What Atom does

Atom Corporation (株式会社アトム) is a publicly traded Japanese restaurant chain operator headquartered in Yokohama's Landmark Tower, listed on the Tokyo Stock Exchange Standard Market (TYO: 7412) and the Nagoya Stock Exchange Main Market. Founded in 1972 in Fukui Prefecture as a sushi business tracing back to 1965, Atom currently operates a diversified portfolio of casual dining brands under the Colowide Group umbrella, including rotating sushi (Nigiri no Tokubei / にぎりの徳兵衛), fresh seafood (Kaisen Atom / 海鮮アトム), steak (Steak Miya / ステーキ宮), yakiniku (Karubi Taisho / カルビ大将), charcoal-grilled meat (Ganko-en / がんこ炎), and Japanese cuisine (Nenya / 寧々家). The company serves individual consumers across the Tohoku, North Kanto, Tokai, and Hokuriku regions of Japan through directly managed and franchised locations.

Atom generates revenue primarily through in-restaurant dining transactions, complemented by franchise royalties, takeout orders via its dedicated atom-takeout.com platform, and shareholder benefit point redemptions integrated with the Colowide Group. Distribution channels include owned physical storefronts, franchise partners, and an e-commerce takeout reservation system, with marketing driven by seasonal fairs, limited-time menus, and community events. Operationally, the company emphasizes food safety through metal detectors and X-ray inspection equipment, regional ingredient partnerships (notably with Fukui Prefecture), and food waste reduction initiatives supported by improved sales forecasting. The company is a consolidated subsidiary of Colowide Co., Ltd., and is led by President and Representative Director Tsuyoshi Ueda (植田 剛史).

Recent strategic positioning has focused on store-level execution in the Tokai region, governance reform tied to TSE Standard Market migration in 2022, and divestiture of non-core subsidiaries (Atom Hokkaido in 2020, Atom Wowifoods in 2022). The company discloses capital cost awareness with stated targets of ROE above 8% and ROIC above 6%, while reported FY March 2025 metrics show ROE of -27.5% and ROIC of 0.2%, signaling material profitability pressure despite continued unit expansion.

Name

Atom

Legal name

株式会社アトム

Website

https://atom-corp.co.jp

Company type

Public

Founded year

1972

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Atom Corporation is a publicly listed Japanese restaurant chain operator and Colowide Group subsidiary running multi-brand casual dining concepts (rotating sushi, seafood, steak, yakiniku) across the Tohoku, North Kanto, Tokai, and Hokuriku regions, serving individual consumers through directly managed and franchised locations.

Ownership category

akta.pro rank

Headquarters

HQ city

Sendai

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Operations, Personnel, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. Restaurant Operations (Direct): Atom generates revenue through directly operated restaurant locations across multiple brands including rotating sushi (にぎりの徳兵衛), seafood (海鮮アトム), yakiniku (カルビ大将), and steak (ステーキ宮) chains, serving customers in Tohoku, North Kanto, Tokai, and Hokuriku regions.
2. Franchise (FC) Restaurant Operations: The company operates and expands its restaurant chains through a franchise (FC) model, with franchisees operating locations under Atom's established brand concepts.
3. Takeout and Delivery Services: Atom offers takeout services through its dedicated takeout website (atom-takeout.com), allowing customers to order food for pickup. Takeout orders can be paid by credit card or at the store upon pickup.
4. Shareholder Benefit Points: Shareholders receive benefit points (1 point = 1 yen) which can be used for dining at Atom and Colowide Group restaurants, or exchanged for gift products including regional specialties from across Japan.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

Atom Corporation is a Japanese restaurant chain operator that directly manages and franchises multiple casual dining brands across the Tohoku, North Kanto, Tokai, and Hokuriku regions. Its restaurant concepts include conveyor belt sushi (にぎりの徳兵衛), fresh seafood (海鮮アトム), steak and hamburger (ステーキ宮), yakiniku/BBQ (カルビ大将, がんこ炎), and Japanese cuisine (寧々家), supplemented by a takeout online reservation service.

Product overview

株式会社アトム is a restaurant chain operator managing multiple dining brands. The company operates a portfolio of restaurant concepts including conveyor belt sushi (にぎりの徳兵衛), fresh seafood restaurants (海鮮アthm), steakhouse chains (ステーキ宮), yakiniku/BBQ restaurants (カルビ大将, がんこ炎). The company focuses on family dining and casual restaurants across the Tohoku, North Kanto, Tokai, and Hokuriku regions of Japan, operating both directly-managed stores and franchise locations.

