StockDriftsStockDriftsistyle Inc. (3660) has 42 disclosed large-shareholding filings and 57 disclosed disposals on record, filed by 19 distinct investors. Together those filings cover ¥52.1B ($336.0M) in reported transaction value. The earliest filing StockDrifts holds for istyle Inc. is dated 2021-04-06; the most recent is 2026-05-12. Across these filings the average return since disclosure is +8.52%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Purpose | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2026-09-07 | BUY | Market Buy | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 6.3M | ¥519 | -7.1% | ¥565M ($3.6M) |
| 2026-09-04 | BUY | unknown | 株式会社ワイ | activist | 12.2M | ¥534 | - | - |
| 2026-09-04 | SELL | unknown | 吉松 徹郎 | activist | 7.5M | ¥534 | +9.7% | ¥93M ($601K) |
| 2026-09-04 | BUY | unknown | 株式会社Y2 | activist | 4.5M | ¥534 | - | ¥2.4B ($15.6M) |
| 2026-09-04 | BUY | unknown | 株式会社ワイ | activist | 12.2M | ¥534 | - | - |
| 2026-09-04 | SELL | unknown | 吉松 徹郎 | activist | 2.8M | ¥534 | +9.7% | ¥2.4B ($15.4M) |
| 2026-08-21 | SELL | unknown | 株式会社 三井住友銀行 | other | 0 | ¥533 | +9.6% | ¥531M ($3.4M) |
| 2026-08-21 | SELL | unknown | SMBC日興証券株式会社 | other | 47.3K | ¥533 | +9.6% | ¥257M ($1.7M) |
| 2026-08-21 | BUY | Market Buy | 三井住友DSアセットマネジメント株式会社 | passive | 4.7M | ¥533 | -9.6% | ¥164M ($1.1M) |
| 2026-08-20 | SELL | subscription | アマゾン・ドット・コム・インク(Amazon.com, Inc.) Amazon.com, Inc. | other | 9.5M | ¥537 | +10.2% | ¥16.5B ($106.7M) |
| 2026-07-07 | BUY | Market Buy | 三井住友DSアセットマネジメント株式会社 | passive | 4.3M | ¥400 | +20.5% | ¥1.7B ($11.2M) |
| 2026-07-07 | BUY | unknown | 株式会社 三井住友銀行 | other | 1.0M | ¥400 | +20.5% | ¥400M ($2.6M) |
| 2026-07-07 | BUY | unknown | SMBC日興証券株式会社 | other | 531.7K | ¥400 | +20.5% | ¥213M ($1.4M) |
| 2026-07-07 | BUY | unknown | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 5.2M | ¥400 | +20.5% | ¥2.1B ($13.5M) |
| 2026-07-02 | SELL | unknown | 吉松 徹郎 | activist | 7.6M | ¥390 | -23.6% | ¥96M ($620K) |
| 2026-07-02 | SELL | unknown | 株式会社ワイ | activist | 12.2M | ¥390 | -23.6% | ¥52M ($336K) |
| 2026-05-12 | SELL | unknown | アセットマネジメントOne株式会社 | other | 5.1M | ¥412 | -17.0% | ¥689M ($4.4M) |
| 2026-05-12 | SELL | unknown | みずほ証券 株式会社 | other | 42.6K | ¥412 | -17.0% | ¥30M ($191K) |
| 2026-03-19 | BUY | unknown | ソシエテ・ジェネラル証券株式会社 | other | 1.3M | ¥419 | - | ¥539M ($3.5M) |
| 2026-03-19 | BUY | unknown | ソシエテ ジェネラル | other | 3.0M | ¥419 | - | ¥1.2B ($8.0M) |
| 2026-03-19 | SELL | unknown | ソシエテ・ジェネラル証券株式会社 | other | 1.3M | ¥419 | -15.0% | ¥4M ($28K) |
| 2026-03-19 | SELL | unknown | ソシエテ ジェネラル | other | 3.0M | ¥419 | -15.0% | ¥460M ($3.0M) |
| 2026-03-05 | BUY | unknown | ソシエテ・ジェネラル証券株式会社 | other | 1.3M | ¥448 | +7.6% | ¥579M ($3.7M) |
| 2026-03-05 | BUY | unknown | ソシエテ ジェネラル | other | 4.1M | ¥448 | +7.6% | ¥1.8B ($11.7M) |
| 2026-03-05 | BUY | unknown | ソシエテ・ジェネラル証券株式会社 | other | 1.3M | ¥448 | +7.6% | ¥579M ($3.7M) |
