reflecting a 154% year-over-year growth. The Stellantis-owned automaker last month launched U.K. sales of two electric vehicle models, the T03 and the C10.

Li Auto delivered 36,674 vehicles in March, a 26.5% year-over-year increase, but fewer than every month in the second half of 2024. The company’s cars had gained early traction with Chinese consumers since most come with a fuel tank for charging the vehicle’s battery, reducing anxiety about driving range.

Tesla takes two of three top spots in China's most popular EV list

BYD sold 371,419 passenger vehicles in March, reflecting a year-over-year growth of 57.9%. Its overseas sales volume also hit a record high of 72,723 units in March.

In the same month, the automaker unveiled its “Super e-Platform” technology, which boasts 400 kilometers (roughly 249 miles) of range with five minutes of charging. The company in February also announced that it was integrating DeepSeek artificial intelligence to develop “DiPilot,” its advanced driver-assistance system.

Across the board, major companies across China’s electric car industry reported deliveries rose last month, indicating a pick-up in demand from the seasonally soft first two months of the year.

U.S. automaker Tesla sold 78,828 electric vehicles in China in March, marking a 11.5% year-over-year decline in growth.

Other Chinese carmakers saw growth in deliveries but some still struggled to break through the 20,000-unit mark.  

Nio delivered 15,039 vehicles, a 26.7% year-over-year growth, but well below the number of cars delivered in the months of May to December last year. Nio-owned Onvo, which markets its electric vehicles as family-oriented, in March recorded 15,039 units in deliveries.

Geely-owned Zeekr delivered 15,422 vehicles in March, increasing by 18.5% year over year. The company last month announced its rollout of free advanced driver-assistance technology to local customers in a bid to compete in the market.

Aito, as of April 2, has not published its delivery numbers for March. The automaker, which uses Huawei tech in its vehicles, on social media had reported monthly deliveries of 34,987 and 21,517 in January and February, respectively.

Quarterly performance

On a first-quarter basis, BYD remained in the lead with 986,098 vehicles sold. The automaker, which overtook Tesla in annual sales last year, surpassed the U.S. EV giant in battery electric vehicles sales this quarter.

Tesla sold 172,754 vehicles in China in the first quarter this year, according to monthly delivery numbers published by the China Passenger Car Association.

Xpeng also reported strong growth, with a total of 94,008 vehicles delivered in the quarter ending in March, reflecting a 331% year-over-year growth.

Leapmotor saw quarterly deliveries more than double to 87,552 units from 33,410 units the same period in 2024, according to publicly available numbers the company published.

However, Li Auto and Nio reported weaker growth than their competitors in the first quarter of the year.

Nio saw 42,094 vehicles delivered in the three months ended March 2025, an increase of 40.1% year over year. Li Auto saw a slower year-over-year growth of 15.5%, with a total of 92,864 vehicles delivered.

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De minimis trade loophole that boosted Chinese online retailers to end May 2

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De minimis trade loophole that boosted Chinese online retailers to end May 2

A driver for an independent contractor to FedEx delivers packages on Cyber Monday in New York, US, on Monday, Nov. 27, 2023.

Stephanie Keith | Bloomberg | Getty Images

President Donald Trump on Wednesday signed an executive order shutting the de minimis trade loophole, effective May 2.

Trump in February abruptly ended the de minimis trade exemption, which allows shipments worth less than $800 to enter the U.S. duty-free. The order overwhelmed U.S. Customs and Border Protection employees and caused the U.S. Postal Service to temporarily halt packages from China and Hong Kong. Within days of its announcement, Trump reversed course and delayed the cancellation of the provision.

Wednesday’s announcement, which came alongside a set of sweeping new tariffs, gives customs officials, retailers and logistics companies more time to prepare. Goods that qualify under the de minimis exemption will be subject to a duty of either 30% of their value, or $25 per item. That rate will increase to $50 per item on June 1, the White House said.

Use of the de minimis provision has exploded in recent years as shoppers flock to Chinese e-commerce companies Temu and Shein, which offer ultra-low cost apparel, electronics and other items. The U.S. Customs and Border Protection has said it processed more than 1.3 billion de minimis shipments in 2024, up from over 1 billion shipments in 2023.

Critics of the provision say it provides an unfair advantage to Chinese e-commerce companies and creates an influx of packages that are “subject to minimal documentation and inspection,” raising concerns around counterfeit and unsafe goods.

The Trump administration has sought to close the loophole over concerns that it facilitates shipments of fentanyl and other illicit substances on the claims that the packages are less likely to be inspected by customs agents.

Temu and Shein have taken steps to grow their operations in the U.S. as the de minimis loophole has come under greater scrutiny. After onboarding sellers with inventory in U.S. warehouses, Temu recently began steering shoppers to those items on its website, allowing it to speed up deliveries. Shein opened distribution centers in states including Illinois and California in 2022, and a supply chain hub in Seattle last year.

WATCH: President Trump signs executive orders for reciprocal tariffs

Pres. Trump signs executive orders for reciprocal tariffs

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