Who has been buying Cocorport, Inc. stock?

11 distinct investors have filed 22 disclosed large-shareholding filings in Cocorport, Inc. (9346), most recently on 2025-09-29. 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 Cocorport, Inc. have?

Cocorport, Inc. has 22 buy-side and 6 sell-side disclosures on record, covering ¥12.5B ($80.4M) in total reported value, spanning 2023-04-07 to 2025-09-29.

Where does StockDrifts get Cocorport, Inc. 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.

Cocorport, Inc. 9346

Company

株式会社ココルポートCocorport, Inc.

Investors

Buys

Total Value

¥12.5B ($80.4M)

Avg Return

-55.17%

Last Filing

2025-09-29

Cocorport, Inc. (9346) has 22 disclosed large-shareholding filings and 6 disclosed disposals on record, filed by 11 distinct investors. Together those filings cover ¥12.5B ($80.4M) in reported transaction value. The earliest filing StockDrifts holds for Cocorport, Inc. is dated 2023-04-07; the most recent is 2025-09-29. 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 -55.17%, 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
2026-06-05	SELL	unknown	SMBC日興証券株式会社	other	300	¥1,669	+3.3%	¥17M ($107K)
2026-06-05	SELL	Market Buy	三井住友DSアセットマネジメント株式会社	passive	144.9K	¥1,669	+3.3%	¥60M ($388K)
2026-05-21	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	225.1K	¥1,654	+0.1%	¥61M ($396K)
2025-09-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	189.9K	¥1,946	-14.4%	¥5M ($33K)
2025-09-03	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	186.1K	¥1,630	+2.1%	¥303M ($2.0M)
2024-11-08	BUY	unknown	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	178.7K	¥1,541	+8.1%	¥275M ($1.8M)
2024-11-08	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	10.2K	¥1,541	+8.1%	¥16M ($101K)
2024-03-01	SELL	unknown	佐原敦矢 Atsuya Sahara	strategic	145.0K	¥2,285	+27.1%	¥89M ($576K)
2024-03-01	SELL	unknown	佐原敦矢 Atsuya Sahara	strategic	145.0K	¥2,285	+27.1%	¥89M ($576K)
2024-03-01	SELL	unknown	株式会社A&Cコーポレーション A&C Corporation Co,Ltd.	strategic	383.1K	¥2,285	+27.1%	¥40M ($261K)
2024-03-01	SELL	unknown	株式会社A&Cコーポレーション A&C Corporation Co,Ltd.	strategic	383.1K	¥2,285	+27.1%	¥40M ($261K)
2023-05-22	SELL	unknown	ビーオブエー・セキュリティーズ・インク(BofA Securities BofA Securities, Inc.	other	0	¥5,170	+67.8%	¥179M ($1.2M)
2023-05-22	BUY	unknown	メリルリンチ・インターナショナル Merrill Lynch International	other	121.4K	¥5,170	-67.8%	¥617M ($4.0M)
2023-05-10	BUY	unknown	ビーオブエー・セキュリティーズ・インク(BofA Securities BofA Securities, Inc.	other	200	¥5,990	-72.2%	¥1M ($8K)
2023-05-10	BUY	unknown	メリルリンチ・インターナショナル Merrill Lynch International	other	194.4K	¥5,990	-72.2%	¥1.2B ($7.5M)
2023-05-02	BUY	unknown	佐原敦矢 Atsuya Sahara	strategic	180.0K	¥6,230	-73.3%	¥1.1B ($7.2M)
2023-05-02	BUY	unknown	佐原敦矢 Atsuya Sahara	strategic	180.0K	¥6,230	-73.3%	¥1.1B ($7.2M)
2023-05-02	BUY	unknown	株式会社A&Cコーポレーション A&C Corporation Co,Ltd.	strategic	383.1K	¥6,230	-73.3%	¥2.4B ($15.4M)
2023-05-02	SELL	unknown	株式会社A&Cコーポレーション A&C Corporation Co,Ltd.	strategic	383.1K	¥6,230	+73.3%	¥872M ($5.6M)
2023-04-18	BUY	unknown	佐原敦矢 Atsuya Sahara	strategic	180.0K	¥5,460	-69.5%	¥983M ($6.3M)
2023-04-18	BUY	unknown	株式会社A&Cコーポレーション A&C Corporation Co,Ltd.	strategic	523.0K	¥5,460	-69.5%	¥2.9B ($18.4M)
