NEW YORK / SANTA CLARA — November 10, 2026 — A little-known Wall Street short-selling firm is attracting extraordinary attention after its warning about Nvidia’s China business resurfaced amid allegations involving the chipmaker’s chief executive, a Singapore-based AI company and a suspected foreign intelligence operation.
On May 13, 2026, New York-based Culper Research published a 40-page report questioning whether Nvidia’s exposure to Chinese demand was much larger than investors understood.
The firm disclosed that it was betting against Nvidia shares.
At the time, the warning attracted relatively little market concern. Nvidia shares actually rose more than 2% that day as enthusiasm for artificial intelligence continued to dominate trading.
Six months later, the situation looks dramatically different.
Nvidia’s board has opened an independent investigation following reports that chief executive Jensen Huang may have been targeted by a Chinese intelligence operation involving Alice Huang, a former executive associated with Singapore-based Megaspeed International.
Culper’s May research had already raised questions about the relationship between Jensen Huang and Alice Huang.
The research firm also alleged that Megaspeed was part of a network through which Chinese customers could obtain advanced Nvidia computing technology despite US export restrictions.
Its central investment argument was that Nvidia’s China-related business exposure had not disappeared but had become more difficult to identify.
The allegations remain contested and do not establish illegal activity.
Nevertheless, the renewed scrutiny has transformed a relatively obscure investment report into one of Wall Street’s most closely examined early warnings about Nvidia.
But did Culper Research identify an overlooked financial and regulatory risk months before the wider market—or is its apparent foresight being overstated now that the Nvidia controversy has erupted?
Who Is Culper Research?
Culper Research is an activist short-selling research firm founded by Christian Lamarco.
Its investment approach involves investigating publicly traded companies that it believes are overvalued or have failed to disclose material risks.
When Culper identifies a target, it may establish a short position and publish research explaining why it expects the company’s share price to decline.
The firm’s name is a reference to the Culper Ring, a clandestine intelligence network established during the American Revolutionary War.
George Washington used the network to collect information about British military activities.
The historical reference reflects Culper’s emphasis on investigative research and uncovering information that it believes markets have overlooked.
But despite the unusual branding, Culper is a financial research business, not an intelligence agency.
Its commercial objective is to profit from investment positions.
Bloomberg reported that Lamarco previously worked at an investment fund and a long-short hedge fund.
The company’s previous targets include smaller, less widely followed businesses, although it has also published research on prominent technology companies.
Nvidia was an unusually high-profile target.
Culper’s May 13 Warning: Nvidia Had a China Problem
On May 13, Culper published a report titled Nvidia: The China Problem.
The firm disclosed that it had taken a short position in Nvidia.
Its argument focused on the possible difference between Nvidia’s reported direct China business and the ultimate sources of demand for its advanced processors.
Washington had restricted exports of certain sophisticated AI chips to China.
Nvidia had described the impact on its ability to serve the Chinese computing market.
Culper argued that the official sales picture might not capture transactions involving intermediaries or computing infrastructure based outside mainland China.
Its report estimated that more than 20% of Nvidia’s fiscal 2026 computing revenue remained connected to Chinese demand.
That figure was Culper’s analytical estimate, not an independently audited revenue disclosure.
The firm alleged that some customers could be obtaining restricted AI computing capacity through companies operating in Southeast Asia.
Those assertions required evidence of specific transactions, destinations, customers and regulatory violations before they could be treated as proven.
At the time, investors largely continued focusing on Nvidia’s growth prospects.
The company was benefiting from enormous investment in AI infrastructure, and its shares remained near record levels.
Why Megaspeed Became the Center of the Investigation
Culper identified Singapore-based Megaspeed International as a particularly important company in Nvidia’s international customer network.
Megaspeed operates in the AI computing and data-center industry.
Such companies purchase advanced processors and provide computing resources to businesses and institutions.
This business model is legitimate and increasingly important to modern artificial intelligence development.
But it can create complicated export-control questions.
A processor may be physically located in one country while serving customers in another.
Investigators must determine whether the arrangement complies with restrictions governing the relevant equipment and users.
Culper alleged that Megaspeed could have served as an intermediary connecting restricted computing resources with Chinese customers.
Megaspeed has denied illegal chip diversion.
The short seller’s allegations do not independently establish that the company violated US law.
The $3 Billion Megaspeed Financial Warning
One of Culper’s most significant findings concerned Megaspeed’s reported financial expansion.
According to the firm’s analysis, Megaspeed’s total liabilities and equity increased from approximately $33 million at the end of 2023 to around $3 billion by the end of 2024.
Culper highlighted approximately $2.9 billion in refundable deposits recorded during that period.
