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.

Where does StockDrifts get The Shiga Bank, Ltd. 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.

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. 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 +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	+5.9%	¥5.6B ($35.9M)
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	-56.0%	¥95M ($610K)
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	-56.0%	¥763M ($4.9M)
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	+100.8%	¥2.8B ($18.0M)
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	-86.8%	¥107M ($691K)
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	+86.8%	¥744M ($4.8M)
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	+108.4%	¥351M ($2.3M)
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	+108.4%	¥2.2B ($14.4M)
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	-177.9%	¥167M ($1.1M)
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	-177.9%	¥371M ($2.4M)
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	+144.3%	¥112M ($723K)
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	+144.3%	¥358M ($2.3M)
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	-255.3%	¥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	-281.3%	¥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	-301.0%	¥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	-279.6%	¥289M ($1.9M)
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	+338.6%	¥19M ($124K)
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	-338.6%	¥168M ($1.1M)
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	-338.6%	¥89M ($573K)

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.
Where does StockDrifts get The Shiga Bank, Ltd. 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 The Shiga Bank, Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.