Who has been buying Lifenet Insurance Company stock?

15 distinct investors have filed 51 disclosed large-shareholding filings in Lifenet Insurance Company (7157), most recently on 2026-05-13. 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 Lifenet Insurance Company have?

Lifenet Insurance Company has 51 buy-side and 33 sell-side disclosures on record, covering ¥21.5B ($138.5M) in total reported value, spanning 2021-04-06 to 2026-05-13.

Where does StockDrifts get Lifenet Insurance Company 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.

Lifenet Insurance Company 7157

Company

ライフネット生命株式会社Lifenet Insurance Company

Investors

Buys

Total Value

¥21.5B ($138.5M)

Avg Return

+141.36%

Last Filing

2026-05-13

Lifenet Insurance Company (7157) has 51 disclosed large-shareholding filings and 33 disclosed disposals on record, filed by 15 distinct investors. Together those filings cover ¥21.5B ($138.5M) in reported transaction value. The earliest filing StockDrifts holds for Lifenet Insurance Company is dated 2021-04-06; the most recent is 2026-05-13. 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 +141.36%, 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
2026-06-22	SELL	unknown	auフィナンシャルホールディングス株式会社 au Financial Holdings Corporation	unknown	0	¥1,642	-0.2%	¥24.2B ($156.0M)
2026-06-19	BUY	subscription	日本航空株式会社 Japan Airlines Co., Ltd.	activist	14.7M	¥1,673	-1.7%	¥24.6B ($158.9M)
2026-05-13	BUY	Market Buy	ありあけキャピタル株式会社 Ariake Capital	activist	5.9M	¥1,680	+2.5%	¥364M ($2.4M)
2026-05-01	BUY	unknown	auフィナンシャルホールディングス株式会社 au Financial Holdings Corporation	strategic	14.7M	¥1,857	-7.9%	¥27.3B ($176.4M)
2026-04-13	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	17.0M	¥2,176	-16.8%	¥36.9B ($238.3M)
2026-04-10	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	17.0M	¥2,187	-17.2%	¥37.1B ($239.5M)
2026-02-26	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	17.0M	¥2,150	+1.6%	¥674M ($4.3M)
2026-01-13	SELL	unknown	auフィナンシャルホールディングス株式会社 au Financial Holdings Corporation	strategic	14.7M	¥1,996	-9.5%	¥16M ($103K)
2025-04-15	BUY	Market Buy	ありあけキャピタル株式会社 Ariake Capital	activist	5.7M	¥1,649	+32.5%	¥1.4B ($8.9M)
2024-08-05	BUY	Market Buy	ありあけキャピタル株式会社 Ariake Capital	activist	4.9M	¥1,271	+71.9%	¥1.1B ($6.8M)
2024-08-01	SELL	Market Buy	三井住友カード株式会社 Sumitomo Mitsui Card Co., Ltd.	strategic	4.0M	¥1,657	-31.9%	¥53M ($343K)
2024-08-01	SELL	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	584.8K	¥1,657	-31.9%	¥1.3B ($8.2M)
2024-06-25	BUY	Market Buy	ありあけキャピタル株式会社 Ariake Capital	activist	4.0M	¥1,636	+33.6%	¥6.6B ($42.7M)
2024-06-25	BUY	Market Buy	ありあけキャピタル株式会社 Ariake Capital	activist	4.0M	¥1,636	+33.6%	¥6.6B ($42.7M)
2024-05-23	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	16.6M	¥1,373	+59.1%	¥1.1B ($7.3M)
2024-03-27	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	15.8M	¥1,534	+42.4%	¥185M ($1.2M)
2024-01-09	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	15.7M	¥1,150	+90.0%	¥766M ($4.9M)
2023-11-24	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	10.6M	¥1,028	+112.5%	¥2.9B ($18.7M)
2023-11-07	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	15.0M	¥990	+120.7%	¥111M ($718K)
2023-11-02	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	14.9M	¥963	+126.9%	¥433M ($2.8M)
2023-10-23	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	14.5M	¥889	+145.8%	¥271M ($1.7M)
2023-10-12	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	14.2M	¥970	+125.3%	¥413M ($2.7M)
2023-10-03	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	13.7M	¥917	+138.3%	¥191M ($1.2M)
