Who has been buying SRS Holdings Co.,Ltd. stock?

13 distinct investors have filed 17 disclosed large-shareholding filings in SRS Holdings Co.,Ltd. (8163), most recently on 2026-04-20. 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 SRS Holdings Co.,Ltd. have?

SRS Holdings Co.,Ltd. has 17 buy-side and 19 sell-side disclosures on record, covering ¥21.9B ($141.3M) in total reported value, spanning 2021-05-12 to 2026-04-20.

Where does StockDrifts get SRS Holdings Co.,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.

SRS Holdings Co.,Ltd. 8163

Company

SRSホールディングス株式会社SRS Holdings Co.,Ltd.

Investors

Buys

Total Value

¥21.9B ($141.3M)

Avg Return

+28.50%

Last Filing

2026-04-20

SRS Holdings Co.,Ltd. (8163) has 17 disclosed large-shareholding filings and 19 disclosed disposals on record, filed by 13 distinct investors. Together those filings cover ¥21.9B ($141.3M) in reported transaction value. The earliest filing StockDrifts holds for SRS Holdings Co.,Ltd. is dated 2021-05-12; the most recent is 2026-04-20. 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 +28.50%, 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
2026-04-20	BUY	negotiated	三菱UFJ eスマート証券株式会社	other	44.6K	¥1,206	-1.2%	¥54M ($347K)
2026-04-20	BUY	negotiated	三菱UFJアセットマネジメント株式会社	passive	207.1K	¥1,206	-1.2%	¥20M ($129K)
2026-04-20	SELL	negotiated	三菱UFJ信託銀行株式会社	passive	622.8K	¥1,206	+1.2%	¥125M ($807K)
2026-04-20	SELL	unknown	三菱UFJモルガン・スタンレー証券株式会社	other	54.5K	¥1,206	+1.2%	¥450M ($2.9M)
2026-04-20	BUY	unknown	三菱UFJ eスマート証券株式会社	other	44.6K	¥1,206	-1.2%	¥54M ($347K)
2026-04-20	BUY	Market Buy	三菱UFJアセットマネジメント株式会社	passive	207.1K	¥1,206	-1.2%	¥20M ($129K)
2026-04-20	SELL	Market Buy	三菱UFJ信託銀行株式会社	passive	622.8K	¥1,206	+1.2%	¥125M ($807K)
2026-04-20	BUY	negotiated	株式会社三菱UFJ銀行	strategic	1.2M	¥1,206	-1.2%	¥1.4B ($9.3M)
2026-04-20	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社	other	54.5K	¥1,206	+1.2%	¥450M ($2.9M)
2026-04-20	BUY	negotiated	株式会社三菱UFJ銀行	strategic	1.2M	¥1,206	-1.2%	¥1.4B ($9.3M)
2025-12-22	BUY	negotiated	重里百合子	activist	769.7K	¥1,206	+0.0%	¥928M ($6.0M)
2025-12-22	SELL	negotiated	重里欣孝	activist	1.6M	¥1,206	+0.0%	¥1.9B ($12.1M)
2025-12-22	BUY	negotiated	重里百合子	activist	769.7K	¥1,206	+0.0%	¥928M ($6.0M)
2025-12-22	SELL	negotiated	重里欣孝	activist	1.6M	¥1,206	+0.0%	¥1.9B ($12.1M)
2024-07-29	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.2M	¥1,278	-5.6%	¥1.5B ($9.9M)
2024-07-29	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	428.4K	¥1,278	+5.6%	¥11M ($68K)
2024-07-29	BUY	negotiated	auカブコム証券株式会社 Mitsubishi UFJ Financial Group Inc.	other	44.8K	¥1,278	-5.6%	¥57M ($369K)
2024-07-29	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	189.5K	¥1,278	-5.6%	¥21M ($137K)
2024-07-29	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	727.1K	¥1,278	-5.6%	¥270M ($1.7M)
2024-07-19	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	526.5K	¥1,270	-5.0%	¥142M ($917K)
2024-07-19	SELL	unknown	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	1.2M	¥1,270	+5.0%	¥637M ($4.1M)
2024-06-11	BUY	Market Buy	エーエージーエス・インベストメント・インク(AAGS Investment, Inc.) AAGS Investment, Inc.	passive	7.8M	¥1,249	-3.4%	¥9.7B ($62.8M)
2024-01-29	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	515.4K	¥1,195	-0.9%	¥164M ($1.1M)
