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Quest Co., Ltd.
株式会社クエスト
1965-05-14
2332
TYO
Japan
System Development & Maintenance
Infrastructure Services
Business Process Outsourcing
3-1-1 Shibaura, Tamachi, Minato Ward, Tokyo 108-0023, Tamachi Station Tower N, 14F
Tomoki Kamata
491,031,000 　(4 100 million)
1,132 people
1,132 people
Company name
Group Parent Subsidiary Customer Supplier Alliance Bank Shareholder
株式会社セプト
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Group
株式会社エヌ・ケイ
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Group
NTTエレクトロニクステクノ
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
SCSK株式会社
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
オービックビジネスコンサルタント
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
クリナップ
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
クリナップテクノサービス
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
サンワサプライ
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
シャープビジネスコンピュータソフトウェア
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
シャープビジネスソリューション
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
シャープ各事業部
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
ソフトバンク・コマース
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
ダイワボウ情報システム
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
ヒサゴフォーム
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
住友相互生命保険
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
国内法人等
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
外国人・外国法人
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
大和ファンド・コンサルティング
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
寺田倉庫
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
日立プラントコンストラクション
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
株式会社スカラ
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
株式会社ユニリタ
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
清水建設
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
金融機関・証券会社
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Customer
みずほ銀行
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Bank
三井住友信託銀行株式会社
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Bank
三井住友銀行
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Bank
三菱UFJ銀行
Group company Parent Subsidiary Customer Supplier Alliance Bank, lending and credit Investment, equity and shareholders
Bank

8 entries
DateDescription
1965 Quest Co., Ltd. was founded in 1965, during the early days of the information services industry.
1965 Started in 1965, during the nascent period of the information services industry.
2002 Listed on the JASDAQ market (now the Tokyo Stock Exchange Standard Market).
2023 In 2023, we achieved the highest rating 'SE☆☆☆'—the first in the information and communications industry—through the Service Excellence SE (ISO 23592 compliant) maturity assessment.
2023 In 2023, we achieved the highest rating 'SE☆☆☆'—the first in the information and communications industry—through the Service Excellence SE (ISO 23592 compliant) maturity assessment.
2025 In 2025, we celebrated our 60th anniversary of founding.
2025 Celebrated our 60th anniversary.
2026 In 2026, we celebrated 61 years of founding. Since our inception, we have grown without any deficit, building a sound financial structure.
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2026-09-22 14:47 (Model: gpt-4.1-nano )
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