Who has been buying Oomitsu Co., Ltd. stock?

5 distinct investors have filed 0 disclosed large-shareholding filings in Oomitsu Co., Ltd. (3160), most recently on 2026-03-26. 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 Oomitsu Co., Ltd. have?

Oomitsu Co., Ltd. has 0 buy-side and 8 sell-side disclosures on record, spanning 2021-06-02 to 2026-03-26.

Where does StockDrifts get Oomitsu 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.

Oomitsu Co., Ltd. 3160

Company

株式会社大光Oomitsu Co., Ltd.

Investors

Buys

Total Value

—

Avg Return

—

Last Filing

2026-03-26

Oomitsu Co., Ltd. (3160) has 0 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 5 distinct investors. The earliest filing StockDrifts holds for Oomitsu Co., Ltd. is dated 2021-06-02; the most recent is 2026-03-26. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan).

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-06-04	BUY	unknown	株式会社KYR	activist	1.6M	¥566	+0.3%	¥934M ($6.0M)
2026-06-04	BUY	negotiated	金森武	activist	420.0K	¥566	+0.3%	¥238M ($1.5M)
2026-03-26	SELL	unknown	金森智 Kanamori satosi	activist	570.0K	¥579	-3.1%	¥131M ($845K)
2026-03-18	BUY	negotiated	株式会社H2A	activist	768.0K	¥583	-2.4%	¥458M ($3.0M)
2026-03-18	BUY	negotiated	金森久	activist	400.0K	¥583	-2.4%	¥239M ($1.5M)
2026-03-18	BUY	negotiated	株式会社KYR	activist	1.6M	¥583	-2.4%	¥985M ($6.4M)
2026-03-18	BUY	negotiated	金森武	activist	420.0K	¥583	-2.4%	¥251M ($1.6M)
2025-12-26	BUY	negotiated	株式会社H2A	activist	768.0K	¥555	-7.6%	¥458M ($3.0M)
2025-12-26	BUY	negotiated	株式会社H2A	activist	768.0K	¥555	-7.6%	¥458M ($3.0M)
2025-12-26	SELL	negotiated	金森久	activist	400.0K	¥555	-7.6%	¥239M ($1.5M)
2025-12-26	BUY	negotiated	株式会社KYR	activist	1.6M	¥555	-7.6%	¥985M ($6.4M)
2025-12-26	SELL	negotiated	金森武	activist	420.0K	¥555	-7.6%	¥251M ($1.6M)
2025-12-26	SELL	negotiated	金森久	activist	400.0K	¥555	-7.6%	¥239M ($1.5M)
2025-12-26	BUY	negotiated	株式会社KYR	activist	1.6M	¥555	-7.6%	¥985M ($6.4M)
2025-12-26	SELL	negotiated	金森武	activist	420.0K	¥555	-7.6%	¥251M ($1.6M)
2025-12-03	BUY	negotiated	金森武 kanamori takesi	activist	2.1M	¥563	+6.0%	¥1.2B ($7.5M)
2025-06-05	SELL	negotiated	金森武 kanamori takesi	activist	2.1M	¥549	-8.7%	¥18M ($116K)
2023-03-22	SELL	negotiated	金森武 kanamori takesi	activist	2.1M	¥593	-0.7%	¥277M ($1.8M)
2023-03-14	BUY	negotiated	金森武 kanamori takesi	activist	2.3M	¥597	+0.0%	¥1.4B ($9.0M)
2023-03-14	SELL	negotiated	金森久 Kanamori Hisashi	activist	1.2M	¥597	+0.0%	¥82M ($528K)
2023-03-14	BUY	unknown	金森智 Kanamori satosi	activist	720.0K	¥597	+0.0%	¥430M ($2.8M)
2022-12-02	BUY	negotiated	金森武 kanamori takesi	activist	2.3M	¥665	-10.2%	¥1.5B ($10.0M)
2021-12-03	BUY	negotiated	金森武 kanamori takesi	activist	2.3M	¥676	-11.7%	¥1.6B ($10.2M)
2021-06-02	BUY	negotiated	金森武 kanamori takesi	activist	2.3M	¥674	-11.4%	¥1.6B ($10.1M)

Frequently asked questions

Who has been buying Oomitsu Co., Ltd. stock?: 5 distinct investors have filed 0 disclosed large-shareholding filings in Oomitsu Co., Ltd. (3160), most recently on 2026-03-26. 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 Oomitsu Co., Ltd. have?: Oomitsu Co., Ltd. has 0 buy-side and 8 sell-side disclosures on record, spanning 2021-06-02 to 2026-03-26.
Where does StockDrifts get Oomitsu 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 Oomitsu Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.