StockDriftsStockDriftsTamai Steamship Co., Ltd. (9127) has 45 disclosed large-shareholding filings and 33 disclosed disposals on record, filed by 14 distinct investors. Together those filings cover ¥2.5B ($16.0M) in reported transaction value. The earliest filing StockDrifts holds for Tamai Steamship Co., Ltd. is dated 2022-06-03; the most recent is 2026-04-23. 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 +37.45%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Purpose | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2026-07-23 | BUY | Market Buy | GLOBAL MANAGEMENT PARTNERS LIMITED Global Management Partners Limited | activist | 138.2K | ¥2,809 | +10.9% | ¥55M ($357K) |
| 2026-06-15 | BUY | Market Buy | GLOBAL MANAGEMENT PARTNERS LIMITED Global Management Partners Limited | activist | 118.4K | ¥2,764 | -0.7% | ¥57M ($369K) |
| 2026-04-23 | BUY | Market Buy | GLOBAL MANAGEMENT PARTNERS LIMITED Global Management Partners Limited | passive | 97.7K | ¥2,830 | +9.2% | ¥276M ($1.8M) |
| 2026-04-06 | SELL | unknown | あいおいニッセイ同和損害保険株式会社 | strategic | 0 | ¥2,906 | -11.2% | ¥276M ($1.8M) |
| 2026-04-06 | SELL | unknown | 三井住友海上火災保険株式会社 | other | 0 | ¥2,906 | -11.2% | ¥68M ($442K) |
| 2026-03-31 | SELL | private | 株式会社フエル FUEL Inc | activist | 0 | ¥2,923 | -12.0% | ¥283M ($1.8M) |
| 2026-03-31 | SELL | Market Buy | ひびき・パース・アドバイザーズ・エスピーシー(Hibiki Path Advisors SPC) Hibiki Path Advisors SPC | activist | 28.9K | ¥2,923 | -12.0% | ¥421M ($2.7M) |
| 2026-03-31 | BUY | unknown | 日本ガスライン株式会社 Nippon Gas Line Co.,Ltd. | strategic | 118.6K | ¥2,923 | +12.0% | ¥347M ($2.2M) |
| 2026-03-31 | BUY | unknown | 日本ガスライン株式会社 Nippon Gas Line Co.,Ltd. | strategic | 118.6K | ¥2,923 | +12.0% | ¥347M ($2.2M) |
| 2026-03-27 | SELL | Market Buy | ソン ユウ ニン(Sun You Ning) Sun You Ning | passive | 35.0K | ¥3,630 | +23.1% | ¥645M ($4.2M) |
| 2026-03-27 | BUY | Market Buy | ソン ユウ ニン(Sun You Ning) Sun You Ning | passive | 35.0K | ¥3,630 | -23.1% | ¥645M ($4.2M) |
| 2026-02-10 | BUY | private | 株式会社フエル FUEL Inc | activist | 96.7K | ¥3,830 | -27.1% | ¥370M ($2.4M) |
| 2026-02-10 | BUY | private | 株式会社フエル FUEL Inc | activist | 96.7K | ¥3,830 | -27.1% | ¥370M ($2.4M) |
| 2026-01-22 | SELL | Market Buy | ひびき・パース・アドバイザーズ(Hibiki Path Advisors Pte. Ltd.) Hibiki Path Advisors Pte. Ltd. | activist | 0 | ¥3,250 | +14.1% | ¥536M ($3.5M) |
| 2026-01-22 | BUY | Market Buy | ひびき・パース・アドバイザーズ・エスピーシー(Hibiki Path Advisors SPC) Hibiki Path Advisors SPC | activist | 173.0K | ¥3,250 | -14.1% | ¥562M ($3.6M) |
| 2025-12-24 | BUY | Market Buy | ソン ユウ ニン(Sun You Ning) Sun You Ning | passive | 212.7K | ¥3,275 | -14.8% | ¥8M ($53K) |
| 2025-12-18 | BUY | Market Buy | ひびき・パース・アドバイザーズ(Hibiki Path Advisors Pte. Ltd.) Hibiki Path Advisors Pte. Ltd. | activist | 164.8K | ¥3,240 | -13.8% | ¥65M ($420K) |
| 2025-10-29 | BUY | Market Buy | ひびき・パース・アドバイザーズ(Hibiki Path Advisors Pte. Ltd.) Hibiki Path Advisors Pte. Ltd. | activist | 144.7K | ¥2,735 | +2.1% | ¥60M ($389K) |
| 2025-10-29 | BUY | Market Buy | ひびき・パース・アドバイザーズ(Hibiki Path Advisors Pte. Ltd.) Hibiki Path Advisors Pte. Ltd. | activist | 144.7K | ¥2,735 | +2.1% | ¥60M ($389K) |
| 2025-10-03 | BUY | Market Buy | ひびき・パース・アドバイザーズ(Hibiki Path Advisors Pte. Ltd.) Hibiki Path Advisors Pte. Ltd. | activist | 122.6K | ¥2,249 | +24.1% | ¥55M ($353K) |
| 2025-09-19 | BUY | Market Buy | ひびき・パース・アドバイザーズ(Hibiki Path Advisors Pte. Ltd.) Hibiki Path Advisors Pte. Ltd. | activist | 98.3K | ¥2,234 | +25.0% | ¥220M ($1.4M) |
| 2025-09-04 | SELL | unknown | 三豊運輸 株式会社 Mitoyo Transportation Co., Ltd. | other | 10.3K | ¥2,050 | -36.2% | ¥30M ($192K) |