2023-09-27	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	13.4M	¥935	+133.7%	¥834M ($5.4M)
2023-09-22	BUY	Market Buy	三井住友カード株式会社 Sumitomo Mitsui Card Co., Ltd.	strategic	4.0M	¥963	+126.9%	¥3.9B ($24.9M)
2023-09-22	SELL	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	12.5M	¥963	-126.9%	¥958M ($6.2M)
2023-09-22	BUY	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	1.3M	¥963	+126.9%	¥1.3B ($8.4M)
2023-09-15	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	11.8M	¥994	+119.8%	¥777M ($5.0M)
2023-09-15	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	11.9M	¥994	+119.8%	¥97M ($626K)
2023-09-13	SELL	unknown	auフィナンシャルホールディングス株式会社 au Financial Holdings Corporation	strategic	12.8M	¥997	-119.2%	¥1.9B ($12.4M)
2023-09-11	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	11.0M	¥991	+120.5%	¥10.9B ($70.2M)
2023-09-08	BUY	negotiated	株式会社セブン・フィナンシャルサービス SEVEN FINANCIAL SERVICE Co.,Ltd.	strategic	3.3M	¥987	+121.4%	¥482M ($3.1M)
2023-09-07	SELL	negotiated	株式会社セブン・フィナンシャルサービス SEVEN FINANCIAL SERVICE Co.,Ltd.	strategic	3.3M	¥989	-120.9%	¥483M ($3.1M)
2023-08-28	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	11.0M	¥1,048	+108.5%	¥271M ($1.7M)
2023-07-11	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	10.7M	¥992	+120.3%	¥10.6B ($68.5M)
2023-06-14	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	6.8M	¥1,016	+115.1%	¥2.3B ($14.7M)
2023-06-09	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	10.7M	¥1,008	+116.8%	¥10.8B ($69.6M)
2023-06-02	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	10.7M	¥957	+128.3%	¥10.2B ($66.1M)
2023-05-31	BUY	unknown	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	4.5M	¥890	+145.5%	¥4.0B ($26.0M)
2023-04-11	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	10.7M	¥1,212	+80.3%	¥13.0B ($83.7M)
2023-04-10	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	10.7M	¥1,178	+85.5%	¥12.6B ($81.4M)
2023-03-27	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	10.7M	¥1,157	+88.8%	¥12.4B ($79.9M)
2023-03-09	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	10.7M	¥1,172	+86.4%	¥12.6B ($81.0M)
2023-02-22	SELL	unknown	スイス・リインシュアランス・カンパニー・リミテッド(Swiss Reinsurance Company Ltd) Swiss Reinsurance Company Ltd	other	0	¥1,223	-78.7%	¥8.0B ($51.6M)
2023-02-22	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	10.7M	¥1,223	+78.7%	¥13.1B ($84.5M)
2023-01-25	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	10.7M	¥1,320	+65.5%	¥14.1B ($91.2M)
2023-01-12	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	10.7M	¥1,138	+92.0%	¥12.2B ($78.6M)
2023-01-11	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	10.7M	¥1,153	+89.5%	¥12.3B ($79.7M)
2023-01-10	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	10.7M	¥1,160	+88.4%	¥12.4B ($80.1M)
2023-01-10	BUY	Market Buy	エフィッシモキャピタルマネージメントピーティーイーエルティーディー(Effissimo Capital Management Pte. Ltd.) Effissimo Capital Management Pte. Ltd.	passive	10.7M	¥1,160	+88.4%	¥12.4B ($80.1M)

Showing the 50 most recent of 157 filings.

Frequently asked questions

Who has been buying Lifenet Insurance Company stock?: 15 distinct investors have filed 51 disclosed large-shareholding filings in Lifenet Insurance Company (7157), most recently on 2026-05-13. 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 Lifenet Insurance Company have?: Lifenet Insurance Company has 51 buy-side and 33 sell-side disclosures on record, covering ¥21.5B ($138.5M) in total reported value, spanning 2021-04-06 to 2026-05-13.
Where does StockDrifts get Lifenet Insurance Company 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 Lifenet Insurance Company. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.