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Platz Co., Ltd. 7813

Company
株式会社プラッツPlatz Co., Ltd.
Investors
7
Buys
9
Total Value
¥1.5B ($9.4M)
Avg Return
-15.91%
Last Filing
2025-12-11

Platz Co., Ltd. (7813) has 9 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥1.5B ($9.4M) in reported transaction value. The earliest filing StockDrifts holds for Platz Co., Ltd. is dated 2021-03-18; the most recent is 2025-12-11. Across these filings the average return since disclosure is -15.91%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2025-12-11BUYMarket Buy
株式会社CARPE DIEM
CARPE DIEM CORPORATION
activist228.4K¥810+11.1%¥185M ($1.2M)
2025-12-11BUYMarket Buy
株式会社CARPE DIEM
CARPE DIEM CORPORATION
activist228.4K¥810-¥34M ($216K)
2025-11-12BUYMarket Buy
株式会社CARPE DIEM
CARPE DIEM CORPORATION
activist187.1K¥830+8.4%¥155M ($1.0M)
2025-05-21BUYunknown
株式会社EKS
EKS Co., Ltd.
strategic551.3K¥744--
2025-05-21SELLunknown
福山 恵美子
Emiko Fukuyama
strategic85.0K¥744-21.0%¥132M ($851K)
2025-05-21BUYunknown
福山 明利
AKITOSHI FUKUYAMA
other108.0K¥744--
2025-05-21SELLunknown
福山 明利
AKITOSHI FUKUYAMA
other430.0K¥744-21.0%¥33M ($215K)
2025-05-21SELLunknown
株式会社EKS
EKS Co., Ltd.
strategic400.0K¥744-21.0%¥8M ($50K)
2025-05-21SELLunknown
福山 恵美子
Emiko Fukuyama
strategic262.4K¥744-21.0%¥5M ($34K)
2025-02-07SELLunknown
みずほ証券 株式会社
Mizuho Securities Co., Ltd.
unknown0¥629-43.1%¥111M ($717K)
2025-02-07BUYunknown
みずほ信託銀行株式会社
Mizuho Trust & Banking Co., Ltd.
other170.1K¥629+43.1%¥106M ($684K)
2024-07-05BUYunknown
みずほ証券 株式会社
Mizuho Securities Co., Ltd.
other176.5K¥742+21.3%¥131M ($845K)
2024-07-05BUYunknown
みずほ信託銀行株式会社
Mizuho Trust & Banking Co., Ltd.
other170.5K¥742+21.3%¥127M ($816K)
2024-04-02BUYnegotiated
ベトナム プレシジョン インダストリアル カンパニー リミテッド
VIETNAM PRECISION INDUSTRIAL Co ., LTD.,
strategic284.4K¥692--
2024-03-26BUYunknown
福山 恵美子
Emiko Fukuyama
strategic262.4K¥677--
2024-03-26BUYunknown
株式会社EKS
EKS Co., Ltd.
strategic551.3K¥677--
2024-03-26BUYunknown
福山 明利
AKITOSHI FUKUYAMA
other108.0K¥677--
2024-03-26BUYunknown
株式会社EKS
EKS Co., Ltd.
strategic551.3K¥677--
2024-03-26BUYunknown
福山 明利
AKITOSHI FUKUYAMA
other108.0K¥677--
2024-03-26BUYunknown
福山 明利
AKITOSHI FUKUYAMA
other108.0K¥677--
2024-03-26BUYunknown
福山 恵美子
Emiko Fukuyama
strategic262.4K¥677--
2024-03-26BUYunknown
福山 恵美子
Emiko Fukuyama
strategic262.4K¥677--
2024-03-26BUYunknown
株式会社EKS
EKS Co., Ltd.
strategic551.3K¥677--
2024-03-25BUYunknown
福山 明利
AKITOSHI FUKUYAMA
other108.0K¥675--
2024-03-25BUYunknown
福山 明利
AKITOSHI FUKUYAMA
other108.0K¥675--
2024-03-25BUYunknown
株式会社EKS
EKS Co., Ltd.
unknown551.3K¥675--
2024-03-25BUYunknown
株式会社EKS
EKS Co., Ltd.
unknown551.3K¥675--
2021-10-05BUYunknown
福山 明利
AKITOSHI FUKUYAMA
other108.0K¥1,212--
2021-10-05BUYunknown
株式会社EKS
EKS Co., Ltd.
strategic551.3K¥1,212--
2021-10-05BUYunknown
福山 恵美子
Emiko Fukuyama
strategic262.4K¥1,212--
2021-10-05BUYunknown
株式会社EKS
EKS Co., Ltd.
strategic551.3K¥1,212--
2021-10-05BUYunknown
福山 恵美子
Emiko Fukuyama
strategic262.4K¥1,212--
2021-10-05BUYunknown
福山 明利
AKITOSHI FUKUYAMA
other108.0K¥1,212--
2021-06-22SELLunknown
福山 明利
AKITOSHI FUKUYAMA
other108.0K¥1,692+46.8%¥256M ($1.7M)
2021-06-22BUYunknown
福山 恵美子
Emiko Fukuyama
strategic262.4K¥1,692--
2021-06-22SELLunknown
福山 明利
AKITOSHI FUKUYAMA
other108.0K¥1,692+46.8%¥256M ($1.7M)
2021-06-22BUYunknown
株式会社EKS
EKS Co., Ltd.
strategic551.3K¥1,692-46.8%¥256M ($1.7M)
2021-06-22BUYunknown
株式会社EKS
EKS Co., Ltd.
strategic551.3K¥1,692-46.8%¥256M ($1.7M)
2021-06-22BUYunknown
福山 恵美子
Emiko Fukuyama
strategic262.4K¥1,692--
2021-05-28BUYunknown
株式会社EKS
EKS Co., Ltd.
strategic551.3K¥1,729-48.0%¥262M ($1.7M)
2021-05-28BUYMarket Buy
株式会社EKS
EKS Co., Ltd.
strategic551.3K¥1,729-48.0%¥262M ($1.7M)
2021-05-28SELLMarket Buy
福山 明利
AKITOSHI FUKUYAMA
strategic108.0K¥1,729+48.0%¥262M ($1.7M)
2021-05-28SELLunknown
福山 明利
AKITOSHI FUKUYAMA
strategic108.0K¥1,729+48.0%¥262M ($1.7M)
2021-05-28BUYMarket Buy
福山 恵美子
Emiko Fukuyama
strategic262.4K¥1,729--
2021-05-28BUYunknown
福山 恵美子
Emiko Fukuyama
strategic262.4K¥1,729--
2021-03-18BUYunknown
福山 明利
AKITOSHI FUKUYAMA
other259.3K¥1,396.963-¥301M ($1.9M)
2021-03-18BUYunknown
福山 明利
AKITOSHI FUKUYAMA
other259.3K¥1,396.963-¥238M ($1.5M)
2021-03-18SELLunknown
福山 明利
AKITOSHI FUKUYAMA
other259.3K¥1,396.963+35.6%¥301M ($1.9M)

Frequently asked questions

Who has been buying Platz Co., Ltd. stock?
7 distinct investors have filed 9 disclosed large-shareholding filings in Platz Co., Ltd. (7813), most recently on 2025-12-11. 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 Platz Co., Ltd. have?
Platz Co., Ltd. has 9 buy-side and 10 sell-side disclosures on record, covering ¥1.5B ($9.4M) in total reported value, spanning 2021-03-18 to 2025-12-11.
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.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.