Who has been buying Arent Inc. stock?

11 distinct investors have filed 23 disclosed large-shareholding filings in Arent Inc. (5254), most recently on 2026-04-22. 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 Arent Inc. have?

Arent Inc. has 23 buy-side and 32 sell-side disclosures on record, covering ¥16.1B ($103.8M) in total reported value, spanning 2023-03-29 to 2026-04-22.

Where does StockDrifts get Arent 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.

Arent Inc. 5254

Company

株式会社ArentArent Inc.

Investors

Buys

Total Value

¥16.1B ($103.8M)

Avg Return

+41.57%

Last Filing

2026-04-22

Arent Inc. (5254) has 23 disclosed large-shareholding filings and 32 disclosed disposals on record, filed by 11 distinct investors. Together those filings cover ¥16.1B ($103.8M) in reported transaction value. The earliest filing StockDrifts holds for Arent Inc. is dated 2023-03-29; the most recent is 2026-04-22. 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 +41.57%, 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
2026-08-06	SELL	unknown	株式会社SBI証券	other	28.2K	¥4,630	+7.0%	¥248M ($1.6M)
2026-08-06	SELL	Market Buy	SBIインベストメント株式会社	passive	381.4K	¥4,630	+7.0%	¥74M ($478K)
2026-07-08	BUY	Market Buy	さくら損害保険株式会社	passive	16.0K	¥4,100	-1.2%	¥66M ($423K)
2026-07-08	BUY	Market Buy	光通信株式会社	passive	641.7K	¥4,100	-1.2%	¥63M ($405K)
2026-07-08	BUY	Market Buy	株式会社UH Partners 2	passive	130.7K	¥4,100	-1.2%	¥228M ($1.5M)
2026-06-15	BUY	Market Buy	さくら損害保険株式会社	passive	16.0K	¥3,385	+22.2%	¥54M ($349K)
2026-06-15	BUY	Market Buy	株式会社UH Partners 2	passive	75.0K	¥3,385	+22.2%	¥134M ($866K)
2026-06-15	BUY	Market Buy	光通信株式会社	passive	626.5K	¥3,385	+22.2%	¥129M ($835K)
2026-05-18	BUY	Market Buy	株式会社UH Partners 2	passive	35.8K	¥3,440	-3.2%	¥98M ($633K)
2026-05-18	BUY	Market Buy	光通信株式会社	passive	588.6K	¥3,440	-3.2%	¥146M ($941K)
2026-05-18	BUY	Market Buy	さくら損害保険株式会社	passive	16.0K	¥3,440	-3.2%	¥55M ($355K)
2026-04-22	BUY	Market Buy	さくら損害保険株式会社	passive	16.0K	¥4,290	-11.0%	¥69M ($443K)
2026-04-22	BUY	Market Buy	株式会社UH Partners 2	passive	7.0K	¥4,290	-11.0%	¥30M ($194K)
2026-04-22	BUY	Market Buy	光通信株式会社	passive	546.2K	¥4,290	-11.0%	¥289M ($1.9M)
2026-04-09	BUY	Market Buy	さくら損害保険株式会社	passive	16.0K	¥4,375	-0.1%	¥70M ($452K)
2026-04-09	BUY	Market Buy	光通信株式会社	passive	478.7K	¥4,375	-0.1%	¥313M ($2.0M)
2026-03-18	BUY	Market Buy	さくら損害保険株式会社	passive	16.0K	¥4,385	+2.3%	¥69M ($442K)
2026-03-18	BUY	Market Buy	光通信株式会社	passive	407.0K	¥4,385	-2.3%	¥1.7B ($11.3M)
2026-03-04	BUY	Market Buy	光通信株式会社	passive	334.2K	¥4,265	+0.5%	¥1.4B ($9.2M)
2026-03-04	BUY	Market Buy	さくら損害保険株式会社	passive	16.0K	¥4,265	+0.5%	¥69M ($442K)
2026-01-22	SELL	Market Buy	SBIインベストメント株式会社	passive	384.7K	¥3,725	-15.0%	¥1.6B ($10.6M)
2026-01-22	SELL	Market Buy	レオス・キャピタルワークス株式会社	other	0	¥3,725	-15.0%	-
2026-01-22	SELL	Market Buy	株式会社SBI証券	other	79.4K	¥3,725	-15.0%	¥340M ($2.2M)
2025-12-19	SELL	Market Buy	レオス・キャピタルワークス株式会社	passive	44.2K	¥2,733	-56.8%	¥189M ($1.2M)