Differentiator

Problem solved

Functional benefit

Brands

• にぎりの徳兵衛: Rotating sushi restaurant chain
• 海鮮アトム
• カルビ大将
• ステーキ宮
• がんこ炎
• 寧々家

Products and services

• にぎりの徳兵衛 (Nigiri no Tokubei)

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Five partnerships are on record, tiered minor and core.

• Fukui Blow Winds (福井ブローウィンズ)minorGTM or Marketing Partner · 2 September 2025Atom became an official partner of the Fukui Blow Winds professional basketball club, which is the first professional basketball team in Fukui Prefecture. Atom supports the team as an official partner, demonstrating its commitment to regional community activities in Fukui.
• Fukui Prefecture (福井県)coreStrategic or Co-development PartnerAtom has entered into an industry revitalization partnership agreement with Fukui Prefecture. This collaboration involves joint initiatives such as special classes and lectures at Fukui University and Fukui Prefecture agricultural high schools, promoting regional food culture and contributing to local economic development. The company also sources and features Fukui Prefecture regional ingredients in its restaurants, including local seafood products.
• Fukui University (福井大学)coreStrategic or Co-development PartnerUnder the partnership agreement with Fukui Prefecture, Atom conducts special lectures at Fukui University's International and Regional Studies Faculty, contributing to regional talent development and food industry education.
• Fukui Prefecture Agricultural High Schools (福井県立高校・福井県立福井農林高校)coreStrategic or Co-development PartnerAtom conducts special classes and lectures at Fukui Prefecture agricultural high schools, including Fukui Prefecture Fukui Agricultural and Forestry High School's Food Distribution Department, as part of the industry revitalization partnership with Fukui Prefecture.
• Colowide Group (コロワイドグループ)coreOthersAtom is a consolidated subsidiary of Colowide Group, a major Japanese restaurant and hospitality group. Atom's shareholder benefits are integrated with the broader Colowide Group shareholder benefit system, allowing points to be redeemed at various group restaurants nationwide. Atom's stock is listed under the Colowide Group umbrella.

Scale indicators5 records

Recent moves11 records

Expansion highlights6 records

Direct peers

• Saizeriya: Operates a national casual Italian dining chain with strong price-value positioning in Japan. Comparable to Atom as a value-oriented casual dining operator targeting family segments in regional Japanese markets.
• Skylark Holdings: One of Japan's largest casual dining groups operating family restaurant and specialty chains (e.g., Gusto, Jonathan's, Yumean). Comparable to Atom as a multi-brand casual dining chain operator with national footprint in Japan.
• Joyfull: Operates a value-oriented family restaurant chain across Japan. Comparable to Atom in casual family dining positioning and Japanese regional market focus.
• Zensho Holdings: Major Japanese restaurant group operating Sukiya (gyudon), Coco's (family restaurant), and other casual dining chains. Comparable to Atom in multi-brand restaurant chain operation and Japanese market scale.
• Genki Sushi: Operates a rotating sushi chain with significant international footprint. Comparable to Atom's Tokubei rotating sushi brand in category and product offering.
• Watami: Operates izakaya-style casual dining chains across Japan. Comparable to Atom in casual Japanese dining concepts, regional Japanese footprint, and franchise/owned store mix.
• Kura Sushi: Leading rotating sushi (kaiten-zushi) chain in Japan with national footprint. Directly comparable to Atom's にぎりの徳兵衛 rotating sushi brand in category, customer segment, and operating model.
• Plenus: Operates Italian/Kitchen Japan family restaurant chains. Comparable to Atom as a multi-brand casual dining operator with strong value positioning in Japan's regional markets.
• Hiday Hidaka (Royal Host): Operates Royal Host family restaurant and Jonathan's chains in Japan. Comparable to Atom in casual family dining category with regional Japanese presence.

Broad incumbents

• Colowide Co., Ltd. Atom's parent company and one of Japan's largest restaurant/hospitality conglomerates (operating Kappa Sushi, Reins International, etc.). Comparable as a broader incumbent in the same restaurant group space with overlapping concepts (notably Kappa Sushi competing with Atom's Tokubei brand).

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/atomcorporation

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Atom