Who has been buying SpiderPlus & Co. stock?

14 distinct investors have filed 28 disclosed large-shareholding filings in SpiderPlus & Co. (4192), most recently on 2026-03-23. 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 SpiderPlus & Co. have?

SpiderPlus & Co. has 28 buy-side and 27 sell-side disclosures on record, covering ¥41.0B ($264.6M) in total reported value, spanning 2021-04-02 to 2026-03-23.

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.

SpiderPlus & Co. 4192

Company

スパイダープラス株式会社SpiderPlus & Co.

Investors

Buys

Total Value

¥41.0B ($264.6M)

Avg Return

-66.80%

Last Filing

2026-03-23

SpiderPlus & Co. (4192) has 28 disclosed large-shareholding filings and 27 disclosed disposals on record, filed by 14 distinct investors. Together those filings cover ¥41.0B ($264.6M) in reported transaction value. The earliest filing StockDrifts holds for SpiderPlus & Co. is dated 2021-04-02; the most recent is 2026-03-23. Across these filings the average return since disclosure is -66.80%, 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
2026-06-03	SELL	unknown	伊藤謙自 Ito Kenji	activist	17.0M	¥282	-11.3%	¥599M ($3.9M)
2026-06-03	BUY	unknown	伊藤謙自 Ito Kenji	activist	17.0M	¥282	-	¥599M ($3.9M)
2026-06-01	BUY	unknown	株式会社インフォマート Infomart Corporation	strategic	7.4M	¥290	+8.3%	¥2.1B ($13.8M)
2026-03-23	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー(Baillie Gifford & Co) Baillie Gifford & Co	other	2.3M	¥242	-29.8%	¥124M ($798K)
2024-05-22	BUY	Market Buy	ベイリー・ギフォード・アンド・カンパニー(Baillie Gifford & Co) Baillie Gifford & Co	other	2.8M	¥557	-43.6%	¥284M ($1.8M)
2023-12-06	BUY	Market Buy	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	2.3M	¥626	-49.8%	¥228M ($1.5M)
2023-12-06	SELL	Market Buy	ベイリー・ギフォード・オーバーシーズ・リミテッド Baillie Gifford Overseas Limited	other	0	¥626	+49.8%	¥26M ($170K)
2023-06-09	SELL	Market Buy	クープランド・カーディフ・アセット・マネジメント・エルエルピー(Coupland Cardiff Asset Management LLP) Coupland Cardiff Asset Management LLP	passive	1.7M	¥788	+60.1%	¥347M ($2.2M)
2023-05-10	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	21.2K	¥520	+39.6%	¥3M ($22K)
2023-05-10	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	103.1K	¥520	-	-
2023-04-13	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥529	+40.6%	¥42M ($274K)
2023-04-04	BUY	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥551	-	-
2023-04-03	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥568	+44.7%	¥107M ($688K)
2023-03-23	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	2.7M	¥544	-42.3%	¥1.5B ($9.6M)
2023-03-23	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	103.1K	¥544	-42.3%	¥56M ($362K)
2023-03-14	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥525	+40.2%	¥174M ($1.1M)
2022-12-22	SELL	unknown	Joho Capital, L.L.C.	other	2.3M	¥680	+53.8%	¥332M ($2.1M)
2022-10-21	BUY	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	1.9M	¥715	-56.1%	¥1.3B ($8.6M)
2022-10-21	BUY	unknown	ベイリー・ギフォード・オーバーシーズ・リミテッド Baillie Gifford Overseas Limited	other	39.6K	¥715	-56.1%	¥28M ($183K)
2022-09-06	BUY	unknown	ゴールドマン・サックス証券株式会社 Goldman Sachs Japan Co.,Ltd.	other	0	¥657	-	-
2022-09-06	BUY	unknown	ゴールドマン・サックス・インターナショナル Goldman Sachs International	other	445.3K	¥657	-52.2%	¥287M ($1.9M)
2022-09-06	SELL	unknown	ゴールドマン・サックス・アンド・カンパニー・エルエルシー Goldman Sachs & Co. LLC	other	0	¥657	+52.2%	¥6M ($39K)
2022-08-19	BUY	unknown	ゴールドマン・サックス証券株式会社 Goldman Sachs Japan Co.,Ltd.	other	0	¥673	-53.3%	-
2022-08-19	BUY	unknown	ゴールドマン・サックス・インターナショナル Goldman Sachs International	other	980.6K	¥673	-53.3%	¥660M ($4.3M)
2022-08-19	BUY	unknown	ゴールドマン・サックス・アンド・カンパニー・エルエルシー Goldman Sachs & Co. LLC	other	922.2K	¥673	-53.3%	¥621M ($4.0M)
2022-06-27	BUY	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥377	-	-
2022-06-21	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥373	+15.8%	¥6M ($41K)
2022-05-25	BUY	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥461	-	-
2022-05-20	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	unknown	0	¥468	+32.9%	¥1.2B ($8.0M)
2022-05-17	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥430	+27.0%	¥61M ($394K)
2022-05-06	SELL	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	29.6K	¥551	+43.0%	¥54M ($346K)
2022-05-06	BUY	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	1.1M	¥551	-43.0%	¥584M ($3.8M)
2022-05-06	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	226.4K	¥551	-43.0%	¥39M ($250K)
2022-05-06	SELL	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・エルエルシー J.P. Morgan Securities LLC	other	800	¥551	+43.0%	¥28M ($179K)
2022-04-04	BUY	Market Buy	Joho Capital, L.L.C.	other	2.7M	¥809	-61.2%	¥466M ($3.0M)
2022-04-04	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥809	+61.2%	¥8M ($53K)
2022-03-18	SELL	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	1.4M	¥677	+53.6%	¥161M ($1.0M)
2022-03-18	SELL	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	153.0K	¥677	+53.6%	¥161M ($1.0M)
2022-03-18	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・エルエルシー J.P. Morgan Securities LLC	other	49.9K	¥677	-	¥34M ($218K)
2022-03-18	BUY	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	126.5K	¥677	-53.6%	¥27M ($175K)
2022-03-14	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥709	+55.7%	¥33M ($215K)
2022-02-16	BUY	Market Buy	Joho Capital, L.L.C.	other	2.1M	¥972	-67.7%	¥429M ($2.8M)
2022-02-14	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥950	+67.0%	¥16M ($102K)
2022-02-10	BUY	unknown	Joho Capital, L.L.C.	other	1.7M	¥1,022	-69.3%	¥1.7B ($11.2M)
2022-01-11	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥1,175	+73.3%	¥212M ($1.4M)
2022-01-05	SELL	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	1.6M	¥1,176	+73.3%	¥16M ($101K)
2022-01-05	BUY	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	85.6K	¥1,176	-	¥101M ($649K)
2022-01-05	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	389.1K	¥1,176	-73.3%	¥4M ($25K)
2021-11-04	SELL	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	1.6M	¥1,959	+84.0%	¥6M ($42K)
2021-11-04	BUY	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	2.8K	¥1,959	-84.0%	¥648M ($4.2M)

Showing the 50 most recent of 72 filings.

Frequently asked questions

Who has been buying SpiderPlus & Co. stock?: 14 distinct investors have filed 28 disclosed large-shareholding filings in SpiderPlus & Co. (4192), most recently on 2026-03-23. 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 SpiderPlus & Co. have?: SpiderPlus & Co. has 28 buy-side and 27 sell-side disclosures on record, covering ¥41.0B ($264.6M) in total reported value, spanning 2021-04-02 to 2026-03-23.
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.