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O.B.System Inc. 5576

Company
株式会社オービーシステムO.B.System Inc.
Investors
4
Buys
4
Total Value
¥4.2B ($26.9M)
Avg Return
-5.81%
Last Filing
2025-07-29

O.B.System Inc. (5576) has 4 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥4.2B ($26.9M) in reported transaction value. The earliest filing StockDrifts holds for O.B.System Inc. is dated 2023-06-27; the most recent is 2025-07-29. Across these filings the average return since disclosure is -5.81%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2025-07-29BUYunknown
株式会社ニュードリーム
New Dream Co., Ltd.
strategic200.0K¥2,880-¥576M ($3.7M)
2025-07-29SELLunknown
山田 孝
Takashi Yamada
strategic555.0K¥2,880-4.1%¥576M ($3.7M)
2024-03-26BUYunknown
山田 孝
Takashi Yamada
strategic755.0K¥2,640+13.5%¥2.0B ($12.7M)
2024-03-26SELLunknown
山田 慶子
Keiko Yamada
unknown0¥2,640-13.5%¥178M ($1.1M)
2023-06-27BUYunknown
株式会社オービック
OBIC Co.,Ltd.
corporate660.0K¥3,025-0.9%¥2.0B ($12.9M)
2023-06-27BUYunknown
山田 孝
Takashi Yamada
activist755.0K¥3,025-0.9%¥2.3B ($14.7M)
2023-06-27BUYunknown
山田 慶子
Keiko Yamada
activist65.0K¥3,025-0.9%¥197M ($1.3M)

Frequently asked questions

Who has been buying O.B.System Inc. stock?
4 distinct investors have filed 4 disclosed large-shareholding filings in O.B.System Inc. (5576), most recently on 2025-07-29. 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 O.B.System Inc. have?
O.B.System Inc. has 4 buy-side and 2 sell-side disclosures on record, covering ¥4.2B ($26.9M) in total reported value, spanning 2023-06-27 to 2025-07-29.
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.