Who has been buying Sumitomo Realty & Development Co., Ltd. stock?

16 distinct investors have filed 19 disclosed large-shareholding filings in Sumitomo Realty & Development Co., Ltd. (8830), most recently on 2025-09-19. 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 Sumitomo Realty & Development Co., Ltd. have?

Sumitomo Realty & Development Co., Ltd. has 19 buy-side and 20 sell-side disclosures on record, covering ¥20.7B ($133.7M) in total reported value, spanning 2022-06-06 to 2025-09-19.

Where does StockDrifts get Sumitomo Realty & Development 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.

Sumitomo Realty & Development Co., Ltd. 8830

Company

住友不動産株式会社Sumitomo Realty & Development Co., Ltd.

Investors

Buys

Total Value

¥20.7B ($133.7M)

Avg Return

+113.54%

Last Filing

2025-09-19

Sumitomo Realty & Development Co., Ltd. (8830) has 19 disclosed large-shareholding filings and 20 disclosed disposals on record, filed by 16 distinct investors. Together those filings cover ¥20.7B ($133.7M) in reported transaction value. The earliest filing StockDrifts holds for Sumitomo Realty & Development Co., Ltd. is dated 2022-06-06; the most recent is 2025-09-19. 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 +113.54%, 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
2026-06-19	SELL	negotiated	三井住友信託銀行株式会社	strategic	5.8M	¥3,609	-4.3%	¥4.4B ($28.3M)
2026-06-19	SELL	unknown	アモーヴァ・アセットマネジメント株式会社	other	19.1M	¥3,609	-4.3%	¥8.1B ($52.3M)
2026-06-19	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社	other	14.7M	¥3,609	-4.3%	¥22.3B ($143.8M)
2025-09-19	BUY	negotiated	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	10.7M	¥3,221	+45.5%	¥754M ($4.9M)
2025-09-19	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	10.4M	¥3,221	-45.5%	¥9.5B ($61.3M)
2025-09-19	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	3.5M	¥3,221	-45.5%	¥90.4B ($583.5M)
2025-07-03	SELL	Market Buy	ブラックロック・インベストメント・マネジメント(ユーケー)リミテッドLimited) BlackRock Investment Management (UK	passive	423.5K	¥2,793	-67.8%	¥133M ($858K)
2025-07-03	SELL	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company BlackRock Institutional Trust Company, N.A.	passive	4.4M	¥2,793	-67.8%	¥931M ($6.0M)
2025-07-03	BUY	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	6.2M	¥2,793	+67.8%	¥798M ($5.1M)
2025-07-03	BUY	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	3.2M	¥2,793	+67.8%	¥9.0B ($57.8M)
2025-07-03	SELL	Market Buy	ブラックロック・アセット・マネジメント・カナダ・リミテッド BlackRock Asset Management Canada Limited	passive	863.3K	¥2,793	-67.8%	¥266M ($1.7M)
2025-07-03	SELL	Market Buy	ブラックロック・ファンド・マネジャーズ・リミテッド BlackRock Fund Managers Limited	passive	2.9M	¥2,793	-67.8%	¥2.9B ($18.9M)
2025-07-03	SELL	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	1.3M	¥2,793	-67.8%	¥399M ($2.6M)
2025-07-03	SELL	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	7.2M	¥2,793	-67.8%	¥532M ($3.4M)
2025-05-09	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	27.9M	¥2,754.5	+70.2%	¥13.1B ($84.6M)
2025-05-09	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	459.5K	¥2,754.5	-70.2%	¥131.1B ($846.1M)
2025-05-08	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	10.6M	¥2,739.5	+71.1%	¥2.7B ($17.7M)
2025-05-08	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	13.6M	¥2,739.5	-71.1%	¥16.3B ($105.2M)
2025-05-08	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	3.8M	¥2,739.5	-71.1%	¥2.6B ($16.8M)
2025-02-19	SELL	Market Buy	ブラックロック・インベストメント・マネジメント(ユーケー)リミテッドLimited) BlackRock Investment Management (UK	passive	479.8K	¥2,511.5	-86.7%	¥4M ($23K)
2025-02-19	BUY	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	5.9M	¥2,511.5	+86.7%	¥20M ($131K)
2025-02-19	BUY	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	3.2M	¥2,511.5	+86.7%	¥12M ($77K)