2023-04-10	BUY	unknown	岩元勝志 Katsushi Iwamoto	strategic	20.0K	¥5,150	-67.7%	¥103M ($665K)
2023-04-10	BUY	unknown	長尾吉祐 Yoshisuke Nagao	strategic	137.2K	¥5,150	-67.7%	¥707M ($4.6M)
2023-04-10	BUY	unknown	長尾吉祐 Yoshisuke Nagao	strategic	137.2K	¥5,150	-67.7%	¥707M ($4.6M)
2023-04-10	BUY	unknown	佐原敦矢 Atsuya Sahara	strategic	180.0K	¥5,150	-67.7%	¥927M ($6.0M)
2023-04-10	BUY	unknown	株式会社A&Cコーポレーション A&C Corporation Co,Ltd.	strategic	523.0K	¥5,150	-67.7%	¥2.7B ($17.4M)
2023-04-10	BUY	unknown	株式会社KRAC KRAC Co., Ltd.	strategic	305.4K	¥5,150	-67.7%	¥1.6B ($10.1M)
2023-04-10	BUY	unknown	株式会社アレジアンス Allegiance Co.,Ltd	strategic	234.3K	¥5,150	-67.7%	¥1.2B ($7.8M)
2023-04-10	BUY	unknown	株式会社アレジアンス Allegiance Co.,Ltd	strategic	234.3K	¥5,150	-67.7%	¥1.2B ($7.8M)
2023-04-10	BUY	unknown	株式会社KRAC KRAC Co., Ltd.	strategic	305.4K	¥5,150	-67.7%	¥1.6B ($10.1M)
2023-04-10	BUY	unknown	株式会社KRAC KRAC Co., Ltd.	strategic	305.4K	¥5,150	-67.7%	¥1.6B ($10.1M)
2023-04-07	BUY	unknown	長尾吉祐 Yoshisuke Nagao	strategic	137.2K	¥5,050	-67.0%	¥693M ($4.5M)
2023-04-07	BUY	unknown	佐原敦矢 Atsuya Sahara	strategic	180.0K	¥5,050	-67.0%	¥909M ($5.9M)
2023-04-07	BUY	unknown	岩元勝志 Katsushi Iwamoto	strategic	20.0K	¥5,050	-67.0%	¥101M ($652K)
2023-04-07	BUY	unknown	佐原敦矢 Atsuya Sahara	strategic	180.0K	¥5,050	-67.0%	¥909M ($5.9M)
2023-04-07	BUY	unknown	長尾吉祐 Yoshisuke Nagao	strategic	137.2K	¥5,050	-67.0%	¥693M ($4.5M)
2023-04-07	BUY	unknown	長尾吉祐 Yoshisuke Nagao	strategic	137.2K	¥5,050	-67.0%	¥693M ($4.5M)
2023-04-07	BUY	unknown	佐原敦矢 Atsuya Sahara	strategic	180.0K	¥5,050	-67.0%	¥909M ($5.9M)
2023-04-07	BUY	unknown	株式会社A&Cコーポレーション A&C Corporation Co,Ltd.	strategic	523.0K	¥5,050	-67.0%	¥2.6B ($17.0M)
2023-04-07	BUY	unknown	株式会社アレジアンス代表取締役長尾吉祐 Allegiance Co.,Ltd	strategic	234.3K	¥5,050	-67.0%	¥1.2B ($7.6M)
2023-04-07	BUY	unknown	株式会社KRAC 代表取締役岩元勝志 KRAC Co., Ltd.	strategic	305.4K	¥5,050	-67.0%	¥1.5B ($10.0M)
2023-04-07	BUY	unknown	株式会社A&Cコーポレーション A&C Corporation Co,Ltd.	strategic	523.0K	¥5,050	-67.0%	¥2.6B ($17.0M)
2023-04-07	BUY	unknown	株式会社KRAC KRAC Co., Ltd.	strategic	305.4K	¥5,050	-67.0%	¥1.5B ($10.0M)
2023-04-07	BUY	unknown	株式会社アレジアンス Allegiance Co.,Ltd	strategic	234.3K	¥5,050	-67.0%	¥1.2B ($7.6M)
2023-04-07	BUY	unknown	株式会社アレジアンス Allegiance Co.,Ltd	strategic	234.3K	¥5,050	-67.0%	¥1.2B ($7.6M)
2023-04-07	BUY	unknown	株式会社KRAC KRAC Co., Ltd.	strategic	305.4K	¥5,050	-67.0%	¥1.5B ($10.0M)
2023-04-07	BUY	unknown	株式会社A&Cコーポレーション A&C Corporation Co,Ltd.	strategic	523.0K	¥5,050	-67.0%	¥2.6B ($17.0M)
2023-04-07	BUY	unknown	株式会社KRAC KRAC Co., Ltd.	strategic	305.4K	¥5,050	-67.0%	¥1.5B ($10.0M)

Frequently asked questions

Who has been buying Cocorport, Inc. stock?: 11 distinct investors have filed 22 disclosed large-shareholding filings in Cocorport, Inc. (9346), most recently on 2025-09-29. 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 Cocorport, Inc. have?: Cocorport, Inc. has 22 buy-side and 6 sell-side disclosures on record, covering ¥12.5B ($80.4M) in total reported value, spanning 2023-04-07 to 2025-09-29.
Where does StockDrifts get Cocorport, Inc. 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 Cocorport, Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.