Who has been buying Nichiryoku Co.,Ltd. stock?

9 distinct investors have filed 16 disclosed large-shareholding filings in Nichiryoku Co.,Ltd. (7578), most recently on 2026-05-14. 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 Nichiryoku Co.,Ltd. have?

Nichiryoku Co.,Ltd. has 16 buy-side and 25 sell-side disclosures on record, covering ¥1.8B ($11.5M) in total reported value, spanning 2021-07-12 to 2026-05-14.

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.

Nichiryoku Co.,Ltd. 7578

Company

株式会社ニチリョクNichiryoku Co.,Ltd.

Investors

Buys

Total Value

¥1.8B ($11.5M)

Avg Return

-6.84%

Last Filing

2026-05-14

Nichiryoku Co.,Ltd. (7578) has 16 disclosed large-shareholding filings and 25 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥1.8B ($11.5M) in reported transaction value. The earliest filing StockDrifts holds for Nichiryoku Co.,Ltd. is dated 2021-07-12; the most recent is 2026-05-14. Across these filings the average return since disclosure is -6.84%, 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
2026-09-07	SELL	subscription	古川徳厚	passive	7.6M	¥82	+7.3%	¥7M ($46K)
2026-09-07	SELL	subscription	グロースパートナーズ株式会社	passive	7.6M	¥82	+7.3%	¥7M ($46K)
2026-08-10	SELL	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	302.3K	¥66	-15.2%	¥76M ($490K)
2026-08-07	BUY	subscription	グロースパートナーズ株式会社	passive	7.8M	¥65	+16.9%	¥225M ($1.4M)
2026-08-07	BUY	subscription	古川徳厚	passive	7.8M	¥65	+16.9%	¥225M ($1.4M)
2026-08-07	BUY	subscription	グロースパートナーズ株式会社	passive	7.8M	¥65	+16.9%	¥143M ($924K)
2026-08-07	BUY	subscription	古川徳厚	passive	7.8M	¥65	+16.9%	¥143M ($924K)
2026-08-06	SELL	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	1.5M	¥65	-16.9%	¥414M ($2.7M)
2026-07-02	SELL	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	12.5M	¥76	+0.0%	¥29M ($189K)
2026-05-14	BUY	subscription	グロースパートナーズ株式会社	other	2.3M	¥102	-25.5%	¥232M ($1.5M)
2026-05-14	BUY	unknown	古川徳厚	other	2.3M	¥102	-25.5%	¥232M ($1.5M)
2026-05-14	BUY	Market Buy	株式会社アリスタゴラ・アドバイザーズ Aristagora Advisors Co., Ltd.	engagement	15.0M	¥102	-25.5%	¥210M ($1.4M)
2026-05-13	BUY	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	13.1M	¥104	-26.9%	¥523M ($3.4M)
2026-04-28	BUY	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	3.4M	¥103	-26.2%	¥91M ($585K)
2026-04-23	SELL	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	2.4M	¥106	+28.3%	¥93M ($602K)
2025-09-17	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	3.4M	¥145	+47.6%	¥38M ($246K)
2025-08-26	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	3.7M	¥123	+38.2%	¥22M ($139K)
2025-07-28	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	3.9M	¥123	+38.2%	¥22M ($142K)
2025-05-22	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	4.1M	¥129	+41.1%	¥23M ($149K)
2025-05-02	BUY	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	4.3M	¥124	-38.7%	¥335M ($2.2M)
2025-04-23	BUY	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	1.0M	¥122	-	¥122M ($787K)
2025-04-23	BUY	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	1.0M	¥122	-37.7%	¥122M ($787K)
