StockDriftsStockDriftsSimplex Holdings, Inc. (4373) has 26 disclosed large-shareholding filings and 32 disclosed disposals on record, filed by 15 distinct investors. Together those filings cover ¥29.5B ($190.2M) in reported transaction value. The earliest filing StockDrifts holds for Simplex Holdings, Inc. is dated 2021-09-22; the most recent is 2025-11-26. Across these filings the average return since disclosure is +54.97%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Purpose | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2025-11-26 | SELL | unknown | 五十嵐 充 Mitsuru Igarashi | strategic | 4.7M | ¥1,102.5 | -4.3% | ¥670M ($4.3M) |
| 2025-06-19 | SELL | unknown | 三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd. | other | 1.1M | ¥955 | -20.4% | ¥594M ($3.8M) |
| 2025-06-19 | SELL | unknown | 日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd. | other | 1.5M | ¥955 | -20.4% | ¥258M ($1.7M) |
| 2025-03-21 | SELL | unknown | 三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd. | other | 1.8M | ¥730.5 | -57.4% | ¥321M ($2.1M) |
| 2025-03-21 | SELL | unknown | 日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd. | other | 1.8M | ¥730.5 | -57.4% | ¥171M ($1.1M) |
| 2025-02-05 | SELL | negotiated | 金子 英樹 Hideki Kaneko | activist | 7.1M | ¥722.75 | -59.1% | ¥512M ($3.3M) |
| 2025-02-05 | BUY | negotiated | YK&Company株式会社 YK&Company Co., Ltd. | activist | 1.5M | ¥722.75 | - | - |
| 2025-02-05 | BUY | negotiated | TK&Company株式会社 TK&Company Co., Ltd. | activist | 1.5M | ¥722.75 | - | - |
| 2024-12-20 | SELL | negotiated | YK&Company株式会社 YK&Company Co., Ltd. | activist | 1.5M | ¥626.5 | -83.6% | ¥4M ($24K) |
| 2024-12-20 | SELL | negotiated | TK&Company株式会社 TK&Company Co., Ltd. | activist | 1.5M | ¥626.5 | -83.6% | ¥4M ($24K) |
| 2024-12-20 | SELL | negotiated | 金子 英樹 Hideki Kaneko | activist | 7.8M | ¥626.5 | -83.6% | ¥51M ($331K) |
| 2024-04-25 | SELL | negotiated | 金子 英樹 Hideki Kaneko | activist | 7.8M | ¥659 | -74.5% | ¥8M ($49K) |
| 2024-04-25 | BUY | negotiated | YK&Company株式会社 YK&Company Co., Ltd. | activist | 1.5M | ¥659 | - | - |
| 2024-04-25 | BUY | negotiated | TK&Company株式会社 TK&Company Co., Ltd. | activist | 1.5M | ¥659 | - | - |
| 2024-03-22 | SELL | unknown | 三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd. | other | 2.2M | ¥725.75 | -58.5% | ¥38M ($244K) |
| 2024-03-22 | BUY | unknown | 日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd. | other | 2.0M | ¥725.75 | +58.5% | ¥589M ($3.8M) |
| 2024-03-08 | SELL | negotiated | 金子 英樹 Hideki Kaneko | activist | 7.8M | ¥696.5 | -65.1% | ¥44M ($287K) |
| 2024-03-08 | SELL | negotiated | 金子 英樹 Hideki Kaneko | activist | 7.8M | ¥696.5 | -65.1% | ¥44M ($287K) |
| 2024-03-08 | SELL | negotiated | YK&Company株式会社 YK&Company Co., Ltd. | activist | 1.5M | ¥696.5 | -65.1% | ¥1.0B ($6.7M) |
| 2024-03-08 | BUY | negotiated | TK&Company株式会社 TK&Company Co., Ltd. | activist | 1.5M | ¥696.5 | +65.1% | ¥1.0B ($6.5M) |
| 2024-03-08 | SELL | negotiated | YK&Company株式会社 YK&Company Co., Ltd. | activist | 1.5M | ¥696.5 | -65.1% | ¥1.0B ($6.7M) |
| 2024-03-08 | BUY | negotiated | TK&Company株式会社 TK&Company Co., Ltd. | activist | 1.5M | ¥696.5 | +65.1% | ¥1.0B ($6.5M) |
| 2023-12-28 | SELL | negotiated | 金子 英樹 Hideki Kaneko | activist | 7.8M | ¥680 | -69.1% | ¥16M ($101K) |
