Who has been buying PCA Corporation stock?

2 distinct investors have filed 2 disclosed large-shareholding filings in PCA Corporation (9629), most recently on 2026-04-06. 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 PCA Corporation have?

PCA Corporation has 2 buy-side and 1 sell-side disclosures on record, covering ¥109M ($703K) in total reported value, spanning 2021-04-06 to 2026-04-06.

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.

PCA Corporation 9629

Company

ピー・シー・エー株式会社PCA Corporation

Investors

Buys

Total Value

¥109M ($703K)

Avg Return

+24.54%

Last Filing

2026-04-06

PCA Corporation (9629) has 2 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 2 distinct investors. Together those filings cover ¥109M ($703K) in reported transaction value. The earliest filing StockDrifts holds for PCA Corporation is dated 2021-04-06; the most recent is 2026-04-06. Across these filings the average return since disclosure is +24.54%, 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
2026-09-18	BUY	Market Buy	株式会社UH Partners 2	passive	491.4K	¥1,574	+1.3%	¥346M ($2.2M)
2026-09-18	BUY	Market Buy	光通信株式会社	passive	1.5M	¥1,574	-	-
2026-07-29	BUY	Market Buy	光通信株式会社	passive	1.5M	¥1,444	-	-
2026-07-29	BUY	Market Buy	株式会社UH Partners 2	passive	270.7K	¥1,444	+10.4%	¥321M ($2.1M)
2026-07-08	BUY	Market Buy	光通信株式会社	passive	1.5M	¥1,398	+14.0%	¥243M ($1.6M)
2026-07-08	BUY	Market Buy	株式会社UH Partners 2	passive	48.3K	¥1,398	-	¥68M ($436K)
2026-06-16	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	1.3M	¥1,278	+24.7%	¥290M ($1.9M)
2026-05-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	1.1M	¥1,226	+30.0%	¥1.4B ($8.7M)
2026-05-21	SELL	Market Buy	マサチューセッツ・ファイナンシャル・サービセズ・カンパニー(Massachusetts Financial Services Company) Massachusetts Financial Services Company	passive	831.0K	¥1,206	-32.2%	¥366M ($2.4M)
2026-04-06	SELL	Market Buy	マサチューセッツ・ファイナンシャル・サービセズ・カンパニー(Massachusetts Financial Services Company) Massachusetts Financial Services Company	passive	1.1M	¥1,672	+4.7%	¥394M ($2.5M)
2022-04-19	BUY	unknown	株式会社Kawashima Kawashima Co.,Ltd.	activist	8.2M	¥1,538	-	-
2021-06-07	BUY	Market Buy	マサチューセッツ・ファイナンシャル・サービセズ・カンパニー(Massachusetts Financial Services Company) Massachusetts Financial Services Company	passive	479.4K	¥1,401.67	+13.7%	¥109M ($703K)
2021-04-06	BUY	Market Buy	マサチューセッツ・ファイナンシャル・サービセズ・カンパニー(Massachusetts Financial Services Company) Massachusetts Financial Services Company	passive	401.9K	¥1,279.386	+24.6%	¥514M ($3.3M)

Frequently asked questions

Who has been buying PCA Corporation stock?: 2 distinct investors have filed 2 disclosed large-shareholding filings in PCA Corporation (9629), most recently on 2026-04-06. 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 PCA Corporation have?: PCA Corporation has 2 buy-side and 1 sell-side disclosures on record, covering ¥109M ($703K) in total reported value, spanning 2021-04-06 to 2026-04-06.
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.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.