2023-06-26	SELL	Market Buy	シグマシンカ株式会社 SIGMA SHINKA Inc.	passive	1.1M	¥219	+65.3%	¥6M ($36K)
2022-12-28	BUY	Market Buy	シグマシンカ株式会社 SHIGUMASHINKA Co., Ltd.	passive	1.1M	¥114	-33.3%	¥124M ($800K)
2022-12-22	SELL	negotiated	株式会社エムエスシー MSC Co., Ltd.	strategic	310	¥116	+34.5%	¥983K ($6K)
2022-12-22	BUY	negotiated	寺村久義 Hisayoshi Teramura	strategic	262.3K	¥116	-34.5%	¥30M ($194K)
2022-12-22	SELL	negotiated	寺村久義 Hisayoshi Teramura	strategic	250	¥116	+34.5%	¥311K ($2K)
2022-12-22	BUY	negotiated	寺村公子 Kimiko Teramura	strategic	1.3K	¥116	-	-
2022-12-22	SELL	negotiated	株式会社エムエスシー MSC Co., Ltd.	strategic	310	¥116	+34.5%	¥983K ($6K)
2022-12-22	BUY	negotiated	寺村公子 Kimiko Teramura	strategic	1.3K	¥116	-	-
2022-12-07	BUY	negotiated	寺村公子 Kimiko Teramura	strategic	1.3K	¥116	-34.5%	¥4M ($27K)
2022-12-07	SELL	negotiated	寺村久義 Hisayoshi Teramura	strategic	265.3K	¥116	+34.5%	¥29M ($185K)
2022-12-07	SELL	negotiated	寺村久義 Hisayoshi Teramura	strategic	262.3K	¥116	+34.5%	¥29M ($188K)
2022-12-07	SELL	negotiated	寺村久義 Hisayoshi Teramura	strategic	265.3K	¥116	+34.5%	¥29M ($185K)
2022-12-07	BUY	negotiated	株式会社エムエスシー MSC Co., Ltd.	strategic	827.2K	¥116	-34.5%	¥94M ($604K)
2022-12-07	BUY	negotiated	寺村公子 Kimiko Teramura	strategic	1.3K	¥116	-34.5%	¥4M ($27K)
2022-12-07	BUY	negotiated	株式会社エムエスシー MSC Co., Ltd.	strategic	827.2K	¥116	-34.5%	¥94M ($604K)
2022-12-07	BUY	negotiated	寺村公子 Kimiko Teramura	strategic	1.3K	¥116	-34.5%	¥4M ($27K)
2022-12-07	BUY	negotiated	株式会社エムエスシー MSC Co., Ltd.	strategic	827.2K	¥116	-34.5%	¥94M ($604K)
2022-11-18	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	719.0K	¥124	+38.7%	¥20M ($129K)
2022-11-08	SELL	Market Buy	株式会社アリスタゴラ・アドバイザーズ Aristagora Advisors Co., Ltd.	engagement	7.0M	¥119	+36.1%	¥317M ($2.0M)
2022-09-30	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	885.9K	¥113	+32.7%	¥19M ($123K)
2022-08-26	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	1.1M	¥114	+33.3%	¥22M ($142K)
2022-07-29	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	1.3M	¥119	+36.1%	¥23M ($146K)
2022-04-04	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	1.5M	¥122	+37.7%	¥18M ($115K)
2021-12-17	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	1.6M	¥130	+41.5%	¥19M ($122K)
2021-12-03	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	1.8M	¥134	+43.3%	¥20M ($126K)
2021-11-30	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	2.0M	¥133	+42.9%	¥50M ($321K)
2021-11-25	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	2.4M	¥149	+49.0%	¥37M ($240K)
2021-10-28	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	2.7M	¥162	+53.1%	¥20M ($129K)

Showing the 50 most recent of 55 filings.

Frequently asked questions

Who has been buying Nichiryoku Co.,Ltd. stock?: 9 distinct investors have filed 16 disclosed large-shareholding filings in Nichiryoku Co.,Ltd. (7578), most recently on 2026-05-14. 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 Nichiryoku Co.,Ltd. have?: Nichiryoku Co.,Ltd. has 16 buy-side and 25 sell-side disclosures on record, covering ¥1.8B ($11.5M) in total reported value, spanning 2021-07-12 to 2026-05-14.
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.