KaburadarBerkshire's Japanese trading houses tracker
Berkshire Hathaway holds its Japanese trading-house shares through its subsidiary National Indemnity Company, which files Large Shareholding Reports (大量保有報告書) in Japan through EDINET, the Financial Services Agency's disclosure system. In Kaburadar's EDINET record (since 2025-10-07), National Indemnity filed reports for 4 of the five trading houses, each showing a holding ratio of 10% or more (Mitsubishi Corporation, Mitsui & Co., Sumitomo Corporation, Marubeni Corporation). Holding ratios on this page are only the figures stated in those filed reports.
Holding ratios in the filed reports
Filer: National Indemnity Company (EDINET code E35979). Holding ratio = the shareholding ratio stated in the latest report recorded for each company (shares held relative to shares outstanding).
| Company | Holding ratio | Report date | EDINET doc ID | Stated purpose (original) |
|---|---|---|---|---|
| Mitsubishi Corporation 8058 | 11.06% | 2026-05-12 | S100Y33F | 純投資 (pure investment) |
| Mitsui & Co. 8031 | 10.83% | 2026-07-01 | S100YO0N | 純投資 (pure investment) |
| ITOCHU Corporation 8001 | No report by National Indemnity Company in Kaburadar's EDINET record (since 2025-10-07). Kaburadar's record starts in October 2025; earlier reports can be checked on EDINET. | |||
| Sumitomo Corporation 8053 | 10.30% | 2026-05-19 | S100Y4U6 | 純投資 (pure investment) |
| Marubeni Corporation 8002 | 10.32% | 2026-07-01 | S100YO1O | 純投資 (pure investment) |
The five trading houses: share prices (2026-10-29)
| Company | Price | 1 day | 20 days | 60 days | From 52-week high | Market cap |
|---|---|---|---|---|---|---|
| Mitsubishi Corporation 8058 | ¥4,908.0 ($31.13) | +1.26% | +2.9% | +2.7% | -16.6% | ¥17.97tn ($113.99bn) |
| Mitsui & Co. 8031 | ¥5,098.0 ($32.34) | +1.11% | +3.4% | +3.6% | -23.4% | ¥14.45tn ($91.65bn) |
| ITOCHU Corporation 8001 | ¥2,321.5 ($14.73) | +0.45% | +5.2% | +14.7% | -2.1% | ¥16.23tn ($102.93bn) |
| Sumitomo Corporation 8053 | ¥1,746.0 ($11.08) | -0.46% | -1.4% | +9.7% | -9.3% | ¥8.27tn ($52.48bn) |
| Marubeni Corporation 8002 | ¥4,998.0 ($31.70) | -0.87% | +3.6% | -3.8% | -20.7% | ¥8.13tn ($51.58bn) |
Prices: Yahoo! Finance quotes, as of the latest Kaburadar heatmap update (2026-10-30 09:01 JST (20:01 ET Oct 29)). "From 52-week high" = distance of the price from its 52-week high. Dollar figures use USD/JPY 157.65 (Yahoo! Finance, 2026-10-30 07:02 JST (18:02 ET Oct 29)). Price-to-book ratios are not shown because Kaburadar does not have a verified source for them.
Definitions and source
- Source: EDINET (Financial Services Agency of Japan), Large Shareholding Reports and change reports, recorded by Kaburadar every day since 2025-10-07.
- The stated purpose is quoted from the report as written (in Japanese) with an English gloss.
- Figures reported in the press are not used on this page; only the ratios in the filed reports are shown.
- Japanese pages: National Indemnity Company の大量保有 / 大量保有報告.