Who has been buying Ispace, Inc. stock?

5 distinct investors have filed 8 disclosed large-shareholding filings in Ispace, Inc. (9348), most recently on 2026-04-30. 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 Ispace, Inc. have?

Ispace, Inc. has 8 buy-side and 16 sell-side disclosures on record, covering ¥88.9B ($573.4M) in total reported value, spanning 2023-04-19 to 2026-04-30.

Where does StockDrifts get Ispace, Inc. 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.

Ispace, Inc. 9348

Company

株式会社ispaceIspace, Inc.

Investors

Buys

Total Value

¥88.9B ($573.4M)

Avg Return

-48.06%

Last Filing

2026-04-30

Ispace, Inc. (9348) has 8 disclosed large-shareholding filings and 16 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥88.9B ($573.4M) in reported transaction value. The earliest filing StockDrifts holds for Ispace, Inc. is dated 2023-04-19; the most recent is 2026-04-30. 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 -48.06%, 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
2026-04-30	SELL	Market Buy	赤浦徹 Tohru Akaura	passive	9.2M	¥468	-49.4%	¥465M ($3.0M)
2026-03-09	SELL	subscription	袴田武史 Takeshi Hakamada	activist	12.0M	¥550	+9.8%	¥2.5B ($16.1M)
2026-03-06	SELL	subscription	ハイツ・キャピタル・マネジメント・インク(Heights Capital Management, Inc.) Heights Capital Management, Inc.	passive	11.1M	¥570	+13.0%	¥1.6B ($10.3M)
2026-03-04	BUY	subscription	ハイツ・キャピタル・マネジメント・インク(Heights Capital Management, Inc.) Heights Capital Management, Inc.	passive	14.1M	¥554	-10.5%	¥7.8B ($50.5M)
2026-03-02	SELL	subscription	ハイツ・キャピタル・マネジメント・インク(Heights Capital Management, Inc.) Heights Capital Management, Inc.	passive	14.1M	¥602	+17.6%	¥106M ($681K)
2025-10-29	SELL	Market Buy	ハイツ・キャピタル・マネジメント・インク(Heights Capital Management, Inc.) Heights Capital Management, Inc.	passive	14.1M	¥467	-6.2%	¥1.9B ($12.5M)
2025-10-28	SELL	Market Buy	赤浦徹 Tohru Akaura	passive	10.0M	¥480	-3.3%	¥1.6B ($10.1M)
2025-10-22	SELL	unknown	袴田武史 Takeshi Hakamada	activist	12.0M	¥475	-4.4%	¥775M ($5.0M)
2025-10-21	SELL	Market Buy	赤浦徹 Tohru Akaura	passive	9.8M	¥471	-5.3%	¥639M ($4.1M)
2025-05-23	SELL	Market Buy	ハイツ・キャピタル・マネジメント・インク(Heights Capital Management, Inc.) Heights Capital Management, Inc.	passive	14.0M	¥1,319	+62.4%	¥3.3B ($21.2M)
2025-04-02	BUY	Market Buy	ハイツ・キャピタル・マネジメント・インク(Heights Capital Management, Inc.) Heights Capital Management, Inc.	passive	16.8M	¥716	-30.7%	¥3.1B ($20.2M)
2025-02-25	BUY	Market Buy	ハイツ・キャピタル・マネジメント・インク(Heights Capital Management, Inc.) Heights Capital Management, Inc.	passive	11.3M	¥614	-19.2%	¥6.9B ($44.6M)
2025-02-19	BUY	Market Buy	ハイツ・キャピタル・マネジメント・インク(Heights Capital Management, Inc.) Heights Capital Management, Inc.	passive	11.3M	¥622	-20.3%	¥1.7B ($11.1M)
2025-02-05	BUY	Market Buy	ハイツ・キャピタル・マネジメント・インク(Heights Capital Management, Inc.) Heights Capital Management, Inc.	passive	8.3M	¥632	-21.5%	¥1.4B ($9.3M)
2024-12-10	BUY	Market Buy	ハイツ・キャピタル・マネジメント・インク(Heights Capital Management, Inc.) Heights Capital Management, Inc.	passive	5.5M	¥520	-4.6%	¥2.9B ($18.5M)
2024-10-17	SELL	unknown	袴田武史 Takeshi Hakamada	activist	12.0M	¥640	+22.5%	¥30M ($193K)
2024-05-20	BUY	Market Buy	株式会社INCJ INCJ, Ltd.	passive	4.1M	¥741	-33.1%	¥732M ($4.7M)
2024-05-20	SELL	Market Buy	株式会社INCJ INCJ, Ltd.	passive	4.1M	¥741	+33.1%	¥732M ($4.7M)
2024-04-17	SELL	Market Buy	株式会社INCJ INCJ, Ltd.	passive	5.0M	¥755	+34.3%	¥717M ($4.6M)
2024-04-08	SELL	Market Buy	株式会社INCJ INCJ, Ltd.	passive	6.0M	¥754	+34.2%	¥827M ($5.3M)
2024-04-08	BUY	Market Buy	株式会社INCJ INCJ, Ltd.	passive	6.0M	¥754	-34.2%	¥827M ($5.3M)
2024-04-01	BUY	unknown	袴田武史 Takeshi Hakamada	activist	12.0M	¥799	-37.9%	¥1.5B ($9.6M)
2024-04-01	BUY	unknown	袴田武史 Takeshi Hakamada	activist	12.0M	¥799	-37.9%	¥9.6B ($61.9M)
2024-04-01	SELL	Market Buy	赤浦徹 Tohru Akaura	passive	9.8M	¥799	+37.9%	¥1.1B ($6.9M)
2023-10-20	SELL	subscription	小沼美和 Miwa Konuma	activist	3.7M	¥847	+41.4%	¥1.0B ($6.5M)
2023-10-10	SELL	Market Buy	赤浦徹 Tohru Akaura	passive	9.8M	¥998	+50.3%	¥7.5B ($48.5M)
2023-04-19	BUY	unknown	袴田武史 Takeshi Hakamada	activist	12.0M	¥2,142	-76.8%	¥25.7B ($165.8M)
2023-04-19	BUY	Market Buy	赤浦徹 Tohru Akaura	passive	17.0M	¥2,142	-76.8%	¥36.4B ($235.1M)
2023-04-19	BUY	subscription	小沼美和 Miwa Konuma	activist	4.9M	¥2,142	-76.8%	¥10.5B ($67.8M)
2023-04-19	BUY	subscription	小沼美和 Miwa Konuma	activist	4.9M	¥2,142	-76.8%	¥10.5B ($67.8M)
2023-04-19	BUY	Market Buy	株式会社INCJ INCJ, Ltd.	passive	6.1M	¥2,142	-76.8%	¥13.1B ($84.5M)

Frequently asked questions

Who has been buying Ispace, Inc. stock?: 5 distinct investors have filed 8 disclosed large-shareholding filings in Ispace, Inc. (9348), most recently on 2026-04-30. 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 Ispace, Inc. have?: Ispace, Inc. has 8 buy-side and 16 sell-side disclosures on record, covering ¥88.9B ($573.4M) in total reported value, spanning 2023-04-19 to 2026-04-30.
Where does StockDrifts get Ispace, Inc. 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 Ispace, Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.