Who has been buying Taisei Oncho Co., Ltd. stock?

7 distinct investors have filed 6 disclosed large-shareholding filings in Taisei Oncho Co., Ltd. (1904), most recently on 2024-12-23. 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 Taisei Oncho Co., Ltd. have?

Taisei Oncho Co., Ltd. has 6 buy-side and 12 sell-side disclosures on record, covering ¥283M ($1.8M) in total reported value, spanning 2021-04-05 to 2024-12-23.

Where does StockDrifts get Taisei Oncho 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.

Taisei Oncho Co., Ltd. 1904

Company

大成温調株式会社Taisei Oncho Co., Ltd.

Investors

Buys

Total Value

¥283M ($1.8M)

Avg Return

+114.00%

Last Filing

2024-12-23

Taisei Oncho Co., Ltd. (1904) has 6 disclosed large-shareholding filings and 12 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥283M ($1.8M) in reported transaction value. The earliest filing StockDrifts holds for Taisei Oncho Co., Ltd. is dated 2021-04-05; the most recent is 2024-12-23. 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 +114.00%, 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
2024-12-23	SELL	unknown	水谷日出夫 MIZUTANI HIDEO	strategic	156.3K	¥3,675	-41.0%	¥1.1B ($6.8M)
2024-12-23	SELL	unknown	水谷日出夫 MIZUTANI HIDEO	strategic	1.1M	¥3,675	-41.0%	¥368M ($2.4M)
2024-09-30	SELL	unknown	大成温調取引先持株会理事長高橋洋 Hiroshi Takahashi	strategic	513.6K	¥4,035	-28.4%	¥330M ($2.1M)
2024-06-06	SELL	Market Buy	エーピーアイピー・インク(APIP, Inc.) APIP, Inc.	passive	131.7K	¥4,165	-24.4%	¥1.0B ($6.6M)
2024-06-04	SELL	Market Buy	エーピーアイピー・インク(APIP, Inc.) APIP, Inc.	passive	381.7K	¥4,235	-22.3%	¥1.0B ($6.7M)
2024-05-27	BUY	Market Buy	エーピーアイピー・インク(APIP, Inc.) APIP, Inc.	passive	631.7K	¥4,390	+18.0%	¥112M ($721K)
2024-04-03	SELL	Market Buy	エーピーアイピー・インク(APIP, Inc.) APIP, Inc.	passive	649.6K	¥4,260	-21.6%	¥302M ($1.9M)
2024-03-14	SELL	Market Buy	エーピーアイピー・インク(APIP, Inc.) APIP, Inc.	passive	726.4K	¥5,220	+0.8%	¥2.6B ($16.5M)
2024-02-28	BUY	Market Buy	エーピーアイピー・インク(APIP, Inc.) APIP, Inc.	passive	1.3M	¥5,350	-3.2%	¥479M ($3.1M)
2023-12-22	SELL	unknown	大成温調取引先持株会理事長高橋洋 Hiroshi Takahashi	strategic	595.0K	¥4,375	-18.4%	¥307M ($2.0M)
2023-08-25	SELL	unknown	大成温調取引先持株会理事長高橋洋 Hiroshi Takahashi	strategic	665.5K	¥2,255	-129.7%	¥163M ($1.1M)
2022-07-07	BUY	Market Buy	エーピーアイピー・インク(APIP, Inc.) APIP, Inc.	passive	1.3M	¥1,871	+176.9%	¥85M ($548K)
2022-05-27	SELL	negotiated	ダルトン・インベストメンツ・エルエルシー(Dalton Investments LLC) Dalton Investments LLC	activist	89.3K	¥1,824	-184.0%	¥618M ($4.0M)
2021-12-03	BUY	unknown	アクアウェッジ株式会社 AQUA WEDGE CO.,LTD.	activist	993.0K	¥1,908	+171.5%	¥1.9B ($12.2M)
2021-11-22	SELL	negotiated	ダルトン・インベストメンツ・エルエルシー(Dalton Investments LLC) Dalton Investments LLC	activist	427.9K	¥1,907	-171.6%	¥131M ($847K)
2021-10-20	BUY	Market Buy	アクアウェッジ株式会社 AQUA WEDGE CO.,LTD.	activist	993.0K	¥1,958	+164.6%	¥81M ($522K)
2021-04-19	BUY	Market Buy	エーピーアイピー・インク(APIP, Inc.) APIP, Inc.	passive	1.2M	¥1,956	+164.8%	¥2.3B ($15.1M)
2021-04-05	SELL	unknown	大成温調株式会社 TAISEI ONCHO CO., LTD.	unknown	0	¥1,970	-162.9%	¥1.2B ($7.8M)
2021-04-05	BUY	Market Buy	大成温調取引先持株会理事長高橋洋 Hiroshi Takahashi	strategic	738.0K	¥1,970	+162.9%	¥91M ($586K)

Frequently asked questions

Who has been buying Taisei Oncho Co., Ltd. stock?: 7 distinct investors have filed 6 disclosed large-shareholding filings in Taisei Oncho Co., Ltd. (1904), most recently on 2024-12-23. 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 Taisei Oncho Co., Ltd. have?: Taisei Oncho Co., Ltd. has 6 buy-side and 12 sell-side disclosures on record, covering ¥283M ($1.8M) in total reported value, spanning 2021-04-05 to 2024-12-23.
Where does StockDrifts get Taisei Oncho 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 Taisei Oncho Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.