Who has been buying Ibis Inc. stock?

4 distinct investors have filed 3 disclosed large-shareholding filings in Ibis Inc. (9343), most recently on 2026-02-25. 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 Ibis Inc. have?

Ibis Inc. has 3 buy-side and 16 sell-side disclosures on record, covering ¥1.6B ($10.4M) in total reported value, spanning 2023-03-24 to 2026-02-25.

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.

Ibis Inc. 9343

Company

株式会社アイビスIbis Inc.

Investors

Buys

Total Value

¥1.6B ($10.4M)

Avg Return

+29.32%

Last Filing

2026-02-25

Ibis Inc. (9343) has 3 disclosed large-shareholding filings and 16 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥1.6B ($10.4M) in reported transaction value. The earliest filing StockDrifts holds for Ibis Inc. is dated 2023-03-24; the most recent is 2026-02-25. Across these filings the average return since disclosure is +29.32%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-02-25	SELL	negotiated	村上和彦 Kazuhiko Murakami	activist	1.4M	¥621	-28.8%	¥191M ($1.2M)
2026-02-25	SELL	negotiated	神谷栄治	activist	7.9M	¥621	-28.8%	¥209M ($1.4M)
2026-02-25	SELL	negotiated	株式会社リオライト	activist	1.0M	¥621	-28.8%	¥3M ($22K)
2026-02-25	SELL	negotiated	神谷栄治	activist	7.9M	¥621	-28.8%	¥209M ($1.4M)
2026-02-25	SELL	negotiated	株式会社リオライト	activist	1.0M	¥621	-28.8%	¥3M ($22K)
2025-05-27	SELL	negotiated	神谷栄治 Eiji Kamiya	activist	1.6M	¥610	-31.1%	¥117M ($756K)
2025-05-27	BUY	negotiated	株式会社リオライト Rio Light Co., Ltd.	activist	200.0K	¥610	-	¥122M ($787K)
2025-03-12	BUY	negotiated	神谷栄治 Eiji Kamiya	activist	1.8M	¥640	-	-
2025-02-20	SELL	negotiated	神谷栄治 Eiji Kamiya	activist	1.8M	¥595.2	-34.4%	¥32M ($204K)
2024-12-03	SELL	negotiated	神谷栄治 Eiji Kamiya	activist	1.9M	¥670	-19.4%	¥1M ($8K)
2024-08-22	SELL	negotiated	村上和彦 Kazuhiko Murakami	activist	343.7K	¥731	-9.4%	¥57M ($371K)
2024-08-21	BUY	negotiated	神谷栄治 Eiji Kamiya	activist	1.9M	¥730	-	-
2024-08-20	SELL	negotiated	村上和彦 Kazuhiko Murakami	activist	423.7K	¥756	-5.8%	¥7M ($46K)
2024-08-08	SELL	negotiated	神谷栄治 Eiji Kamiya	activist	1.9M	¥580.8	-37.7%	¥2M ($12K)
2024-07-10	SELL	negotiated	神谷栄治 Eiji Kamiya	activist	1.9M	¥839	+4.7%	¥2M ($16K)
2024-05-22	SELL	negotiated	神谷栄治 Eiji Kamiya	activist	1.9M	¥715	-11.9%	¥3M ($17K)
2024-04-19	BUY	unknown	渡辺秀行 Hideyuki Watanabe	other	172.9K	¥656	-	¥19M ($120K)
2024-04-19	BUY	unknown	渡辺秀行 Hideyuki Watanabe	other	172.9K	¥656	-	¥19M ($120K)
2024-04-19	BUY	unknown	渡辺秀行 Hideyuki Watanabe	other	172.9K	¥656	-	¥19M ($120K)
2024-02-26	SELL	negotiated	神谷栄治 Eiji Kamiya	activist	1.9M	¥699	-14.4%	¥156M ($1.0M)
2023-12-15	SELL	negotiated	村上和彦 Kazuhiko Murakami	activist	429.7K	¥293.2	-172.8%	¥51M ($331K)
2023-11-17	SELL	negotiated	村上和彦 Kazuhiko Murakami	activist	606.7K	¥315	-154.0%	¥11M ($72K)
2023-03-28	BUY	negotiated	神谷栄治 Eiji Kamiya	activist	2.0M	¥566	+41.3%	¥1.2B ($7.4M)
2023-03-28	BUY	negotiated	村上和彦 Kazuhiko Murakami	activist	619.7K	¥566	+41.3%	¥351M ($2.3M)
2023-03-24	BUY	unknown	渡辺秀行 Hideyuki Watanabe	other	192.9K	¥524.2	+52.6%	¥101M ($652K)

Frequently asked questions

Who has been buying Ibis Inc. stock?: 4 distinct investors have filed 3 disclosed large-shareholding filings in Ibis Inc. (9343), most recently on 2026-02-25. 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 Ibis Inc. have?: Ibis Inc. has 3 buy-side and 16 sell-side disclosures on record, covering ¥1.6B ($10.4M) in total reported value, spanning 2023-03-24 to 2026-02-25.
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.