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WIN-Partners Co., Ltd. 3183

Company
ウイン・パートナーズ株式会社WIN-Partners Co., Ltd.
Investors
4
Buys
5
Total Value
¥2.2B ($14.2M)
Avg Return
+13.93%
Last Filing
2025-07-07

WIN-Partners Co., Ltd. (3183) has 5 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥2.2B ($14.2M) in reported transaction value. The earliest filing StockDrifts holds for WIN-Partners Co., Ltd. is dated 2021-09-24; the most recent is 2025-07-07. Across these filings the average return since disclosure is +13.93%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-06-19BUYMarket Buy
フィデリティ マネジメント アンド リサーチ カンパニー エルエルシー
Fidelity Management & Research Company LLC
corporate2.4M¥1,225+4.2%¥75M ($482K)
2026-06-19BUYMarket Buy
フィデリティ マネジメント トラスト カンパニー
Fidelity Management Trust Company
other364.9K¥1,225+4.2%¥75M ($482K)
2026-06-19SELLunknown
フィデリティ マネジメント アンド リサーチ カンパニー エルエルシー
Fidelity Management & Research Company LLC
corporate2.3M¥1,225-4.2%¥359M ($2.3M)
2026-06-19SELLunknown
フィデリティ マネジメント トラスト カンパニー
Fidelity Management Trust Company
other305.7K¥1,225-4.2%¥142M ($916K)
2026-06-19SELLunknown
フィデリティ マネジメント アンド リサーチ カンパニー エルエルシー
Fidelity Management & Research Company LLC
corporate2.6M¥1,225-4.2%¥415M ($2.7M)
2026-06-19BUYMarket Buy
フィデリティ マネジメント トラスト カンパニー
Fidelity Management Trust Company
other420.7K¥1,225+4.2%¥415M ($2.7M)
2026-06-19BUYMarket Buy
フィデリティ マネジメント アンド リサーチ カンパニー エルエルシー
Fidelity Management & Research Company LLC
corporate3.0M¥1,225+4.2%¥684M ($4.4M)
2026-06-19BUYunknown
フィデリティ マネジメント トラスト カンパニー
Fidelity Management Trust Company
other81.7K¥1,225-¥100M ($646K)
2026-06-19SELLunknown
フィデリティ マネジメント アンド リサーチ カンパニー エルエルシー
Fidelity Management & Research Company LLC
corporate2.4M¥1,225-4.2%¥617M ($4.0M)
2026-06-19BUYunknown
フィデリティ・マネジメント・アンド・リサーチ・ジャパン株式会社
other640.0K¥1,225-¥784M ($5.1M)
2026-06-19BUYunknown
エフアイエーエム エルエルシー
FIAM LLC
other203.1K¥1,225-¥249M ($1.6M)
2025-07-07SELLMarket Buy
シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.)
Symphony Financial Partners (Singapore) Pte. Ltd.
passive0¥1,319+3.3%¥2.1B ($13.4M)
2025-06-27BUYMarket Buy
秋沢 英海
Hidemi Akizawa
activist901.3K¥1,382-7.7%¥4M ($27K)
2025-06-27BUYMarket Buy
有限会社オフィスA
Office A Limited Company
activist7.1M¥1,382-7.7%¥1.8B ($11.8M)
2025-06-20SELLMarket Buy
シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.)
Symphony Financial Partners (Singapore) Pte. Ltd.
passive1.6M¥1,341+4.8%¥798M ($5.1M)
2023-09-07BUYMarket Buy
シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.)
Symphony Financial Partners (Singapore) Pte. Ltd.
passive2.2M¥1,118+14.1%¥372M ($2.4M)
2022-02-07BUYMarket Buy
シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.)
Symphony Financial Partners (Singapore) Pte. Ltd.
passive1.8M¥993+28.5%¥303M ($2.0M)
2021-12-07BUYMarket Buy
シンフォニー・フィナンシャル・パートナーズ(シンガポール)ピーティーイー・リミテッド (Symphony Financial Partners (Singapore) Pte. Ltd.)
Symphony Financial Partners (Singapore) Pte. Ltd.
passive1.5M¥952+34.0%¥1.5B ($9.4M)
2021-09-24SELLMarket Buy
キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company)
Capital Research and Management Company
passive1.4M¥996-28.1%¥434M ($2.8M)

Frequently asked questions

Who has been buying WIN-Partners Co., Ltd. stock?
4 distinct investors have filed 5 disclosed large-shareholding filings in WIN-Partners Co., Ltd. (3183), most recently on 2025-07-07. 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 WIN-Partners Co., Ltd. have?
WIN-Partners Co., Ltd. has 5 buy-side and 3 sell-side disclosures on record, covering ¥2.2B ($14.2M) in total reported value, spanning 2021-09-24 to 2025-07-07.
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.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.