2025-02-19	BUY	Market Buy	ブラックロック・アセット・マネジメント・カナダ・リミテッド BlackRock Asset Management Canada Limited	passive	965.2K	¥2,511.5	+86.7%	¥5M ($31K)
2025-02-19	BUY	Market Buy	ブラックロック・ファンド・マネジャーズ・リミテッド BlackRock Fund Managers Limited	passive	3.9M	¥2,511.5	+86.7%	¥35M ($224K)
2025-02-19	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	1.4M	¥2,511.5	+86.7%	¥11M ($69K)
2025-02-19	SELL	Market Buy	ブラックロック・インベストメント・マネジメント (オーストラリア)リミテッドLimited) BlackRock Investment Management (Australia	passive	438.8K	¥2,511.5	-86.7%	¥17M ($108K)
2025-02-19	BUY	Market Buy	ブラックロック・インベストメント・マネジメント・エルエルシー BlackRock Investment Management LLC	passive	246.2K	¥2,511.5	+86.7%	¥564M ($3.6M)
2025-02-19	BUY	Market Buy	ブラックロック・アドバイザーズ・エルエルシー(BlackRock Advisers BlackRock Advisers, LLC	passive	256.9K	¥2,511.5	+86.7%	¥581M ($3.7M)
2025-02-19	SELL	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	7.3M	¥2,511.5	-86.7%	¥3.7B ($23.9M)
2025-02-19	SELL	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company BlackRock Institutional Trust Company, N.A.	passive	4.8M	¥2,511.5	-86.7%	¥48M ($309K)
2023-11-07	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	9.6M	¥1,951	-140.3%	¥5.4B ($34.8M)
2023-11-07	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	19.6M	¥1,951	-140.3%	¥6.4B ($41.3M)
2023-11-07	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	4.8M	¥1,951	+140.3%	¥9.4B ($60.4M)
2023-06-07	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	23.1M	¥1,821	+157.4%	¥42.0B ($271.3M)
2023-06-07	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	958.8K	¥1,821	+157.4%	¥1.7B ($11.3M)
2022-12-07	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	21.4M	¥1,734	-170.4%	¥8.3B ($53.8M)
2022-06-06	SELL	Market Buy	ブラックロック・インベストメント・マネジメント(ユーケー)リミテッドLimited) BlackRock Investment Management (UK	passive	628.2K	¥1,779	-163.5%	¥1.1B ($7.1M)
2022-06-06	SELL	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company BlackRock Institutional Trust Company, N.A.	passive	6.6M	¥1,779	-163.5%	¥1.6B ($10.4M)
2022-06-06	BUY	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	5.1M	¥1,779	+163.5%	¥423M ($2.7M)
2022-06-06	BUY	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	2.7M	¥1,779	+163.5%	¥1.6B ($10.4M)
2022-06-06	BUY	Market Buy	ブラックロック・アセット・マネジメント・カナダ・リミテッド BlackRock Asset Management Canada Limited	passive	748.1K	¥1,779	+163.5%	¥1.3B ($8.6M)
2022-06-06	BUY	Market Buy	ブラックロック・ファンド・マネジャーズ・リミテッド BlackRock Fund Managers Limited	passive	2.5M	¥1,779	+163.5%	¥1.8B ($11.5M)
2022-06-06	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	1.0M	¥1,779	+163.5%	¥1.8B ($11.6M)
2022-06-06	BUY	Market Buy	ブラックロック・インベストメント・マネジメント (オーストラリア)リミテッドLimited) BlackRock Investment Management (Australia	passive	1.1M	¥1,779	+163.5%	¥1.9B ($12.5M)
2022-06-06	BUY	Market Buy	ブラックロック・インベストメント・マネジメント・エルエルシー BlackRock Investment Management LLC	passive	1.3M	¥1,779	+163.5%	¥1.0B ($6.6M)
2022-06-06	BUY	Market Buy	ブラックロック・アドバイザーズ・エルエルシー(BlackRock Advisers BlackRock Advisers, LLC	passive	666.0K	¥1,779	+163.5%	¥169M ($1.1M)
2022-06-06	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	8.8M	¥1,779	+163.5%	¥5.3B ($33.9M)

Frequently asked questions

Who has been buying Sumitomo Realty & Development Co., Ltd. stock?: 16 distinct investors have filed 19 disclosed large-shareholding filings in Sumitomo Realty & Development Co., Ltd. (8830), most recently on 2025-09-19. 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 Sumitomo Realty & Development Co., Ltd. have?: Sumitomo Realty & Development Co., Ltd. has 19 buy-side and 20 sell-side disclosures on record, covering ¥20.7B ($133.7M) in total reported value, spanning 2022-06-06 to 2025-09-19.
Where does StockDrifts get Sumitomo Realty & Development 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 Sumitomo Realty & Development Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.