Private company
Who owns Global Unichip Corporation (GUC)
One company in the researched set discloses a stake in Global Unichip Corporation (GUC), worth $3.16bn between them. Global Unichip Corporation (GUC) is private, so no 13F reports it: a 13F covers exchange listed positions only. These figures exist because each holder disclosed the stake in its own filings.
Global Unichip Corporation (GUC) - Profile
- Type
- private company
- Based in
- Taiwan
- Founded
- 1998
Global Unichip Corporation is a fabless ASIC design service company based in the Hsinchu Science Park in Taiwan and founded in 1998. It designs custom application specific integrated circuits for other companies and then manages the manufacturing on their behalf, covering specification and front end design, system on chip integration, physical implementation, verification, and turnkey wafer production, packaging and test. Its work concentrates on advanced nodes and advanced packaging for artificial intelligence, high performance computing, networking, automotive and storage customers, and it uses TSMC as its foundry, including TSMC packaging technologies such as CoWoS and InFO. The company is quoted on the Taiwan Stock Exchange under the code 3443 and keeps offices in North America, Japan, Korea, China and Europe.
Source
Global Unichip Corporation (GUC) files nothing with the SEC, so none of this comes from a filer record. The description was written for this site in August 2026 from Global Unichip Corporation (Wikipedia), GUC company website and TSMC value chain alliance page for GUC. The ownership figures below come from the holders' filings instead, and are sourced row by row.
The disclosed stakes
One row per position. Where a holder reports the same company in two share classes, both rows are shown rather than summed, because the class is part of a position's identity.
Where each figure comes from
A private stake has no ownership form behind it, so the source is always the holder's own filing or disclosure. Anything modelled says so, with the arithmetic.
- Taiwan Semiconductor Manufacturing Company Limited, as of 31 Dec 2025. Value is TSMC's own disclosure of the market value of its GUC stake at the 31 December 2025 closing price: NT$99,211.7 million, converted at NT$31.37 to US$1.00, the rate TSMC uses for convenience translations in the 20-F (Federal Reserve H.10, 31 December 2025). Carrying amount under the equity method was lower, NT$2,893.6 million. source
What this page is not
It is not a complete register. It lists the holders who happen to be inside the researched set and disclosed the stake themselves. A private company can have many other shareholders, and nothing here rules them out: venture investors, founders and employees usually appear in no public filing at all. Percentages are of Global Unichip Corporation (GUC) where a holder stated one, and are missing where no holder did.