{
  "timeline": [
    {
      "date": "1998/8",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "有限会社エムシージェイを設立",
      "detail": "マウスコンピュータージャパンの製造卸部門を分社化し埼玉県春日部市にて創業",
      "significance": "MCJ創業の起点",
      "source": "有価証券報告書",
      "amount": "資本金3000千円"
    },
    {
      "date": "2000/9",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "株式会社エムシージェイに組織変更",
      "detail": "有限会社から株式会社へ",
      "significance": "株式会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/4",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "マウスコンピュータージャパンと1:1で合併",
      "detail": "旧親会社との合併",
      "significance": "グループ統合の進展",
      "source": "有価証券報告書"
    },
    {
      "date": "2003/11",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "株式会社ＭＣＪに商号変更",
      "detail": "社名変更",
      "significance": "現在の社名確立",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/6",
      "category": "株式上場",
      "region": "",
      "importance": 3,
      "event": "東京証券取引所マザーズ上場",
      "detail": "新興市場への上場",
      "significance": "株式公開達成",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/1",
      "category": "会社設立",
      "region": "",
      "importance": 1,
      "event": "株式会社ＭＣＪデジタルペリフェラルを設立",
      "detail": "グループ会社設立",
      "significance": "周辺機器事業の発足",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/4",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "株式会社シネックス（現テックウインド）の株式取得",
      "detail": "流通子会社化",
      "significance": "流通チャネル獲得",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/12",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "株式会社秀和システムの株式取得",
      "detail": "出版社の取得",
      "significance": "出版分野へ進出",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/1",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "株式会社ウェルコムと株式会社イーヤマ販売の株式取得",
      "detail": "2社買収",
      "significance": "ディスプレイ事業基盤獲得",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/2",
      "category": "企業買収|海外進出",
      "region": "欧州",
      "importance": 3,
      "event": "iiyama Benelux B.V.（現連結子会社）の株式取得",
      "detail": "イーヤマブランドの欧州拠点取得",
      "significance": "iiyamaブランドの世界展開基盤",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/10",
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "会社分割による純粋持株会社へ移行",
      "detail": "マウスコンピューター（現連結子会社）を設立",
      "significance": "持株会社体制の確立",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/10",
      "category": "会社設立",
      "region": "東南アジア",
      "importance": 1,
      "event": "株式会社iriver japanを設立",
      "detail": "アイリバー日本法人",
      "significance": "オーディオ事業展開",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/3",
      "category": "事業売却",
      "region": "",
      "importance": 1,
      "event": "株式会社ウェルコムの株式売却",
      "detail": "連結対象から除外",
      "significance": "事業整理",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/5",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "アロシステム（現ユニットコム）の株式取得",
      "detail": "PC専門店事業を獲得",
      "significance": "リテール事業強化",
      "source": "有価証券報告書"
    },
    {
      "date": "2008/10",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "マウスコンピューターがiiyamaと合併",
      "detail": "主力2社の統合",
      "significance": "主力事業の集約",
      "source": "有価証券報告書"
    },
    {
      "date": "2009/3",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "株式会社ＭＣＪパートナーズと合併",
      "detail": "グループ会社吸収",
      "significance": "組織のスリム化",
      "source": "有価証券報告書"
    },
    {
      "date": "2009/6",
      "category": "事業売却",
      "region": "",
      "importance": 1,
      "event": "FXトレード株式会社の株式売却",
      "detail": "金融事業から撤退",
      "significance": "本業集中の徹底",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/3",
      "category": "事業撤退",
      "region": "",
      "importance": 1,
      "event": "カフェスタ株式会社の清算結了",
      "detail": "SNS関連事業終了",
      "significance": "非中核事業の整理",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/3",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "ソルナック株式会社の株式取得",
      "detail": "連結子会社化",
      "significance": "事業領域の拡張",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/6",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "ユニットコムが株式会社グッドウィルの株式を取得",
      "detail": "小売事業強化",
      "significance": "リテール網拡大",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "株式会社エムヴィケーとユニティが合併し株式会社アユートに商号変更",
      "detail": "グループ再編",
      "significance": "オーディオ事業統合",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/8",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "株式会社アイエスコーポレーション（現aprecio）の株式取得",
      "detail": "ネットカフェ事業を取得",
      "significance": "新規事業領域進出",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/5",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "株式会社ワールド情報システムの株式取得",
      "detail": "連結子会社化",
      "significance": "事業ポートフォリオ拡大",
      "source": "有価証券報告書"
    },
    {
      "date": "2015/1",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "ユニットコムが株式会社コムコーポレーションの株式を取得",
      "detail": "小売店舗の取得",
      "significance": "リテール網強化",
      "source": "有価証券報告書"
    },
    {
      "date": "2015/2",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "ユニットコムがティアクラッセ株式会社の株式を取得",
      "detail": "アパレル事業取得",
      "significance": "新事業挑戦",
      "source": "有価証券報告書"
    },
    {
      "date": "2015/4",
      "category": "事業売却",
      "region": "",
      "importance": 1,
      "event": "株式会社ワールド情報システムの株式売却",
      "detail": "連結対象から除外",
      "significance": "事業整理",
      "source": "有価証券報告書"
    },
    {
      "date": "2015/8",
      "category": "株主対応",
      "region": "",
      "importance": 2,
      "event": "東京証券取引所市場第二部に市場変更",
      "detail": "マザーズから市場第二部へ移行",
      "significance": "本則市場への昇格",
      "source": "有価証券報告書"
    },
    {
      "date": "2015/12",
      "category": "事業売却",
      "region": "",
      "importance": 1,
      "event": "株式会社秀和システムの株式売却",
      "detail": "出版事業から撤退",
      "significance": "事業整理",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/4",
      "category": "事業売却",
      "region": "",
      "importance": 1,
      "event": "ティアクラッセ株式会社の株式売却",
      "detail": "連結対象から除外",
      "significance": "アパレル事業終了",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/1",
      "category": "企業買収|海外進出",
      "region": "東南アジア",
      "importance": 2,
      "event": "R-Logic International Pte Ltdの株式取得",
      "detail": "シンガポール子会社の取得",
      "significance": "東南アジア拠点獲得",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/6",
      "category": "会社設立",
      "region": "",
      "importance": 1,
      "event": "株式会社MIDを設立",
      "detail": "新会社設立",
      "significance": "事業拡張",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/7",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "ユニットコムが株式会社アークの株式を取得",
      "detail": "連結子会社化",
      "significance": "事業領域拡大",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/11",
      "category": "事業売却",
      "region": "",
      "importance": 1,
      "event": "株式会社コムコーポレーションの株式売却",
      "detail": "連結対象から除外",
      "significance": "事業整理",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "category": "株主対応",
      "region": "",
      "importance": 1,
      "event": "東京証券取引所の市場区分見直しによりスタンダード市場へ移行",
      "detail": "市場第二部からの移行",
      "significance": "新市場区分対応",
      "source": "有価証券報告書"
    }
  ]
}