Who owns Theory?
Theory is owned by Fast Retailing (Japan, TSE: 9983), which has owned the brand since 1 March 2009.[1] Theory was founded in 1997 in New York and was independent until 2009.
This ownership is reported in official statements but has not yet been matched to a regulatory filing.
Key facts
- Current owner
- Fast Retailing Co., Ltd. reported
- Owned since
- Previous owner
- Independent (1997–2009)
- Owner HQ
- 🇯🇵 Japan, Yamaguchi
- Origin
- 🇺🇸 United States, New York
- Founded
- 1997
- Category
- Apparel, footwear & accessories › Fashion apparel › Casual & denim
- Parent ticker
- TSE: 9983
- Last verified
- · 1 sources
About Theory
Theory was founded in New York in 1997 and built on stretch fabrics in tailored shapes for professional women. Fast Retailing acquired the business in stages, completing full ownership in 2009. It was the Japanese group's first significant purchase outside its own market and sits far above Uniqlo on price.
Ownership timeline of Theory
- 2009 – present Fast Retailing [1] reported
Where Theory sits in Fast Retailing
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
Open the full Fast Retailing ownership tree →
Other brands owned by Fast Retailing in apparel, footwear & accessories
Latest news about Theory
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Frequently asked questions
Who is the parent company of Theory?
The parent company of Theory is Fast Retailing, a publicly listed company headquartered in Japan.
Is Theory American or Japanese?
Theory originated in the United States in 1997, but it is owned today by Fast Retailing, which is headquartered in Japan. So Theory is an American-origin brand under Japanese ownership.
Since when has Fast Retailing owned Theory?
Fast Retailing has owned Theory since 1 March 2009.
Who owned Theory before Fast Retailing?
Theory was an independent company from its founding in 1997 in New York until Fast Retailing acquired it in 2009.
Is Theory still owned by Fast Retailing?
Yes. As of 6 September 2026, Theory is still owned by Fast Retailing. The ownership record was last checked against primary sources on that date.
Sources (1) & corrections
Last verified . Every ownership fact above is backed by one of these primary documents. Numbers in brackets in the text refer to this list.
- [1] Fast Retailing Co., Ltd. Annual Report 2025 — Fast Retailing Co., Ltd., Annual report, published 28 November 2025; retrieved 6 September 2026.
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