Who has been buying Nippon Building Fund Incorporation stock?

26 distinct investors have filed 89 disclosed large-shareholding filings in Nippon Building Fund Incorporation (8951), most recently on 2026-03-30. 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 Nippon Building Fund Incorporation have?

Nippon Building Fund Incorporation has 89 buy-side and 45 sell-side disclosures on record, covering ¥165.1B ($1.1B) in total reported value, spanning 2021-05-11 to 2026-03-30.

Where does StockDrifts get Nippon Building Fund Incorporation 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.

Nippon Building Fund Incorporation 8951

Company

日本ビルファンド投資法人投資証券Nippon Building Fund Incorporation

Investors

Buys

Total Value

¥165.1B ($1.1B)

Avg Return

+6.19%

Last Filing

2026-03-30

Nippon Building Fund Incorporation (8951) has 89 disclosed large-shareholding filings and 45 disclosed disposals on record, filed by 26 distinct investors. Together those filings cover ¥165.1B ($1.1B) in reported transaction value. The earliest filing StockDrifts holds for Nippon Building Fund Incorporation is dated 2021-05-11; the most recent is 2026-03-30. 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 +6.19%, 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
2026-06-29	BUY	unknown	三菱UFJモルガン・スタンレー証券株式会社	other	38.5K	¥126,400	+7.9%	¥4.9B ($31.4M)
2026-06-29	BUY	Market Buy	三菱UFJアセットマネジメント株式会社	passive	298.1K	¥126,400	+7.9%	¥37.7B ($243.1M)
2026-06-29	BUY	Market Buy	三菱UFJ信託銀行株式会社	passive	115.3K	¥126,400	+7.9%	¥14.6B ($94.0M)
2026-06-18	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	21.1K	¥121,700	-9.6%	¥215M ($1.4M)
2026-06-18	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, N.A.	passive	111.7K	¥121,700	-9.6%	¥1.4B ($9.0M)
2026-06-18	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	234.1K	¥121,700	+9.6%	¥536M ($3.5M)
2026-06-18	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	105.0K	¥121,700	+9.6%	¥12.8B ($82.4M)
2026-06-18	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	24.2K	¥121,700	-9.6%	¥215M ($1.4M)
2026-06-18	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	85.9K	¥121,700	+9.6%	¥1.3B ($8.3M)
2026-06-18	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	37.5K	¥121,700	+9.6%	¥107M ($692K)
2026-06-18	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	22.4K	¥121,700	+9.6%	¥215M ($1.4M)
2026-06-18	SELL	Market Buy	アペリオ・グループ・エルエルシー Aperio Group, LLC	passive	7.7K	¥121,700	-9.6%	¥107M ($692K)
2026-06-18	BUY	Market Buy	ブラックロック・ジャパン株式会社	passive	221.7K	¥121,700	+9.6%	¥27.0B ($174.0M)
2026-03-30	SELL	Market Buy	三菱UFJモルガン・スタンレー証券株式会社	other	4.6K	¥132,800	+1.1%	¥11.4B ($73.3M)
2026-03-30	SELL	Market Buy	三菱UFJアセットマネジメント株式会社	passive	274.2K	¥132,800	+1.1%	¥819M ($5.3M)
2026-03-30	BUY	Market Buy	三菱UFJ信託銀行株式会社	passive	120.8K	¥132,800	-1.1%	¥585M ($3.8M)
2026-01-20	BUY	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	22.2K	¥148,600	-8.1%	¥3.0B ($19.5M)
2026-01-20	BUY	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	passive	121.3K	¥148,600	-8.1%	¥16.6B ($106.9M)
2026-01-20	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	226.1K	¥148,600	-8.1%	¥30.9B ($199.3M)
2026-01-20	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	102.6K	¥148,600	-8.1%	¥14.0B ($90.4M)
2026-01-20	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	25.4K	¥148,600	-8.1%	¥3.5B ($22.4M)
2026-01-20	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	73.9K	¥148,600	-8.1%	¥10.1B ($65.2M)
2026-01-20	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	36.0K	¥148,600	+8.1%	¥4.9B ($31.8M)
2026-01-20	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	20.2K	¥148,600	+8.1%	¥2.8B ($17.8M)