It questioned the source of those funds and alleged possible financing connections to Alibaba-linked entities.
The Financial Times subsequently reported documents indicating that Alibaba had provided financing to Megaspeed through subsidiaries.
That independent reporting gives additional context to the financial relationships examined by Culper.
However, a financing relationship involving Alibaba does not automatically establish illegal chip smuggling.
Financial backing, beneficial ownership, processor shipments and end-user access are different questions.
Each requires separate verification.
The central unresolved issue is whether any transactions breached applicable US export controls.
The Executive Relationship Culper Questioned Months Earlier
The May report also attracted attention for discussing Jensen Huang’s relationship with Alice Huang.
Alice Huang, also known as Huang Le, was associated with Megaspeed’s business operations.
Culper cited interviews with people it described as current or former employees of Megaspeed and Nvidia.
Those sources reportedly questioned whether the relationship between the two executives extended beyond ordinary professional dealings.
The investment firm argued that the relationship deserved closer scrutiny because of Nvidia’s commercial dealings with Megaspeed.
In November, Jensen Huang acknowledged having had an extramarital relationship and apologized to his family and colleagues.
He did not publicly identify the other person in his employee statement.
Separately, The New York Times reported that US intelligence officials suspected Alice Huang had been recruited by Chinese intelligence to collect information concerning Jensen Huang.
Those intelligence allegations remain disputed.
China has rejected the reports, and no publicly established finding proves that Jensen Huang knowingly cooperated with an intelligence operation.
Nvidia says it has no reason to believe company secrets or US national-security information were compromised.
WWC ONE MEDIA examined Beijing’s response in China Rejects Allegations Involving Nvidia CEO Jensen Huang.
The investigation is ongoing, and its outcome remains uncertain.
Nvidia Launches Independent Board Investigation
On November 8, Nvidia announced that independent directors would investigate reports concerning possible foreign intelligence targeting of its chief executive.
The review will be supported by external legal advisers.
Nvidia has expressed confidence in Huang and its management team.
Huang remains chief executive and has pledged to cooperate.
The board’s inquiry is important because it involves potential corporate-security and governance risks at one of the world’s most influential technology companies.
But the investigation is not a finding of wrongdoing.
WWC ONE MEDIA previously examined the leadership implications in Nvidia Loses Billions in Market Value as Board Investigates Jensen Huang Over Alleged Chinese Spy Links — But Could the AI Giant Lose Its Irreplaceable CEO?.
For investors, the immediate concern is whether the controversy could affect Nvidia’s leadership, relationships with customers or ability to navigate US export regulations.
The board has not announced a change in leadership.
Nvidia Shares Fall as the Short Seller Returns to the Spotlight
Bloomberg reported that Nvidia shares had declined approximately 20% from the period when Culper disclosed its short position in May.
Over that interval, the S&P 500 had gained around 2%.
The difference attracted attention because it suggested the stock had substantially underperformed the broader market.
On November 9 alone, Nvidia shares fell as much as 8.8% intraday before recovering some ground.
The stock closed at approximately $178.67, down 4.3%.
That closing decline erased roughly $190 billion in market capitalization.
But those figures do not establish how much money Culper earned.
The firm has not publicly verified the size of its original short position, the prices at which it established the trade or whether it continues holding the position.
A stock declining after a short-seller report does not guarantee the investor made a profit.
Trading costs, position changes, borrowing expenses and the timing of any exit all affect financial returns.
WWC ONE MEDIA examined the wider selloff in Nvidia’s $190 Billion Stock Rout Exposes Jensen Huang Succession Crisis Amid Alleged Chinese Spy Probe — But Who Could Replace the AI King?.
The share-price decline reflects broader market concerns as well as the company-specific controversy.
Did Culper Profit From Its Warning?
This remains one of the biggest unanswered questions.
A short seller generally borrows shares, sells them and later attempts to repurchase them at a lower price.
If the price declines sufficiently, the transaction can generate a profit.
If the stock rises instead, losses can be substantial.
Culper disclosed its short position when it published the May report.
However, Bloomberg reported that the firm had not disclosed how much money it committed or whether the position had been closed.
MarketWatch subsequently spoke with Lamarco, who expressed confidence in the firm’s research but did not disclose its trading results.
Therefore, it would be inaccurate to claim that Culper made a particular dollar amount from Nvidia’s decline.
Its early publication is documented.
Its financial outcome is not.
The Difference Between an Early Warning and Proven Allegations
Culper’s case illustrates an important challenge for financial journalism.
The firm documented its concerns several months before the November controversy.
Its report discussed Megaspeed’s financial relationships, Nvidia’s exposure to China and Jensen Huang’s association with Alice Huang.
Those earlier observations are relevant to understanding the chronology.
