Who has been buying The Shiga Bank, Ltd. stock?

7 distinct investors have filed 8 disclosed large-shareholding filings in The Shiga Bank, Ltd. (8366), most recently on 2026-05-13. 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 The Shiga Bank, Ltd. have?

The Shiga Bank, Ltd. has 8 buy-side and 11 sell-side disclosures on record, covering ¥8.7B ($55.9M) in total reported value, spanning 2022-02-21 to 2026-05-13.

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.

The Shiga Bank, Ltd. 8366

Company

滋賀銀行The Shiga Bank, Ltd.

Investors

Buys

Total Value

¥8.7B ($55.9M)

Avg Return

+129.52%

Last Filing

2026-05-13

The Shiga Bank, Ltd. (8366) has 8 disclosed large-shareholding filings and 11 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥8.7B ($55.9M) in reported transaction value. The earliest filing StockDrifts holds for The Shiga Bank, Ltd. is dated 2022-02-21; the most recent is 2026-05-13. Across these filings the average return since disclosure is +129.52%, 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
2026-05-13	BUY	Market Buy	ありあけキャピタル株式会社 Ariake Capital Inc.	activist	15.6M	¥1,976	+45.9%	¥5.6B ($35.9M)
2025-10-07	SELL	unknown	ウエリントン・マネージメント・カンパニー・エルエルピー Wellington Management Company LLP	other	2.4M	¥1,272	-126.7%	¥763M ($4.9M)
2025-10-07	SELL	unknown	ウエリントン・マネージメント・インターナショナル・リミテッド Wellington Management International Ltd	other	191.9K	¥1,272	-126.7%	¥95M ($610K)
2025-04-14	BUY	acquisition	ありあけキャピタル株式会社 Ariake Capital Inc.	activist	2.8M	¥988	+191.8%	¥2.8B ($18.0M)
2025-04-02	BUY	Market Buy	ウエリントン・マネージメント・カンパニー・エルエルピー Wellington Management Company LLP	other	3.0M	¥1,062	+171.5%	¥744M ($4.8M)
2025-04-02	SELL	Market Buy	ウエリントン・マネージメント・インターナショナル・リミテッド Wellington Management International Ltd	other	263.4K	¥1,062	-171.5%	¥107M ($691K)
2025-02-19	BUY	unknown	ウエリントン・マネージメント・カンパニー・エルエルピー Wellington Management Company LLP	other	2.3M	¥952	+202.8%	¥2.2B ($14.4M)
2025-02-19	BUY	unknown	ウエリントン・マネージメント・インターナショナル・リミテッド Wellington Management International Ltd	other	368.5K	¥952	+202.8%	¥351M ($2.3M)
2024-08-21	SELL	unknown	ウエリントン・マネージメント・カンパニー・エルエルピー Wellington Management Company LLP	other	1.7M	¥714	-303.8%	¥371M ($2.4M)
2024-08-21	SELL	unknown	ウエリントン・マネージメント・インターナショナル・リミテッド Wellington Management International Ltd	other	838.0K	¥714	-303.8%	¥167M ($1.1M)
2023-11-06	BUY	Market Buy	ウエリントン・マネージメント・カンパニー・エルエルピー Wellington Management Company LLP	other	2.3M	¥812	+255.1%	¥358M ($2.3M)
2023-11-06	BUY	Market Buy	ウエリントン・マネージメント・インターナショナル・リミテッド Wellington Management International Ltd	other	1.1M	¥812	+255.1%	¥112M ($723K)
2023-01-30	SELL	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	2.3M	¥558.4	-416.3%	¥305M ($2.0M)
2023-01-05	SELL	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	2.9M	¥520.4	-454.0%	¥285M ($1.8M)
2022-10-28	SELL	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	3.4M	¥494.8	-482.7%	¥271M ($1.7M)
2022-08-03	SELL	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	4.0M	¥522.6	-451.7%	¥289M ($1.9M)
2022-02-21	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	505.0K	¥452.4	-	¥89M ($573K)
2022-02-21	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	1.3M	¥452.4	-	¥168M ($1.1M)
2022-02-21	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	592.5K	¥452.4	-	¥19M ($124K)

Frequently asked questions

Who has been buying The Shiga Bank, Ltd. stock?: 7 distinct investors have filed 8 disclosed large-shareholding filings in The Shiga Bank, Ltd. (8366), most recently on 2026-05-13. 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 The Shiga Bank, Ltd. have?: The Shiga Bank, Ltd. has 8 buy-side and 11 sell-side disclosures on record, covering ¥8.7B ($55.9M) in total reported value, spanning 2022-02-21 to 2026-05-13.
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.