Uncertainty - This is the theme of the world's largest semiconductor company earnings season, and the demand for its products is unclear due to changes in U.S. tariff policies and export restrictions.

U.S. President Donald Trump's "reciprocity" tariffs came into effect in April, although they stopped shortly after. The White House also exempted certain technology products, such as smartphones and chips. However, the United States is investigating imports of semiconductor technology that may assume new responsibilities.

Meanwhile, Washington added more semiconductor products last month Nvidia and AMD List of items to restrict exports to China is built on the roadside of the Biden era.

Changing tariffs and Chinese policies have surprised the executives of the world's largest chip companies, having a clear impact on their business.

Despite first-quarter revenue estimates, the loss of revenue was $1.5 billion due to AI ChIP export pathways due to AI ChIP export pathways, despite first-quarter revenue estimates.

Super micro Disappointing guidance was issued Tuesday, amid tariffs and macroeconomic uncertainty. The company said it will not provide guidance for fiscal 2026 until “visibility” becomes clearer. The stock fell 4% in the previous trade.

and Malville Tuesday said it would postpone its previously planned investor day on June 10 to a “calendar future date for 2026”. The company's shares fell 4.4%.

"We have decided to postpone Investor Day given the current macroeconomic environment," Matt Murphy, CEO of Malville, said in a statement.

Semiconductor stocks have been under pressure amidst macroeconomic uncertainty and growing trade policies from the United States Microsoft and Amazon Continue to invest billions of dollars in building data centers.

this Vaneck semiconductor ETFa basket of chip stocks fell nearly 12% this year.

It’s not just American companies that feel the heat. Samsung said last month that demand volatility is expected to be high due to changes in tariff policies and macroeconomic uncertainty.

"It is difficult to accurately predict the business impact of tariffs and countermeasures due to rapid changes in policy and geopolitical tensions among major countries," Samsung executives said in earnings appeal.

“There is a lot of uncertainty before us.”

Samsung is one of the largest memory chip manufacturers in the world.

"The semiconductor sector is in a complex combination of demand signals and geopolitical headwinds," Ben Barringer, global technical analyst at Quilter Cheviot, told CNBC via email.

Marvell's decision to postpone its investor day "added a layer of uncertainty when clarity is insufficient" and the super micro prospect "raised eyebrows."

"With macro uncertainty and export restrictions still looming, chip manufacturers' paths toward them are still bumpy, and potential demand will increase even in some areas," Barringer added.

The U.S. chip industry is trying to show that it is leading in technology with China and should allow more products to be sold there.

NVIDIA CEO Jensen Huang told CNBC on Tuesday that China could become a $50 billion AI market in two to three years.

"It will be a huge loss to not be able to solve the problem as an American company. It will bring back revenue, it will bring back taxes, which will create a lot of work in the United States," Huang said.

Over the past few years, both Biden and Trump-led Washington have wanted to use export restrictions to limit China's access to U.S. technology in areas such as AI and semiconductors. This prompts Chinese companies to seek to create viable competitive products for companies like Nvidia, which will focus on local technology.

Chinese companies such as DeepSeek and Alibaba High-performance AI models can also be introduced.

NVIDIA's Huang said that AI is currently competing, but American companies should be able to compete with China.

"The United States has to recognize that we are not the only country in that race, we have competitors. We are full of confidence, we are a confident country, we have a confident company, we are not afraid of games. We look forward to a game. Let's play," Huang told CNBC.

“So, I think it’s time for the United States to realize that we need to put the pedals on the metal… we just need to go.