But a later investigation does not automatically validate every claim in the original short report.
The firm has a financial incentive for investors to become more pessimistic about Nvidia.
That incentive does not automatically make its research incorrect.
Nor does the appearance of later corroborating information establish that every allegation was accurate.
The responsible approach is to distinguish verifiable records, informed estimates, disputed allegations and confirmed government findings.
Investors should also evaluate Nvidia’s own disclosures and responses.
Could Megaspeed Be Only One Part of the Story?
MarketWatch reported that Lamarco believes other Southeast Asian companies may present similar questions about access to Nvidia technology.
He referred to potential warning signs involving at least six additional companies.
Those claims are broader than the specific Megaspeed allegations.
They remain research assertions rather than confirmed findings of illegal export activity.
Southeast Asia has become an important hub for data centers and AI infrastructure.
Singapore and Malaysia attract significant investment from technology companies seeking reliable computing facilities and regional connectivity.
Those investments are not inherently suspicious.
The regulatory challenge is ensuring that restricted technology is not transferred to prohibited destinations or made available to restricted users in violation of applicable rules.
Any enforcement action would require evidence concerning specific companies and transactions.
The US-China AI Chip War Adds Financial Risk
Nvidia’s international business is deeply affected by US-China technology competition.
Washington has imposed export restrictions on certain advanced AI chips over concerns that the technology could support military and other strategic capabilities.
Nvidia has argued that restrictive policies can encourage Chinese customers to adopt domestically produced alternatives.
Critics contend that advanced US hardware should be subject to strong controls to protect national security.
The disagreement creates significant uncertainty for technology companies.
A change in licensing requirements can affect expected sales, product development and customer relationships.
At the same time, China is investing in alternatives to American processors.
These policy and competitive pressures make Nvidia’s exposure to Chinese demand important even without the separate allegations involving Megaspeed.
WWC ONE MEDIA examined the political dimension in Trump’s Close Relationship With Nvidia CEO Jensen Huang Faces New Scrutiny as Spy Allegations Raise Questions Over US-China AI Chip Policy.
The report discusses the tension between commercial access to international markets and Washington’s national-security objectives.
Could Congress Increase Scrutiny of Nvidia?
The controversy may increase pressure on American lawmakers to strengthen enforcement of semiconductor export restrictions.
The central questions involve end-user verification, customer due diligence and monitoring the movement of advanced computing equipment.
Congress may also seek information about how government agencies handled earlier concerns involving Megaspeed.
But proposed legislation, committee inquiries and regulatory investigations are different processes.
A congressional request for information does not establish that a company committed an offense.
Likewise, an intelligence allegation does not prove that restricted chips reached prohibited users.
For Nvidia, clearer compliance practices could become increasingly important to maintaining the confidence of regulators and institutional investors.
WWC ONE MEDIA’s report Nvidia Shares Slide After Jensen Huang Probe as Alleged China Spy Links Trigger National Security Concerns provides additional context on the board investigation and broader regulatory concerns.
What Happens Next for Nvidia and Culper Research?
Several developments could determine how the controversy unfolds.
Nvidia’s independent board investigation may establish whether foreign intelligence operatives attempted to obtain information from the company.
US authorities may provide additional details about investigations involving advanced semiconductor exports.
Megaspeed and other companies named in research reports could respond with more information about financing and processor deployment.
Lawmakers may pursue additional oversight.
For Culper, the attention could strengthen the firm’s reputation if its central claims are independently corroborated.
But its credibility will also depend on the accuracy of the broader allegations and the quality of its evidence.
The company has not disclosed enough information to verify its financial return from the Nvidia short position.
The Bigger Picture: Wall Street’s AI Trade Faces a New Kind of Risk
For years, the debate surrounding Nvidia focused primarily on its valuation, growth rate, technology leadership and customers’ enormous AI spending plans.
Culper Research’s May report introduced another concern.
It questioned whether the company faced an underestimated risk involving Chinese demand, overseas intermediaries and export-control enforcement.
Six months later, those concerns have become more prominent amid a separate and highly sensitive investigation involving the company’s chief executive.
The chronology has made Culper’s warning noteworthy.
But the final outcome remains unknown.
The firm’s profit has not been established.
The intelligence allegations remain contested.
And the available evidence does not prove that Nvidia knowingly participated in illegal chip diversion.
What is clear is that regulatory compliance, international customer relationships and corporate governance have become important considerations alongside Nvidia’s technological performance.
As Culper Research’s six-month-old warning gains attention following Nvidia’s November stock decline, the biggest question is whether the firm’s investigation exposed an overlooked weakness in America’s AI chip trade—or whether the market is now treating unproven allegations as certainty in one of its most important technology stocks.
