Who has been buying Taki Chemical Co., Ltd. stock?

8 distinct investors have filed 14 disclosed large-shareholding filings in Taki Chemical Co., Ltd. (4025), most recently on 2026-01-19. 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 Taki Chemical Co., Ltd. have?

Taki Chemical Co., Ltd. has 14 buy-side and 12 sell-side disclosures on record, covering ¥3.6B ($23.3M) in total reported value, spanning 2021-09-07 to 2026-01-19.

Where does StockDrifts get Taki Chemical 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.

Taki Chemical Co., Ltd. 4025

Company

多木化学株式会社Taki Chemical Co., Ltd.

Investors

Buys

Total Value

¥3.6B ($23.3M)

Avg Return

-5.41%

Last Filing

2026-01-19

Taki Chemical Co., Ltd. (4025) has 14 disclosed large-shareholding filings and 12 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥3.6B ($23.3M) in reported transaction value. The earliest filing StockDrifts holds for Taki Chemical Co., Ltd. is dated 2021-09-07; the most recent is 2026-01-19. 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 -5.41%, 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
2026-07-21	BUY	Market Buy	アセット・バリュー・インベスターズ・リミテッド (Asset Value Investors Limited) Asset Value Investors Limited	activist	473.3K	¥4,915	+18.2%	¥2.3B ($15.0M)
2026-01-19	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社	other	28.5K	¥3,995	-10.0%	¥125M ($808K)
2026-01-19	BUY	negotiated	三菱UFJアセットマネジメント株式会社	passive	28.5K	¥3,995	+10.0%	¥125M ($808K)
2026-01-19	SELL	negotiated	三菱UFJ信託銀行株式会社	passive	421.3K	¥3,995	-10.0%	¥1.9B ($11.9M)
2026-01-19	BUY	negotiated	株式会社三菱UFJ銀行	strategic	120.0K	¥3,995	-10.0%	¥527M ($3.4M)
2025-12-01	BUY	Market Buy	三菱UFJモルガン・スタンレー証券株式会社	other	181.9K	¥3,730	+17.8%	¥799M ($5.2M)
2025-12-01	BUY	Market Buy	三菱UFJアセットマネジメント株式会社	passive	27.7K	¥3,730	-17.8%	¥122M ($785K)
2025-12-01	SELL	Market Buy	三菱UFJ信託銀行株式会社	passive	421.6K	¥3,730	-17.8%	¥1.9B ($12.0M)
2025-12-01	BUY	Market Buy	株式会社三菱UFJ銀行	strategic	120.0K	¥3,730	-17.8%	¥527M ($3.4M)
2025-09-01	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	81.3K	¥3,660	-20.1%	¥121M ($782K)
2025-09-01	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	27.2K	¥3,660	+20.1%	¥100M ($642K)
2025-09-01	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	439.9K	¥3,660	+20.1%	¥100M ($648K)
2025-09-01	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	120.0K	¥3,660	+20.1%	¥439M ($2.8M)
2025-01-22	SELL	unknown	三井住友カード株式会社 Sumitomo Mitsui Card Co., Ltd.	other	10.2K	¥3,325	-32.2%	¥6M ($41K)
2025-01-22	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	339.6K	¥3,325	+32.2%	¥1.1B ($7.3M)
2025-01-22	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	17.5K	¥3,325	-32.2%	¥670M ($4.3M)
2024-12-20	BUY	Market Buy	三井住友カード株式会社 Sumitomo Mitsui Card Co., Ltd.	other	12.5K	¥3,500	+25.6%	¥44M ($282K)
2024-12-20	SELL	Market Buy	SMBCファイナンスサービス株式会社 SMBC Finance Service Co., Ltd.	other	0	¥3,500	-25.6%	¥195M ($1.3M)
2024-12-20	BUY	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	218.5K	¥3,500	+25.6%	¥420M ($2.7M)
2024-12-20	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	339.6K	¥3,500	+25.6%	¥1.2B ($7.7M)
2024-07-29	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	412.5K	¥4,410	-0.3%	¥8M ($54K)
2024-07-29	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	114.0K	¥4,410	+0.3%	¥133M ($861K)
2024-07-29	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	27.2K	¥4,410	-0.3%	¥21M ($135K)
2024-07-29	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	120.0K	¥4,410	-0.3%	¥529M ($3.4M)
2022-12-22	BUY	unknown	SMBCファイナンスサービス株式会社 SMBC Finance Service Co., Ltd.	other	56.2K	¥4,700	-6.5%	¥264M ($1.7M)
2022-12-22	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	339.6K	¥4,700	-6.5%	¥1.6B ($10.3M)
2022-12-22	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	98.3K	¥4,700	-6.5%	¥462M ($3.0M)
2022-12-19	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	120.0K	¥4,865	-9.7%	¥584M ($3.8M)
2022-12-19	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	144.7K	¥4,865	-9.7%	¥469M ($3.0M)
2022-12-19	SELL	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	22.5K	¥4,865	+9.7%	¥41M ($267K)
2022-12-19	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	410.9K	¥4,865	+9.7%	¥166M ($1.1M)
2022-02-07	BUY	unknown	SMBCファイナンスサービス株式会社 SMBC Finance Service Co., Ltd.	other	56.2K	¥5,250	-16.3%	¥295M ($1.9M)
2022-02-07	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	339.6K	¥5,250	-16.3%	¥1.8B ($11.5M)
2022-02-07	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	11.0K	¥5,250	+16.3%	¥497M ($3.2M)
2022-01-11	BUY	unknown	SMBCファイナンスサービス株式会社 SMBC Finance Service Co., Ltd.	other	56.2K	¥5,620	-21.8%	¥316M ($2.0M)
2022-01-11	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	339.6K	¥5,620	-21.8%	¥1.9B ($12.3M)
2022-01-11	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	106.4K	¥5,620	+21.8%	¥553M ($3.6M)
2021-12-22	BUY	Market Buy	SMBCファイナンスサービス株式会社 SMBC Finance Service Co., Ltd.	other	56.2K	¥5,660	-22.4%	¥318M ($2.1M)
2021-12-22	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	339.6K	¥5,660	-22.4%	¥1.9B ($12.4M)
2021-12-22	BUY	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	204.1K	¥5,660	-22.4%	¥648M ($4.2M)
2021-09-07	BUY	unknown	SMBCファイナンスサービス株式会社 SMBC Finance Service Co., Ltd.	other	56.2K	¥6,500	-32.4%	¥365M ($2.4M)
2021-09-07	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	339.6K	¥6,500	-32.4%	¥2.2B ($14.2M)
2021-09-07	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	90.2K	¥6,500	-32.4%	¥586M ($3.8M)

Frequently asked questions

Who has been buying Taki Chemical Co., Ltd. stock?: 8 distinct investors have filed 14 disclosed large-shareholding filings in Taki Chemical Co., Ltd. (4025), most recently on 2026-01-19. 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 Taki Chemical Co., Ltd. have?: Taki Chemical Co., Ltd. has 14 buy-side and 12 sell-side disclosures on record, covering ¥3.6B ($23.3M) in total reported value, spanning 2021-09-07 to 2026-01-19.
Where does StockDrifts get Taki Chemical 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 Taki Chemical Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.