Navitas Semiconductor stock soared 222% in overnight trading. Nvidia will collaborate with Navitas Semiconductor on its next-generation 800V HVDC architecture.

The architecture will support systems that power Nvidia's GPUs, aiming to establish efficient and scalable power for next-generation artificial-intelligence workloads, Navitas said Wednesday.

The new device will additionally aim to improve reliability and reduce infrastructure complexity by directly converting grid power to 800V HVDC at the data center perimeter using solid state transformers and industrial-grade rectifiers. The company said this conversion will eliminate several steps from the current process.

Snowflake 's shares jumped over 7% to $192.47 in overnight trading after it topped first-quarter results estimates and forecast current-quarter revenue above expectations. Snowflake raised its fiscal 2026 forecast for product revenue on Wednesday, betting on strong demand for its data analytics services as enterprises prioritize artificial intelligence spending.

The company is also benefiting from higher enterprise spending as firms shift their workloads to the cloud while looking to develop AI applications.

Snowflake's AI deals with other startups have helped it cater to a larger cohort of companies looking to build AI agents through its platform, analysts have said.

The company forecast product revenue in the range of $1.035 billion to $1.040 billion for the current quarter, compared with estimates of $1.021 billion, according to data compiled by LSEG.

Lumen Technologies's mass-markets fiber business will be substantially bought by AT&T, which said the deal will accelerate high-speed fiber internet access for millions of Americans. The acquisition, expected to close in the first half of 2026, will create jobs in metro areas across 11 states and improve critical connectivity infrastructure, AT&T said. The deal includes about 1 million Lumen fiber subscribers across more than 4 million locations, all of whom will transition to become AT&T Fiber customers. Lumen shares climb 13% in overnight trading.

UnitedHealth shares continued to fall 3% in overnight trading after falling nearly 6% on Wednesday after the UK's Guardian newspaper reported the company made secret payments to nursing homes to reduce hospital transfers, adding to the woes of the healthcare conglomerate.

Hims & Hers stock fell 6% in overnight trading. Cigna will cap out-of-pocket costs at $200 per month for patients using the weight-loss drugs Wegovy and Zepbound through an add-on to its pharmacy benefit management plans, the company announced on Wednesday.

Crypto shares gained in overnight trading. Canaan rose 3.86%; CleanSpark, MARA Holdings, Bit Digital rose more than 2%.

The largest cryptocurrency climbed to a record $110,107. The previous high was set at roughly the time of Trump’s inauguration on Jan. 20.

Bitcoin and the broader crypto market have rallied in recent weeks thanks to regulatory tailwinds including the stablecoin bill advancing in the US Senate after a group of Democrats dropped their opposition Monday. The industry-backed regulatory bill is now set for debate on the Senate floor with a bipartisan group hoping to pass it as soon as this week.