{"year":2001,"count":25,"generatedAt":"2026-07-16T20:20:13.770Z","updatedAt":"2026-07-16T20:20:13.770Z","detailCount":25,"coverage":{"status":"source_limited","statusLabel":"確認ソース限定","coverageLabel":"確認可能な公開ソースで照合できたTOB関連明細を掲載。金融庁の公開買付届出書提出件数は、自己株式TOBを除く参考統計としてカバレッジ欄に分離する。","expectedCount":null,"expectedNonSelfTenderCount":28,"expectedJapaneseNonSelfTenderCount":null,"expectedCountsAreReferenceOnly":true,"countBasis":"金融庁資料の公開買付届出書提出件数（自己株式TOBを除く）は参照用の外部統計とし、サイト明細は確認済みの案件単位で表示。","sourceSystemCount":25,"verifiedDetailCount":25,"verifiedNonSelfTenderDetailCount":22,"verifiedJapaneseNonSelfTenderDetailCount":21,"verifiedForeignNonSelfTenderDetailCount":1,"referenceDetailDelta":null,"referenceNonSelfTenderDelta":6,"referenceJapaneseNonSelfTenderDelta":null,"sourceLimitations":["金融庁資料の件数目安は自己株式TOBを除く公開買付届出書提出件数として扱い、外国対象TOBは非自己株TOBの総数に含めた上で国内対象とは内訳を分けて表示する。","M&A Online TOBプレミアムはページ上で2006年以降の全TOB情報を対象とするため、2000-2005年の明細は別ソースで補完する。","楽天証券の公開買付銘柄アーカイブは2003年8月以降の現行ページスナップショットと2004年・2005年の年次ページを確認できるが、2000年-2003年前半の同形式一覧は確認できない。","日本政策投資銀行設備投資研究所の「日本のM&A」は2000年代前半の株式公開買付表を含むが、イベントスタディ対象の上場企業案件に限定されるため、金融庁の公開買付届出書提出件数とは母集団が一致しない。","野村資本市場研究所の自社株公開買付資料は2001年9月末までの自己株式TOBの件数・特徴を確認できるが、個別銘柄名簿は本文中に掲載されていないため、自己株式TOBの明細は会社開示で確認できたものから追加する。","関西大学リポジトリ収録の自己株買い研究は2002年・2003年の自己株式公開買付サンプル件数を確認できるが、個別銘柄名簿は本文中に掲載されていないため、自己株式TOBの明細は会社開示で確認できたものから追加する。","2000年代前半はオンラインで一括取得できる一次開示の永続URLが限られるため、会社リリース、研究機関資料、報道アーカイブで確認済みの案件から段階的に追加する。"],"notes":["MBO型TOBの初期事例と大型の日本テレコムTOBを補完。","事業会社による友好的TOBを公式リリース、対象会社開示、報道アーカイブで追加。","日本企業が買付者となった海外対象TOBは、国内の公開買付届出書件数とは別枠で補完。","オリエント時計の2001年子会社化は、公開買付けによる追加取得が2008年であることを確認したため、2001年TOB一覧から除外。","池田物産は上場廃止日が2001年1月だが、公開買付開始は2000年7月のため2000年一覧に収録。","日本ストローの沿革・上場廃止系ソースは、三陽パックス/Solo Cup案件と同一系統として2001年4月の公開買付明細に統合。","野村資本市場研究所の市場記録で確認できる関西メンテナンス、エトナヘイワ生命、シーシーアイは現行明細に収録済み。","西友とサニーの資本関係は、2001年カレンダー系ソースに子会社化表現がある一方、公開買付けとして確認できる同社関連の取得は2004年以降のため2001年TOB実績から除外。","ジャパン・エア・ガシズ沿革のBOC Group plc公開買付は大阪酸素工業/日本BOC案件として収録済み。サークルK・サンクス経営統合など株式移転・合併型の再編はTOB実績から除外。","内閣府の対日直接投資資料でもVodafoneによる日本テレコムTOBを確認。2000年から2002年の同資料内でTOB表記がある候補は現行明細に収録済み。","マネックスメール本文で確認できる2001年TOB言及（ピープル、マイカルカード、東燃ゼネラル石油、シーシーアイ、マンダム、クレイフィッシュ、日本テレコム、キリウなど）は現行明細に収録済み。","野村資本市場研究所の自社株公開買付資料では2001年9月末までの累計133件（利益消却目的114件、ストックオプション目的19件）を確認できるが、個別銘柄名簿は掲載されていない。2001年の自己株式TOB明細は会社開示・報道で確認できた東燃ゼネラル石油とマンダムを収録。","レコフデータと公開買付届出書等を手作業で補完した学術データベースでは2001年のTOB全サンプルは18件で、金融庁の届出書提出件数28件より少ない。公開ソースで確認できる案件単位明細を優先する。","DBJの株式公開買付表、EDINET DB沿革抽出、会社沿革・報道で個別案件を照合。"],"sources":[{"title":"活性化し始めたわが国MBOの現状と課題","url":"https://www.nicmr.com/nicmr/report/repo/2001/2001aut16.pdf","source":"野村資本市場研究所","kind":"reference","confidence":"high"},{"title":"最大21.7%の日本テレコム株式友好的公開買付けを発表","url":"https://www.jreast.co.jp/press/2001_1/20010917/index.html","source":"JR東日本","kind":"official","confidence":"high"},{"title":"平成17年度 対日直接投資促進策等に関する調査研究","url":"https://www.cao.go.jp/invest-japan/documents/archive/files/h17.pdf","source":"内閣府","kind":"reference","confidence":"high"},{"title":"Announcement of Tender Offer","url":"https://www.investegate.co.uk/announcement/rns/konami-group-corporation--knm/tender-offer-/251191","source":"KONAMI / 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