| 2025-09-04 | SELL | unknown | 株式会社 エンタープライズマリタイム Enterprise Maritime Co., Ltd. | other | 13.4K | ¥2,050 | -36.2% | ¥23M ($146K) |
| 2025-09-04 | SELL | unknown | 株式会社 アイエスシー ISC Co., Ltd. | other | 43.0K | ¥2,050 | -36.2% | ¥27M ($171K) |
| 2025-09-02 | SELL | unknown | 三豊運輸 株式会社 Mitoyo Transportation Co., Ltd. | other | 24.8K | ¥2,042 | -36.7% | ¥25M ($163K) |
| 2025-09-02 | SELL | unknown | 株式会社 エンタープライズマリタイム Enterprise Maritime Co., Ltd. | other | 24.3K | ¥2,042 | -36.7% | ¥26M ($171K) |
| 2025-09-02 | SELL | unknown | 三豊運輸 株式会社 Mitoyo Transportation Co., Ltd. | other | 24.8K | ¥2,042 | -36.7% | ¥25M ($163K) |
| 2025-09-02 | SELL | unknown | 株式会社 エンタープライズマリタイム Enterprise Maritime Co., Ltd. | other | 24.3K | ¥2,042 | -36.7% | ¥26M ($171K) |
| 2025-09-02 | SELL | unknown | 株式会社 アイエスシー ISC Co., Ltd. | other | 55.9K | ¥2,042 | -36.7% | ¥17M ($109K) |
| 2025-09-02 | SELL | Market Buy | Benedict Beh Wei Hao | passive | 82.2K | ¥2,042 | -36.7% | ¥45M ($288K) |
| 2025-09-02 | SELL | unknown | 株式会社 アイエスシー ISC Co., Ltd. | other | 55.9K | ¥2,042 | -36.7% | ¥17M ($109K) |
| 2025-08-20 | SELL | Market Buy | Benedict Beh Wei Hao | passive | 104.0K | ¥2,738 | -2.0% | ¥54M ($348K) |
| 2025-07-23 | SELL | unknown | 楽天証券株式会社 Rakuten Securities Inc | other | 83.0K | ¥2,522 | -10.7% | ¥127M ($817K) |
| 2025-07-22 | BUY | Market Buy | Benedict Beh Wei Hao | passive | 123.7K | ¥2,555 | +9.3% | ¥316M ($2.0M) |
| 2025-07-18 | BUY | Market Buy | ソン ユウ ニン(Sun You Ning) Sun You Ning | passive | 210.2K | ¥2,400 | +16.3% | ¥64M ($410K) |
| 2025-07-16 | BUY | Market Buy | 三豊運輸 株式会社 Mitoyo Transportation Co., Ltd. | other | 37.1K | ¥2,392 | +16.7% | ¥16M ($104K) |
| 2025-07-16 | BUY | Market Buy | 株式会社 エンタープライズマリタイム Enterprise Maritime Co., Ltd. | other | 37.2K | ¥2,392 | +16.7% | ¥4M ($27K) |
| 2025-07-16 | BUY | unknown | 三豊運輸 株式会社 Mitoyo Transportation Co., Ltd. | other | 37.1K | ¥2,392 | +16.7% | ¥16M ($104K) |
| 2025-07-16 | BUY | unknown | 株式会社 エンタープライズマリタイム Enterprise Maritime Co., Ltd. | other | 37.2K | ¥2,392 | +16.7% | ¥4M ($27K) |
| 2025-07-16 | BUY | unknown | 三豊運輸 株式会社 Mitoyo Transportation Co., Ltd. | other | 37.1K | ¥2,392 | +16.7% | ¥16M ($104K) |
| 2025-07-16 | BUY | unknown | 株式会社 エンタープライズマリタイム Enterprise Maritime Co., Ltd. | other | 37.2K | ¥2,392 | +16.7% | ¥4M ($27K) |
| 2025-07-16 | BUY | unknown | 株式会社 アイエスシー ISC Co., Ltd. | other | 64.2K | ¥2,392 | +16.7% | ¥26M ($170K) |
| 2025-07-16 | BUY | unknown | 株式会社 アイエスシー ISC Co., Ltd. | other | 64.2K | ¥2,392 | +16.7% | ¥26M ($170K) |
| 2025-07-16 | BUY | Market Buy | 株式会社 アイエスシー ISC Co., Ltd. | other | 64.2K | ¥2,392 | +16.7% | ¥26M ($170K) |
| 2025-07-02 | BUY | unknown | 楽天証券株式会社 Rakuten Securities Inc | other | 133.3K | ¥2,152 | +29.7% | ¥287M ($1.9M) |
| 2025-06-30 | BUY | Market Buy | ソン ユウ ニン(Sun You Ning) Sun You Ning | passive | 183.8K | ¥2,066 | +35.1% | ¥46M ($296K) |
| 2025-06-20 | SELL | unknown | 楽天証券株式会社 Rakuten Securities Inc | other | 63.3K | ¥2,157 | -29.4% | ¥157M ($1.0M) |
| 2025-06-18 | BUY | Market Buy | ソン ユウ ニン(Sun You Ning) Sun You Ning | passive | 161.5K | ¥2,046 | +36.5% | ¥41M ($263K) |
| 2025-06-06 | BUY | Market Buy | ソン ユウ ニン(Sun You Ning) Sun You Ning | passive | 141.6K | ¥2,036 | +37.1% | ¥44M ($287K) |
| 2025-06-04 | BUY | Market Buy | 楽天証券株式会社 Rakuten Securities Inc | other | 136.2K | ¥2,030 | +37.5% | ¥40M ($261K) |
Showing the 50 most recent of 92 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 Tamai Steamship Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.