| 2026-03-05 | BUY | unknown | ソシエテ ジェネラル | other | 4.1M | ¥448 | +7.6% | ¥1.8B ($11.7M) |
| 2025-10-10 | BUY | unknown | 吉松 徹郎 Tetsuro Yoshimatsu | activist | 7.6M | ¥465 | - | - |
| 2025-10-10 | BUY | unknown | 株式会社ワイ kabushikikaisha wai | activist | 12.2M | ¥465 | - | - |
| 2025-10-07 | SELL | unknown | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 6.4M | ¥469 | -2.8% | ¥490M ($3.2M) |
| 2025-10-07 | BUY | unknown | みずほ証券 株式会社 Mizuho Securities Co., Ltd. | other | 109.2K | ¥469 | - | ¥51M ($330K) |
| 2025-09-16 | SELL | unknown | 吉松 徹郎 Tetsuro Yoshimatsu | activist | 7.6M | ¥514 | +6.2% | ¥226M ($1.5M) |
| 2025-09-16 | SELL | unknown | 株式会社ワイ kabushikikaisha wai | activist | 12.2M | ¥514 | +6.2% | ¥347M ($2.2M) |
| 2025-09-11 | SELL | unknown | 三井物産株式会社 Mitsui & Co., LTD. | activist | 5.7M | ¥519 | +7.1% | ¥840M ($5.4M) |
| 2025-09-01 | BUY | unknown | 吉松 徹郎 Tetsuro Yoshimatsu | activist | 7.6M | ¥614 | - | - |
| 2025-09-01 | SELL | unknown | 吉松 徹郎 Tetsuro Yoshimatsu | activist | 7.6M | ¥614 | +21.5% | ¥1.2B ($7.4M) |
| 2025-09-01 | BUY | unknown | 吉松 徹郎 Tetsuro Yoshimatsu | activist | 7.6M | ¥614 | - | - |
| 2025-09-01 | BUY | unknown | 吉松 徹郎 Tetsuro Yoshimatsu | activist | 7.6M | ¥614 | - | - |
| 2025-09-01 | SELL | unknown | 株式会社ワイ kabushikikaisha wai | activist | 12.2M | ¥614 | +21.5% | ¥368M ($2.4M) |
| 2025-09-01 | BUY | unknown | 株式会社ワイ kabushikikaisha wai | activist | 12.2M | ¥614 | - | - |
| 2025-09-01 | BUY | unknown | 株式会社ワイ kabushikikaisha wai | activist | 12.2M | ¥614 | - | - |
| 2025-09-01 | SELL | unknown | 株式会社ワイ kabushikikaisha wai | activist | 12.2M | ¥614 | +21.5% | ¥6M ($36K) |
| 2025-07-17 | SELL | unknown | 吉松 徹郎 Tetsuro Yoshimatsu | activist | 9.6M | ¥552 | +12.7% | ¥1.0B ($6.7M) |
| 2025-07-17 | SELL | unknown | 株式会社ワイ kabushikikaisha wai | activist | 12.2M | ¥552 | +12.7% | ¥790M ($5.1M) |
| 2025-07-07 | BUY | Market Buy | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 7.1M | ¥525 | -8.2% | ¥549M ($3.5M) |
| 2025-06-06 | SELL | unknown | ベイリー・ギフォード・アンド・カンパニー(Baillie Gifford & Co) Baillie Gifford & Co | other | 3.8M | ¥526 | +8.4% | ¥501M ($3.2M) |
| 2025-05-22 | SELL | unknown | アセットマネジメントOneインターナショナル Asset Management One International Ltd. | other | 84.3K | ¥523 | +7.8% | ¥29M ($186K) |
| 2025-05-22 | SELL | unknown | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 6.0M | ¥523 | +7.8% | ¥920M ($5.9M) |
| 2025-05-13 | SELL | subscription | アマゾン・ドット・コム・インク(Amazon.com, Inc.) Amazon.com, Inc. | other | 53.1M | ¥480 | -0.4% | ¥1.1B ($7.0M) |
| 2025-02-21 | SELL | unknown | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 6.9M | ¥481 | -0.2% | ¥468M ($3.0M) |
| 2025-02-21 | SELL | unknown | アセットマネジメントOneインターナショナル Asset Management One International Ltd. | other | 125.9K | ¥481 | -0.2% | ¥4M ($25K) |
Showing the 50 most recent of 158 filings.
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.