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Saizeriya Co.,Ltd. 7581

Company
株式会社サイゼリヤSaizeriya Co.,Ltd.
Investors
5
Buys
2
Total Value
¥2.0B ($13.1M)
Avg Return
+65.83%
Last Filing
2026-04-22

Saizeriya Co.,Ltd. (7581) has 2 disclosed large-shareholding filings and 6 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥2.0B ($13.1M) in reported transaction value. The earliest filing StockDrifts holds for Saizeriya Co.,Ltd. is dated 2023-02-07; the most recent is 2026-04-22. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan). Across these filings the average return since disclosure is +65.83%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-04-22SELLunknown
正垣 泰彦
Yasuhiko Shougaki
strategic13.7M¥5,100-3.3%¥2.7B ($17.2M)
2025-01-21SELLunknown
正垣 泰彦
Yasuhiko Shougaki
strategic14.2M¥4,905-7.8%¥2.6B ($16.7M)
2024-05-08SELLunknown
正垣 泰彦
Yasuhiko Shougaki
strategic14.7M¥5,370+1.5%¥2.8B ($18.1M)
2024-02-22SELLunknown
アセットマネジメントOne株式会社
Asset Management One Co., Ltd.
other1.6M¥4,960-6.7%¥2.6B ($16.9M)
2024-02-22BUYunknown
みずほ証券 株式会社
Mizuho Securities Co., Ltd.
other59.1K¥4,960+6.7%¥293M ($1.9M)
2024-02-22SELLunknown
みずほ信託銀行株式会社
Mizuho Trust & Banking Co., Ltd.
other618.0K¥4,960-6.7%¥104M ($669K)
2023-08-30SELLunknown
株式会社バベット
Shogaki Takeshi
strategic4.2M¥4,465-18.5%¥1.1B ($7.2M)
2023-02-07BUYunknown
みずほ信託銀行株式会社
Mizuho Trust & Banking Co., Ltd.
other638.0K¥3,190+65.8%¥2.0B ($13.1M)
2023-02-07BUYunknown
アセットマネジメントOne株式会社
Asset Management One Co., Ltd.
other2.2M¥3,190+65.8%¥6.9B ($44.8M)

Frequently asked questions

Who has been buying Saizeriya Co.,Ltd. stock?
5 distinct investors have filed 2 disclosed large-shareholding filings in Saizeriya Co.,Ltd. (7581), most recently on 2026-04-22. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.
How many insider filings does Saizeriya Co.,Ltd. have?
Saizeriya Co.,Ltd. has 2 buy-side and 6 sell-side disclosures on record, covering ¥2.0B ($13.1M) in total reported value, spanning 2023-02-07 to 2026-04-22.
Where does StockDrifts get Saizeriya Co.,Ltd. insider data?
From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.
Do insider buys in Japanese stocks predict returns?
Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

Source filings

Every trade listed above is disclosed in EDINET large-shareholding (5%+) reports, filed with the Financial Services Agency (Japan). View the original EDINET filings for Saizeriya Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.