| 2023-12-28 | SELL | negotiated | YK&Company株式会社 YK&Company Co., Ltd. | activist | 2.9M | ¥680 | -69.1% | ¥4M ($25K) |
| 2023-12-06 | SELL | unknown | 三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd. | other | 2.2M | ¥631.5 | -82.1% | ¥116M ($751K) |
| 2023-12-06 | BUY | unknown | 日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd. | other | 1.1M | ¥631.5 | +82.1% | ¥393M ($2.5M) |
| 2023-11-13 | SELL | unknown | 五十嵐 充 Mitsuru Igarashi | strategic | 5.2M | ¥604.75 | -90.2% | ¥721M ($4.7M) |
| 2023-09-05 | BUY | negotiated | 金子 英樹 Hideki Kaneko | activist | 7.8M | ¥734.75 | - | - |
| 2023-09-05 | BUY | negotiated | 金子 英樹 Hideki Kaneko | activist | 7.8M | ¥734.75 | +56.5% | ¥5.7B ($36.6M) |
| 2023-09-05 | BUY | negotiated | 合同会社H・Y・T・R LLC H・Y・T・R | activist | 2.9M | ¥734.75 | - | ¥2.1B ($13.8M) |
| 2023-09-05 | BUY | negotiated | 合同会社H・Y・T・R LLC H・Y・T・R | activist | 2.9M | ¥734.75 | - | - |
| 2023-08-18 | BUY | negotiated | 金子 英樹 Hideki Kaneko | activist | 7.8M | ¥650 | +76.9% | ¥5.0B ($32.3M) |
| 2023-08-18 | BUY | negotiated | 金子 英樹 Hideki Kaneko | activist | 7.8M | ¥650 | +76.9% | ¥5.0B ($32.3M) |
| 2023-08-18 | BUY | negotiated | 合同会社H・Y・T・R LLC H・Y・T・R | activist | 2.9M | ¥650 | - | ¥1.9B ($12.2M) |
| 2023-08-18 | BUY | negotiated | 合同会社H・Y・T・R LLC H・Y・T・R | activist | 2.9M | ¥650 | - | ¥1.9B ($12.2M) |
| 2023-05-12 | SELL | negotiated | 金子 英樹 Hideki Kaneko | activist | 10.7M | ¥602 | -91.0% | ¥429M ($2.8M) |
| 2023-04-10 | SELL | Market Buy | 株式会社刈田・アンド・カンパニー Katta & Company Co., Ltd. | passive | 1.3M | ¥607.5 | -89.3% | ¥130M ($838K) |
| 2023-04-10 | SELL | Market Buy | KARITA & Company Micronesia Inc. | passive | 917.5K | ¥607.5 | -89.3% | ¥92M ($595K) |
| 2023-04-10 | BUY | Market Buy | K&Cホールディングス株式会社 K&C Holdings Inc. | passive | 374.6K | ¥607.5 | +89.3% | ¥96M ($617K) |
| 2023-02-06 | BUY | Market Buy | SBIホールディングス株式会社 SBI Holdings, Inc. | passive | 3.0M | ¥606.25 | +89.7% | ¥1.8B ($11.9M) |
| 2023-01-26 | SELL | unknown | 五十嵐 充 Mitsuru Igarashi | strategic | 6.3M | ¥558.5 | -105.9% | ¥857M ($5.5M) |
| 2023-01-13 | BUY | unknown | 田中 健一 Kenichi Tanaka | strategic | 2.4M | ¥527.75 | - | ¥303M ($2.0M) |
| 2023-01-13 | SELL | unknown | 田中 健一 Kenichi Tanaka | strategic | 2.4M | ¥527.75 | -117.9% | ¥303M ($2.0M) |
| 2022-11-29 | SELL | unknown | 福井 康人 Yasuhito Fukui | strategic | 2.6M | ¥576.75 | -99.4% | ¥174M ($1.1M) |
| 2022-11-02 | SELL | negotiated | 金子 英樹 Hideki Kaneko | activist | 11.2M | ¥580.75 | -98.0% | ¥764M ($4.9M) |
| 2022-08-04 | BUY | unknown | 三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd. | other | 2.3M | ¥550.5 | +108.9% | ¥1.3B ($8.2M) |
| 2022-08-04 | BUY | unknown | 日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd. | other | 504.1K | ¥550.5 | +108.9% | ¥278M ($1.8M) |
| 2022-02-22 | SELL | unknown | フィデリティ投信株式会社 FIL Investments (Japan) Limited | other | 2.4M | ¥382.25 | -200.8% | ¥230M ($1.5M) |
| 2022-01-21 | SELL | Market Buy | 農林中央金庫 The Norinchukin Bank | strategic | 2.4M | ¥605.5 | -89.9% | ¥18M ($117K) |
| 2022-01-21 | BUY | Market Buy | 農林中金全共連アセットマネジメント株式会社 Norinchukin Zenkyoren Asset Management Co., Ltd. | passive | 101.7K | ¥605.5 | +89.9% | ¥3M ($20K) |
Showing the 50 most recent of 74 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.