Who has been buying Paltac Corporation stock?

6 distinct investors have filed 4 disclosed large-shareholding filings in Paltac Corporation (8283), most recently on 2026-05-15. 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 Paltac Corporation have?

Paltac Corporation has 4 buy-side and 7 sell-side disclosures on record, covering ¥8.2B ($53.0M) in total reported value, spanning 2021-09-24 to 2026-05-15.

Where does StockDrifts get Paltac Corporation 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.

Paltac Corporation 8283

Company

株式会社PALTACPaltac Corporation

Investors

Buys

Total Value

¥8.2B ($53.0M)

Avg Return

-0.39%

Last Filing

2026-05-15

Paltac Corporation (8283) has 4 disclosed large-shareholding filings and 7 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥8.2B ($53.0M) in reported transaction value. The earliest filing StockDrifts holds for Paltac Corporation is dated 2021-09-24; the most recent is 2026-05-15. 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 -0.39%, 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
2026-07-17	BUY	acquisition	株式会社メディパルホールディングス MEDIPAL HOLDINGS CORPORATION	activist	60.6M	¥6,607	+0.3%	¥28.5B ($183.7M)
2026-07-10	BUY	acquisition	株式会社メディパルホールディングス MEDIPAL HOLDINGS CORPORATION	activist	56.3M	¥6,646	-0.2%	¥162.6B ($1.0B)
2026-06-18	SELL	unknown	エフアイエーエムエルエルシー FIAM LLC	other	254.8K	¥6,635	+0.4%	¥1.4B ($9.3M)
2026-06-18	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	629.2K	¥6,635	-0.4%	¥42M ($272K)
2026-06-18	BUY	Market Buy	エフエムアールインベストメントマネジメントユーケーリミテッドLimited) FMR Investment Management (UK	other	324.3K	¥6,635	-0.4%	¥380M ($2.4M)
2026-06-18	BUY	Market Buy	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	321.4K	¥6,635	-0.4%	¥211M ($1.4M)
2026-06-18	BUY	Market Buy	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	179.7K	¥6,635	-0.4%	¥169M ($1.1M)
2026-06-18	BUY	Market Buy	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	2.6M	¥6,635	-0.4%	¥3.8B ($24.2M)
2026-06-18	BUY	unknown	エフエムアールインベストメントマネジメントユーケーリミテッドLimited) FMR Investment Management (UK	other	324.3K	¥6,635	-0.4%	¥2.2B ($13.9M)
2026-06-18	BUY	Market Buy	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	333.0K	¥6,635	-0.4%	¥42M ($272K)
2026-06-18	BUY	Market Buy	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	182.7K	¥6,635	-0.4%	¥42M ($272K)
2026-06-18	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	745.1K	¥6,635	-0.4%	¥759M ($4.9M)
2026-06-18	BUY	Market Buy	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	3.2M	¥6,635	-0.4%	¥3.8B ($24.2M)
2026-06-18	BUY	Market Buy	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	376.0K	¥6,635	-0.4%	¥334M ($2.2M)
2026-06-18	BUY	Market Buy	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	200.1K	¥6,635	-0.4%	¥125M ($809K)
2026-06-18	SELL	unknown	エフアイエーエムエルエルシー FIAM LLC	other	716.3K	¥6,635	+0.4%	¥125M ($809K)
2026-06-18	SELL	unknown	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	2.7M	¥6,635	+0.4%	¥2.9B ($18.9M)
2026-06-18	BUY	Market Buy	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	386.0K	¥6,635	-0.4%	¥82M ($531K)
2026-06-18	SELL	unknown	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	130.7K	¥6,635	+0.4%	¥453M ($2.9M)
2026-06-18	SELL	unknown	エフアイエーエムエルエルシー FIAM LLC	other	470.9K	¥6,635	+0.4%	¥1.6B ($10.1M)
2026-06-18	SELL	unknown	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	2.3M	¥6,635	+0.4%	¥2.3B ($14.6M)
2026-06-18	SELL	unknown	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	295.1K	¥6,635	+0.4%	¥576M ($3.7M)
2026-06-18	SELL	unknown	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	108.6K	¥6,635	+0.4%	¥123M ($796K)
2026-06-18	SELL	unknown	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	836.0K	¥6,635	+0.4%	¥9.8B ($63.4M)
2026-06-09	BUY	unknown	エフエムアールインベストメントマネジメントユーケーリミテッドLimited) FMR Investment Management (UK	other	266.0K	¥6,633	+0.7%	¥1.8B ($11.4M)
2026-06-09	BUY	unknown	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	291.2K	¥6,633	+0.7%	¥1.9B ($12.5M)
2026-06-09	BUY	unknown	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	154.9K	¥6,633	+0.7%	¥1.0B ($6.6M)
2026-06-09	BUY	unknown	エフアイエーエムエルエルシー FIAM LLC	other	621.8K	¥6,633	+0.7%	¥4.1B ($26.6M)
2026-06-09	BUY	unknown	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	2.0M	¥6,633	+0.7%	¥13.5B ($87.2M)
2026-05-22	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	1.5M	¥6,630	-0.1%	¥12.0B ($77.4M)
2026-05-22	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	1.5M	¥6,630	-0.1%	¥12.0B ($77.4M)
2026-05-15	BUY	acquisition	株式会社メディパルホールディングス MEDIPAL HOLDINGS CORPORATION	activist	31.9M	¥6,631	+0.0%	¥5.2B ($33.4M)
2025-12-22	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	3.3M	¥4,858	+4.7%	¥3.1B ($19.8M)
2025-07-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	4.0M	¥4,040	-14.6%	¥2.9B ($18.6M)
2024-02-07	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	4.8M	¥4,386	+5.5%	¥3.0B ($19.6M)
2023-12-22	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	4.1M	¥4,453	+3.9%	¥3.1B ($19.9M)
2023-11-16	BUY	unknown	株式会社メディパルホールディングス MEDIPAL HOLDINGS CORPORATION	activist	31.9M	¥4,714	-1.8%	¥150.2B ($968.8M)
2023-04-21	BUY	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	3.4M	¥5,200	-11.0%	¥17.5B ($113.1M)
2023-03-29	SELL	unknown	株式会社メディパルホールディングス MEDIPAL HOLDINGS CORPORATION	activist	31.9M	¥4,990	+7.3%	¥21.9B ($141.4M)
2021-09-24	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー Capital Research and Management Company	passive	1.3M	¥5,190	+10.8%	¥660M ($4.3M)
2021-09-24	SELL	Market Buy	キャピタル・インターナショナル株式会社 Capital International Co., Ltd.	passive	971.1K	¥5,190	+10.8%	¥3.3B ($21.5M)
2021-09-24	SELL	Market Buy	キャピタル・インターナショナル・エス・エイ・アール・エル Capital International Sarl	passive	92.6K	¥5,190	+10.8%	¥396M ($2.6M)
2021-09-24	SELL	Market Buy	キャピタル・インターナショナル・インク(Capital International Capital International, Inc.	passive	74.6K	¥5,190	+10.8%	¥66M ($426K)

Frequently asked questions

Who has been buying Paltac Corporation stock?: 6 distinct investors have filed 4 disclosed large-shareholding filings in Paltac Corporation (8283), most recently on 2026-05-15. 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 Paltac Corporation have?: Paltac Corporation has 4 buy-side and 7 sell-side disclosures on record, covering ¥8.2B ($53.0M) in total reported value, spanning 2021-09-24 to 2026-05-15.
Where does StockDrifts get Paltac Corporation 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 Paltac Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.