2024-01-29	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	435.8K	¥1,195	+0.9%	¥521M ($3.4M)
2024-01-29	SELL	negotiated	auカブコム証券株式会社 Mitsubishi UFJ Financial Group Inc.	other	45.3K	¥1,195	-0.9%	¥45M ($288K)
2024-01-29	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	173.8K	¥1,195	+0.9%	¥69M ($448K)
2024-01-29	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.2M	¥1,195	-0.9%	¥357M ($2.3M)
2023-05-26	SELL	negotiated	重里百合子 Yuriko Shigesato	activist	769.7K	¥961	-25.5%	¥139M ($900K)
2023-05-26	SELL	negotiated	重里百合子 Yuriko Shigesato	activist	769.7K	¥961	-25.5%	¥139M ($900K)
2023-05-26	SELL	negotiated	重里欣孝 YOSHITAKA SHIGESATO	activist	2.0M	¥961	-25.5%	¥383M ($2.5M)
2023-05-26	SELL	negotiated	重里欣孝 YOSHITAKA SHIGESATO	activist	2.0M	¥961	-25.5%	¥383M ($2.5M)
2022-03-07	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	85.7K	¥831	+45.1%	¥3M ($21K)
2022-03-07	BUY	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	1.9M	¥831	+45.1%	¥1.5B ($9.8M)
2022-01-21	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・エルエルシー Morgan Stanley & Co. LLC	other	13.1K	¥769	+56.8%	¥858M ($5.5M)
2022-01-21	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	82.3K	¥769	+56.8%	¥27M ($174K)
2022-01-21	BUY	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	2.5M	¥769	+56.8%	¥1.8B ($11.4M)
2021-11-19	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	45.7K	¥774	+55.8%	¥35M ($228K)
2021-11-19	BUY	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	2.9M	¥774	+55.8%	¥2.1B ($13.4M)
2021-11-19	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・エルエルシー Morgan Stanley & Co. LLC	other	50.6K	¥774	+55.8%	¥39M ($253K)
2021-10-06	SELL	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	3.4M	¥772	-56.2%	¥396M ($2.6M)
2021-08-16	SELL	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	4.0M	¥814	-48.2%	¥308M ($2.0M)
2021-07-21	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	367.6K	¥804	+50.0%	¥29M ($190K)
2021-07-21	SELL	unknown	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	1.5M	¥804	-50.0%	¥21M ($133K)
2021-07-08	SELL	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	4.4M	¥804	-50.0%	¥306M ($2.0M)
2021-06-16	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	34.5K	¥827	+45.8%	¥2.7B ($17.4M)
2021-06-16	BUY	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	4.8M	¥827	+45.8%	¥3.5B ($22.5M)
2021-05-12	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	41.8K	¥818	+47.4%	¥34M ($221K)
2021-05-12	BUY	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	5.2M	¥818	+47.4%	¥3.7B ($23.7M)

Frequently asked questions

Who has been buying SRS Holdings Co.,Ltd. stock?: 13 distinct investors have filed 17 disclosed large-shareholding filings in SRS Holdings Co.,Ltd. (8163), most recently on 2026-04-20. 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 SRS Holdings Co.,Ltd. have?: SRS Holdings Co.,Ltd. has 17 buy-side and 19 sell-side disclosures on record, covering ¥21.9B ($141.3M) in total reported value, spanning 2021-05-12 to 2026-04-20.
Where does StockDrifts get SRS Holdings Co.,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 SRS Holdings Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.