DOJ Reported to Open Antitrust Probe of Nvidia and Investigate Supermicro and Megaspeed Over Alleged Chip Smuggling to China

• Dispatched: Nov 12, 2026 · 22:38 ET (Nov 13, 03:38 UTC)

One-sentence summary: The US Justice Department was reported to be running three Nvidia-related inquiries — an antitrust investigation of Nvidia itself and two more covering Megaspeed and Supermicro, examining whether entities linked to Alice Huang helped smuggle Supermicro products into China — as Supermicro shares closed down 11.30% and Nvidia fell 4.34% on the day.

Verification status: ⚠ Single-source reporting, not yet confirmed (Single-source / Unconfirmed) — Semafor cited two administration officials and Bloomberg cited a person familiar with the matter; Nvidia and the Justice Department did not comment, and Supermicro said it is cooperating fully with the investigation

Core Facts & Consensus Delta:

• Publication: Semafor reported at 11:40 ET / 16:40 UTC on 2026-11-12; Bloomberg's report on the Manhattan US Attorney's inquiry was published at 15:10 ET / 20:10 UTC on 2026-11-12.
• Three inquiries: according to Semafor, citing two administration officials, the Justice Department is pursuing three inquiries — one focused specifically on Nvidia's business practices on antitrust grounds, and two others involving Megaspeed and Supermicro, examining the role of Alice Huang. The report said there was no indication prosecutors intend to bring criminal charges against Nvidia or Jensen Huang at this time.
• Supermicro's response: Supermicro denied ever selling products to Megaspeed, saying Megaspeed is not and has never been a Supermicro customer; the company also said it is cooperating fully with the investigation.
• Smuggling inquiry: according to Bloomberg, citing a person familiar with the matter, the US Attorney's Office in Manhattan is examining whether entities linked to Alice Huang helped smuggle Supermicro products into China; it is unclear whether that inquiry is tied to chip-smuggling cases prosecutors have already brought. Bloomberg said Huang himself is not a target of US law-enforcement investigations.
• Market reaction: Supermicro (SMCI) closed at $26.99 on 2026-11-12, down 11.30% from the prior close of $30.43, after falling about 12% intraday; Nvidia (NVDA) closed at $166.19, down 4.34%, after falling about 14% intraday.
• Background: on 2026-03-19, federal prosecutors charged Supermicro co-founder Yih-Shyan Liaw and two others with conspiring to divert servers carrying Nvidia H200 and B200 chips to China through a Southeast Asian front company, in a scheme valued at about $2.5 billion; Supermicro itself was not charged and has said it was a victim of the scheme. Supermicro disclosed in a quarterly filing that it received a grand jury subpoena seeking documents on its compliance programme and internal controls.

Supply-Chain & Market Read-Through:

• Supermicro is a major Nvidia AI server partner, and its servers carry Nvidia accelerators; if the smuggling inquiries into Supermicro and Megaspeed widen, export-compliance scrutiny of AI servers and accelerators routed through third countries will tighten, and cloud providers and Neocloud operators may raise the bar on procurement and compliance.
• An antitrust investigation of Nvidia running alongside export-control inquiries means regulatory pressure has extended from congressional hearings into Justice Department enforcement; Nvidia's third-quarter results on 2026-11-17 and the closed-door congressional briefing on 2026-11-18 will be the next points at which the market tests the company's compliance statements and governance direction.
• The direct business link to HBM and memory makers (SK Hynix KRX: 000660, Samsung Electronics KRX: 005930, Micron MU, SanDisk SNDK) is limited, but any further tightening of export controls could affect Chinese AI firms' access to rented compute capacity overseas, and in turn the marginal outlook for AI chip and memory demand.
• Strictly objective and neutral; no share-price forecast or buy/sell advice.

Next Catalysts & Watchpoints:

• Nvidia's third-quarter results (after the close on 2026-11-17, call at 17:00 ET / 22:00 UTC), to test interim CEO Colette Kress's statements on the investigations and export compliance.
• The date for Jensen Huang's testimony before Congress ahead of Thanksgiving, and the closed-door depositions scheduled for 2026-12-01 (Huang) and 2026-12-02 (Nvidia's general counsel), to test whether the congressional inquiry intersects with the Justice Department's work.
• Senator Bennet's request for a written update on the Megaspeed investigation by 2026-11-24, to test whether the scope of the inquiries becomes clearer.
• Any formal confirmation, charge or denial from the Justice Department or Supermicro, to verify the actual scope and legal consequences of the three inquiries.

Sources:

• Semafor (via Seeking Alpha): Nvidia becomes target of DOJ probes along with Supermicro and Megaspeed (Published: 11:40 ET / 16:40 UTC on 2026-11-12)
• Bloomberg (via Stocktwits): Supermicro, Nvidia reportedly face DOJ scrutiny in separate inquiries (Published: 12:58 ET / 17:58 UTC on 2026-11-12)
• Bloomberg (via AIStockWire): US probes Alice Huang over Super Micro smuggling (Published: 15:10 ET / 20:10 UTC on 2026-11-12)

Information only, not investment advice.