2025-12-19	BUY	Market Buy	株式会社SBI証券	other	88.5K	¥2,733	+56.8%	¥379M ($2.4M)
2025-12-19	BUY	Market Buy	SBIインベストメント株式会社	passive	384.7K	¥2,733	-56.8%	¥1.6B ($10.6M)
2025-12-17	BUY	Market Buy	株式会社SBI証券	other	64.9K	¥2,493	+71.9%	¥278M ($1.8M)
2025-12-17	SELL	Market Buy	レオス・キャピタルワークス株式会社	passive	148.3K	¥2,493	-71.9%	¥635M ($4.1M)
2025-12-17	BUY	Market Buy	SBIインベストメント株式会社	passive	384.7K	¥2,493	-71.9%	¥1.6B ($10.6M)
2025-12-16	SELL	unknown	鴨林広軌 Hiroki Kamobayashi	activist	2.3M	¥2,515	-70.4%	¥344M ($2.2M)
2025-12-16	SELL	unknown	鴨林広軌 Hiroki Kamobayashi	activist	2.3M	¥2,515	-70.4%	¥171M ($1.1M)
2025-12-16	BUY	unknown	鴨林広軌 Hiroki Kamobayashi	activist	2.3M	¥2,515	+70.4%	¥344M ($2.2M)
2025-12-16	BUY	unknown	鴨林広軌 Hiroki Kamobayashi	activist	2.3M	¥2,515	+70.4%	¥171M ($1.1M)
2025-12-15	SELL	Market Buy	レオス・キャピタルワークス株式会社	passive	252.0K	¥2,634	-62.7%	¥1.1B ($7.0M)
2025-12-15	BUY	Market Buy	株式会社SBI証券	other	51.1K	¥2,634	+62.7%	¥219M ($1.4M)
2025-12-15	BUY	Market Buy	SBIインベストメント株式会社	passive	384.7K	¥2,634	-62.7%	¥1.6B ($10.6M)
2025-12-10	SELL	Market Buy	レオス・キャピタルワークス株式会社	passive	338.3K	¥2,550	-68.0%	¥1.4B ($9.4M)
2025-12-10	SELL	Market Buy	株式会社SBI証券	other	29.9K	¥2,550	-68.0%	¥128M ($827K)
2025-12-10	BUY	Market Buy	SBIインベストメント株式会社	passive	384.7K	¥2,550	-68.0%	¥1.6B ($10.6M)
2025-12-08	BUY	Market Buy	レオス・キャピタルワークス株式会社	passive	408.3K	¥2,637	-62.5%	¥1.7B ($11.3M)
2025-12-08	BUY	Market Buy	株式会社SBI証券	other	36.4K	¥2,637	+62.5%	¥156M ($1.0M)
2025-12-08	SELL	Market Buy	SBIインベストメント株式会社	passive	384.7K	¥2,637	-62.5%	¥1.6B ($10.6M)
2025-12-08	BUY	Market Buy	レオス・キャピタルワークス株式会社	passive	408.3K	¥2,637	-62.5%	¥1.7B ($11.3M)
2025-12-08	BUY	Market Buy	株式会社SBI証券	other	36.4K	¥2,637	+62.5%	¥156M ($1.0M)
2025-12-08	SELL	Market Buy	SBIインベストメント株式会社	passive	384.7K	¥2,637	-62.5%	¥1.6B ($10.6M)
2025-12-05	SELL	Market Buy	レオス・キャピタルワークス株式会社 RHEOS CAPITAL WORKS Inc.	passive	428.3K	¥2,812	-52.4%	¥231M ($1.5M)
2025-10-20	BUY	subscription	梅林真如 Umebayashi Masanao	activist	234.2K	¥4,050	+5.8%	¥945M ($6.1M)
2025-10-20	SELL	subscription	梅林真如 Umebayashi Masanao	activist	234.2K	¥4,050	-5.8%	¥945M ($6.1M)
2025-08-22	SELL	Market Buy	レオス・キャピタルワークス株式会社 RHEOS CAPITAL WORKS Inc.	passive	508.3K	¥5,050	+15.2%	¥419M ($2.7M)
2025-06-05	SELL	unknown	鴨林広軌 Hiroki Kamobayashi	activist	2.3M	¥4,850	+11.7%	¥484M ($3.1M)

Showing the 50 most recent of 87 filings.

Frequently asked questions

Who has been buying Arent Inc. stock?: 11 distinct investors have filed 23 disclosed large-shareholding filings in Arent Inc. (5254), most recently on 2026-04-22. 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 Arent Inc. have?: Arent Inc. has 23 buy-side and 32 sell-side disclosures on record, covering ¥16.1B ($103.8M) in total reported value, spanning 2023-03-29 to 2026-04-22.
Where does StockDrifts get Arent 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 Arent Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.