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.

Where does StockDrifts get SpiderPlus & Co. 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.

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. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan). 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	BUY	unknown	伊藤謙自 Ito Kenji	activist	17.0M	¥282	-5.7%	¥599M ($3.9M)
2026-06-03	SELL	unknown	伊藤謙自 Ito Kenji	activist	17.0M	¥282	+5.7%	¥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	-14.8%	¥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	-24.8%	¥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	-45.8%	¥284M ($1.8M)
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	+51.8%	¥26M ($170K)
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	-51.8%	¥228M ($1.5M)
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	+61.7%	¥347M ($2.2M)
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	-41.9%	¥54M ($346K)
2023-05-10	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	21.2K	¥520	+41.9%	¥3M ($22K)
2023-04-13	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥529	+42.9%	¥42M ($274K)
2023-04-04	BUY	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥551	-45.2%	¥10.3B ($66.8M)
2023-04-03	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥568	+46.8%	¥107M ($688K)
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	-44.5%	¥56M ($362K)
2023-03-23	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	2.7M	¥544	-44.5%	¥1.5B ($9.6M)
2023-03-14	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥525	+42.5%	¥174M ($1.1M)
2022-12-22	SELL	unknown	Joho Capital, L.L.C.	other	2.3M	¥680	+55.6%	¥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	-57.8%	¥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	-57.8%	¥28M ($183K)
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	+54.0%	¥6M ($39K)
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	-54.0%	¥287M ($1.9M)
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	-54.0%	-
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	-55.1%	¥621M ($4.0M)
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	-55.1%	¥660M ($4.3M)
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	-55.1%	-
2022-06-27	BUY	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥377	-19.9%	¥7.1B ($45.7M)
2022-06-21	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥373	+19.0%	¥6M ($41K)
2022-05-25	BUY	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥461	-34.5%	¥8.7B ($55.9M)
2022-05-20	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	unknown	0	¥468	+35.5%	¥1.2B ($8.0M)
2022-05-17	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥430	+29.8%	¥61M ($394K)
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	+45.2%	¥28M ($179K)
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	-45.2%	¥39M ($250K)
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	+45.2%	¥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	-45.2%	¥584M ($3.8M)
2022-04-04	BUY	Market Buy	Joho Capital, L.L.C.	other	2.7M	¥809	-62.7%	¥466M ($3.0M)
2022-04-04	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥809	+62.7%	¥8M ($53K)
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	-55.4%	¥34M ($218K)
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	+55.4%	¥161M ($1.0M)
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	-55.4%	¥27M ($175K)
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	+55.4%	¥161M ($1.0M)
2022-03-14	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥709	+57.4%	¥33M ($215K)
2022-02-16	BUY	Market Buy	Joho Capital, L.L.C.	other	2.1M	¥972	-68.9%	¥429M ($2.8M)
2022-02-14	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥950	+68.2%	¥16M ($102K)
2022-02-10	BUY	unknown	Joho Capital, L.L.C.	other	1.7M	¥1,022	-70.5%	¥1.7B ($11.2M)
2022-01-11	SELL	unknown	伊藤謙自 Ito Kenji	activist	18.8M	¥1,175	+74.3%	¥212M ($1.4M)
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	-74.3%	¥4M ($25K)
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	-74.3%	¥101M ($649K)
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	+74.3%	¥16M ($101K)
2021-11-04	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	384.5K	¥1,959	+84.6%	¥19M ($125K)
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	-84.6%	¥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.
Where does StockDrifts get SpiderPlus & Co. 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 SpiderPlus & Co.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.