2026-01-20	BUY	Market Buy	アペリオ・グループ・エルエルシー(Aperio Group	passive	9.0K	¥148,600	+8.1%	¥1.2B ($7.9M)
2026-01-20	SELL	Market Buy	ブラックロック・ジャパン株式会社	passive	217.4K	¥148,600	+8.1%	¥29.7B ($191.6M)
2025-12-23	BUY	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	20.9K	¥142,800	-4.3%	¥2.9B ($18.4M)
2025-12-23	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	passive	109.3K	¥142,800	+4.3%	¥14.9B ($96.3M)
2025-12-23	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	223.2K	¥142,800	+4.3%	¥30.5B ($196.7M)
2025-12-23	SELL	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	100.7K	¥142,800	+4.3%	¥13.8B ($88.8M)
2025-12-23	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	24.0K	¥142,800	-4.3%	¥3.3B ($21.1M)
2025-12-23	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	72.6K	¥142,800	+4.3%	¥9.9B ($64.0M)
2025-12-23	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	36.7K	¥142,800	-4.3%	¥5.0B ($32.3M)
2025-12-23	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	19.9K	¥142,800	+4.3%	¥2.7B ($17.6M)
2025-12-23	SELL	Market Buy	ブラックロック・アドバイザーズ・エルエルシー(BlackRock Advisers	passive	6.1K	¥142,800	+4.3%	¥827M ($5.3M)
2025-12-23	BUY	Market Buy	アペリオ・グループ・エルエルシー(Aperio Group	passive	9.0K	¥142,800	+4.3%	¥1.2B ($7.9M)
2025-12-23	SELL	Market Buy	ブラックロック・ジャパン株式会社	passive	218.9K	¥142,800	+4.3%	¥29.9B ($192.9M)
2025-09-19	SELL	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	40.0K	¥141,400	+3.4%	¥12.2B ($78.9M)
2025-09-19	SELL	Market Buy	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	232.7K	¥141,400	+3.4%	¥2.0B ($12.6M)
2025-09-19	BUY	Market Buy	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	323.0K	¥141,400	-3.4%	¥2.4B ($15.8M)
2025-07-07	BUY	Market Buy	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	86.4K	¥133,500	+2.3%	¥341M ($2.2M)
2025-07-07	BUY	Market Buy	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	270.9K	¥133,500	+2.3%	¥36.2B ($233.3M)
2025-07-07	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	417.6K	¥133,500	+2.3%	¥55.7B ($359.6M)
2025-07-07	BUY	unknown	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	other	12.6K	¥133,500	+2.3%	¥1.7B ($10.9M)
2025-07-07	BUY	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	112.0K	¥133,500	+2.3%	¥227M ($1.5M)
2025-06-30	BUY	Market Buy	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	270.3K	¥132,900	+2.8%	¥35.9B ($231.7M)
2025-06-30	BUY	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	110.2K	¥132,900	+2.8%	¥14.6B ($94.5M)
2025-06-30	BUY	Market Buy	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	84.6K	¥132,900	+2.8%	¥11.2B ($72.6M)
2025-05-21	BUY	Market Buy	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	242.5K	¥129,500	+5.5%	¥110M ($711K)
2025-05-21	BUY	Market Buy	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	300.5K	¥129,500	+5.5%	¥110M ($711K)

Showing the 50 most recent of 166 filings.

Frequently asked questions

Who has been buying Nippon Building Fund Incorporation stock?: 26 distinct investors have filed 89 disclosed large-shareholding filings in Nippon Building Fund Incorporation (8951), most recently on 2026-03-30. 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 Nippon Building Fund Incorporation have?: Nippon Building Fund Incorporation has 89 buy-side and 45 sell-side disclosures on record, covering ¥165.1B ($1.1B) in total reported value, spanning 2021-05-11 to 2026-03-30.
Where does StockDrifts get Nippon Building Fund Incorporation 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 Nippon Building Fund Incorporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.