StockDriftsStockDriftsPOPER Co.,Ltd. (5134) has 14 disclosed large-shareholding filings and 6 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥1.9B ($12.2M) in reported transaction value. The earliest filing StockDrifts holds for POPER Co.,Ltd. is dated 2022-11-15; the most recent is 2026-04-07. Across these filings the average return since disclosure is -20.33%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Purpose | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2026-06-19 | BUY | Market Buy | 光通信株式会社 | passive | 39.4K | ¥467 | - | - |
| 2026-06-19 | BUY | Market Buy | 株式会社UH Partners 2 | passive | 75.4K | ¥467 | -0.6% | ¥8M ($50K) |
| 2026-06-19 | BUY | Market Buy | 株式会社UH6 | passive | 255.6K | ¥467 | - | - |
| 2026-06-19 | BUY | Market Buy | 株式会社EPARK | passive | 92.4K | ¥467 | -0.6% | ¥11M ($72K) |
| 2026-04-07 | BUY | Market Buy | 株式会社UH Partners 2 | passive | 58.9K | ¥543 | -14.6% | ¥2M ($11K) |
| 2026-04-07 | SELL | Market Buy | 光通信株式会社 | passive | 39.4K | ¥543 | +14.6% | ¥139M ($895K) |
| 2026-04-07 | BUY | Market Buy | 株式会社UH6 | passive | 255.6K | ¥543 | - | ¥139M ($895K) |
| 2026-04-07 | BUY | Market Buy | 株式会社EPARK | passive | 68.1K | ¥543 | -14.6% | ¥13M ($86K) |
| 2026-04-01 | BUY | Market Buy | 株式会社UH Partners 2 | passive | 55.5K | ¥525 | -11.6% | ¥6M ($39K) |
| 2026-04-01 | BUY | Market Buy | 光通信株式会社 | passive | 295.0K | ¥525 | - | - |
| 2026-04-01 | BUY | Market Buy | 株式会社EPARK | passive | 43.7K | ¥525 | -11.6% | ¥16M ($102K) |
| 2026-03-05 | BUY | Market Buy | 光通信株式会社 | passive | 295.0K | ¥470 | - | - |
| 2026-03-05 | BUY | Market Buy | 株式会社UH Partners 2 | passive | 44.3K | ¥470 | -1.3% | ¥13M ($83K) |
| 2026-03-05 | BUY | Market Buy | 株式会社EPARK | passive | 13.7K | ¥470 | - | ¥6M ($42K) |
| 2025-11-07 | SELL | unknown | 株式会社SBI証券 SBI SECURITIES Co.,Ltd. | other | 165.7K | ¥861 | +46.1% | ¥34M ($219K) |
| 2025-10-21 | SELL | unknown | 株式会社SBI証券 SBI SECURITIES Co.,Ltd. | other | 205.3K | ¥975 | +52.4% | ¥28M ($179K) |
| 2025-09-29 | BUY | Market Buy | 株式会社UH Partners 2 UH Partners 2, Inc. | passive | 17.0K | ¥1,010 | -54.1% | ¥6M ($36K) |
| 2025-09-29 | SELL | Market Buy | 光通信株式会社 Hikari Tsushin K.K. | passive | 295.0K | ¥1,010 | +54.1% | ¥2M ($10K) |
| 2025-03-21 | BUY | unknown | 株式会社SBI証券 SBI SECURITIES Co.,Ltd. | other | 232.9K | ¥884 | -47.5% | ¥206M ($1.3M) |
| 2024-08-15 | BUY | Market Buy | 光通信株式会社 Hikari Tsushin K.K. | passive | 295.0K | ¥584 | -20.6% | ¥20M ($129K) |
| 2024-08-15 | BUY | Market Buy | 株式会社UH Partners 2 UH Partners 2, Inc. | passive | 11.3K | ¥584 | - | ¥7M ($43K) |
| 2024-03-29 | SELL | unknown | 栗原 慎吾 Shingo Kurihara | activist | 1.1M | ¥661 | +29.8% | ¥29M ($184K) |
| 2023-09-15 | BUY | Market Buy | 光通信株式会社 Hikari Tsushin K.K. | passive | 259.5K | ¥722 | -35.7% | ¥45M ($291K) |
| 2023-09-07 | BUY | Market Buy | 光通信株式会社 Hikari Tsushin K.K. | passive | 197.1K | ¥671 | -30.9% | ¥132M ($853K) |
| 2023-02-14 | BUY | unknown | 学校法人駿河台学園 理事長 山﨑 良子 Surugadaigakuen | strategic | 564.5K | ¥759 | - | ¥69M ($442K) |
| 2023-02-14 | BUY | Market Buy | 学校法人駿河台学園 理事長 山﨑 良子 Surugadaigakuen | strategic | 564.5K | ¥759 | -38.9% | ¥69M ($442K) |
| 2022-11-30 | BUY | negotiated | 学校法人駿河台学園 surugadaigakuen | strategic | 464.5K | ¥859 | -46.0% | ¥399M ($2.6M) |
| 2022-11-21 | SELL | Market Buy | 大和企業投資株式会社 Daiwa Corporate Investment Co., Ltd. | passive | 188.8K | ¥904 | +48.7% | ¥156M ($1.0M) |
| 2022-11-17 | BUY | Market Buy | 大和企業投資株式会社 Daiwa Corporate Investment Co., Ltd. | passive | 361.2K | ¥998 | -53.5% | ¥360M ($2.3M) |
| 2022-11-15 | BUY | unknown | 栗原 慎吾 Shingo Kurihara | activist | 1.1M | ¥999 | -53.5% | ¥1.1B ($7.4M) |
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.