Who has been buying coly Inc. stock?

4 distinct investors have filed 1 disclosed large-shareholding filings in coly Inc. (4175), most recently on 2026-05-08. 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 coly Inc. have?

coly Inc. has 1 buy-side and 5 sell-side disclosures on record, covering ¥3.9B ($25.4M) in total reported value, spanning 2022-07-07 to 2026-05-08.

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.

coly Inc. 4175

Company

株式会社colycoly Inc.

Investors

Buys

Total Value

¥3.9B ($25.4M)

Avg Return

+43.51%

Last Filing

2026-05-08

coly Inc. (4175) has 1 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥3.9B ($25.4M) in reported transaction value. The earliest filing StockDrifts holds for coly Inc. is dated 2022-07-07; the most recent is 2026-05-08. Across these filings the average return since disclosure is +43.51%, 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
2026-05-08	BUY	unknown	株式会社 S o u t h a i r	strategic	2.8M	¥1,905	-	-
2026-05-08	BUY	unknown	中島瑞木	strategic	400.0K	¥1,905	-	-
2026-05-08	BUY	unknown	中島杏奈	strategic	400.0K	¥1,905	-	-
2026-04-17	BUY	unknown	中島杏奈 Anna Nakajima	strategic	400.0K	¥2,069	-	-
2026-04-17	SELL	unknown	中島杏奈 Anna Nakajima	strategic	400.0K	¥2,069	-44.0%	¥3.0B ($19.5M)
2025-12-04	SELL	unknown	佐々木大地 Daichi Sasaki	activist	397.8K	¥1,825	-63.3%	¥30M ($194K)
2025-12-04	BUY	unknown	佐々木大地 Daichi Sasaki	activist	397.8K	¥1,825	-	-
2024-05-16	SELL	unknown	佐々木大地 Daichi Sasaki	activist	397.8K	¥1,370	-117.5%	¥23M ($146K)
2022-07-07	BUY	unknown	株式会社 S o u t h a i r South Air Inc.	strategic	2.8M	¥1,418	-	¥3.9B ($25.4M)
2022-07-07	SELL	unknown	中島杏奈 Annna Nakajima	strategic	400.0K	¥1,418	-110.2%	¥2.1B ($13.3M)
2022-07-07	SELL	unknown	中島瑞木 Mizuki Nakajima	strategic	400.0K	¥1,418	-110.2%	¥2.1B ($13.3M)
2022-07-07	BUY	unknown	株式会社 S o u t h a i r South Air Inc.	strategic	2.8M	¥1,418	+110.2%	¥3.9B ($25.4M)

Frequently asked questions

Who has been buying coly Inc. stock?: 4 distinct investors have filed 1 disclosed large-shareholding filings in coly Inc. (4175), most recently on 2026-05-08. 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 coly Inc. have?: coly Inc. has 1 buy-side and 5 sell-side disclosures on record, covering ¥3.9B ($25.4M) in total reported value, spanning 2022-07-07 to 2026-05-08.
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.