Who has been buying Cacco Inc. stock?

7 distinct investors have filed 11 disclosed large-shareholding filings in Cacco Inc. (4166), most recently on 2026-02-12. 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 Cacco Inc. have?

Cacco Inc. has 11 buy-side and 28 sell-side disclosures on record, covering ¥164M ($1.1M) in total reported value, spanning 2021-07-15 to 2026-02-12.

Where does StockDrifts get Cacco Inc. 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.

Cacco Inc. 4166

Company

かっこ株式会社Cacco Inc.

Investors

Buys

Total Value

¥164M ($1.1M)

Avg Return

-35.10%

Last Filing

2026-02-12

Cacco Inc. (4166) has 11 disclosed large-shareholding filings and 28 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥164M ($1.1M) in reported transaction value. The earliest filing StockDrifts holds for Cacco Inc. is dated 2021-07-15; the most recent is 2026-02-12. 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 -35.10%, 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
2026-02-12	SELL	subscription	亀山誠 MAKOTO KAMEYAMA	strategic	209.6K	¥775	+9.7%	¥21M ($138K)
2025-06-05	SELL	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	465.0K	¥689	-1.6%	¥2M ($15K)
2025-06-05	SELL	unknown	岩井裕之 Hiroyuki Iwai	activist	449.6K	¥689	-1.6%	¥19M ($123K)
2025-03-31	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	62.9K	¥626	+11.8%	¥6M ($40K)
2025-03-31	SELL	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	40.3K	¥626	-11.8%	¥27M ($173K)
2024-07-30	BUY	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	83.1K	¥748	-6.4%	¥62M ($401K)
2024-07-30	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	53.1K	¥748	-6.4%	¥40M ($256K)
2024-06-19	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	47.1K	¥764	+8.4%	¥3M ($21K)
2024-06-19	SELL	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	83.1K	¥764	+8.4%	¥1M ($8K)
2024-03-21	BUY	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	465.0K	¥733	-4.5%	¥341M ($2.2M)
2024-03-21	SELL	unknown	岩井裕之 Hiroyuki Iwai	activist	473.6K	¥733	+4.5%	¥18M ($114K)
2024-03-15	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	50.5K	¥727	-3.7%	¥37M ($237K)
2024-03-15	BUY	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	83.1K	¥727	-3.7%	¥60M ($390K)
2024-03-12	SELL	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	465.0K	¥731	+4.2%	¥18M ($114K)
2024-03-12	SELL	unknown	岩井裕之 Hiroyuki Iwai	activist	503.3K	¥731	+4.2%	¥4M ($26K)
2024-01-11	SELL	unknown	中沢雄太 Yuta Nakazawa	strategic	232.5K	¥848	+17.4%	¥20M ($129K)
2024-01-11	BUY	unknown	中沢雄太 Yuta Nakazawa	strategic	232.5K	¥848	-17.4%	¥20M ($129K)
2023-04-20	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	38.8K	¥1,314	+46.7%	¥16M ($105K)
2023-04-20	SELL	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	83.1K	¥1,314	+46.7%	¥49M ($315K)
2023-03-30	SELL	unknown	関根健太郎 KENTARO SEKINE	activist	47.9K	¥881	+20.5%	¥76M ($491K)
2023-03-30	BUY	unknown	関根健太郎 KENTARO SEKINE	activist	47.9K	¥881	-20.5%	¥76M ($491K)
2023-01-30	SELL	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	476.8K	¥1,130	+38.0%	¥595K ($4K)
2023-01-30	SELL	unknown	岩井裕之 Hiroyuki Iwai	activist	499.3K	¥1,130	+38.0%	¥595K ($4K)
2022-12-26	SELL	unknown	岩井裕之 Hiroyuki Iwai	activist	499.3K	¥998	+29.9%	¥263K ($2K)
2022-12-26	BUY	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	476.8K	¥998	-29.9%	¥476M ($3.1M)
2022-12-16	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	51.1K	¥1,170	-40.2%	¥2M ($14K)
2022-12-16	SELL	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	120.1K	¥1,170	+40.2%	¥33M ($214K)
2022-11-28	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	49.2K	¥1,270	-44.9%	¥22M ($144K)
2022-11-28	SELL	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	148.5K	¥1,270	+44.9%	¥59M ($384K)
2022-09-26	BUY	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	476.8K	¥1,580	-55.7%	¥753M ($4.9M)
2022-09-26	SELL	unknown	岩井裕之 Hiroyuki Iwai	activist	499.5K	¥1,580	+55.7%	¥1M ($8K)
2022-09-15	BUY	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	476.8K	¥1,534	-54.4%	¥731M ($4.7M)
2022-09-15	SELL	unknown	岩井裕之 Hiroyuki Iwai	activist	500.3K	¥1,534	+54.4%	¥4M ($29K)
2022-02-25	BUY	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	476.8K	¥1,671	-58.1%	¥797M ($5.1M)
2022-02-25	BUY	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	476.8K	¥1,671	-58.1%	¥797M ($5.1M)
2022-02-25	BUY	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	476.8K	¥1,671	-58.1%	¥797M ($5.1M)
2022-02-25	BUY	unknown	岩井裕之 Hiroyuki Iwai	activist	503.2K	¥1,671	-58.1%	¥841M ($5.4M)
2022-02-25	BUY	unknown	岩井裕之 Hiroyuki Iwai	activist	503.2K	¥1,671	-58.1%	¥841M ($5.4M)
2022-02-25	BUY	unknown	岩井裕之 Hiroyuki Iwai	activist	503.2K	¥1,671	-58.1%	¥841M ($5.4M)
2022-02-18	SELL	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	476.8K	¥1,731	+59.6%	¥3M ($18K)
2022-02-18	SELL	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	476.8K	¥1,731	+59.6%	¥3M ($18K)
2022-02-18	SELL	unknown	岩井裕之 Hiroyuki Iwai	activist	503.2K	¥1,731	+59.6%	¥28M ($182K)
2022-02-18	SELL	unknown	岩井裕之 Hiroyuki Iwai	activist	503.2K	¥1,731	+59.6%	¥28M ($182K)
2021-12-23	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	31.5K	¥2,141	-67.3%	¥11M ($72K)
2021-12-23	SELL	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	194.9K	¥2,141	+67.3%	¥562K ($4K)
2021-07-15	BUY	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	476.8K	¥2,810	-75.1%	¥7M ($48K)
2021-07-15	BUY	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	476.8K	¥2,810	-75.1%	¥7M ($48K)
2021-07-15	BUY	unknown	Symbolキャピタル合同会社 Symbol Capital LLC	activist	476.8K	¥2,810	-75.1%	¥7M ($48K)
2021-07-15	SELL	unknown	岩井裕之 Hiroyuki Iwai	activist	518.2K	¥2,810	+75.1%	¥21M ($138K)
2021-07-15	SELL	unknown	岩井裕之 Hiroyuki Iwai	activist	518.2K	¥2,810	+75.1%	¥21M ($138K)

Showing the 50 most recent of 51 filings.

Frequently asked questions

Who has been buying Cacco Inc. stock?: 7 distinct investors have filed 11 disclosed large-shareholding filings in Cacco Inc. (4166), most recently on 2026-02-12. 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 Cacco Inc. have?: Cacco Inc. has 11 buy-side and 28 sell-side disclosures on record, covering ¥164M ($1.1M) in total reported value, spanning 2021-07-15 to 2026-02-12.
Where does StockDrifts get Cacco Inc. 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 Cacco Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.