This page lists the SEC filings reported by Asset Management One Co., Ltd..
| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G | 2013-01-10 | DIAM Co., Ltd. | DCT Industrial Trust Inc. | 4,946,105 | 1.8% | EDGAR |
| SC 13G | 2012-01-19 | DIAM Co., Ltd. | DUPONT FABROS TECHNOLOGY, INC. | 996,818 | 1.6% | EDGAR |
| SC 13G | 2012-01-19 | DIAM Co., Ltd. | DCT Industrial Trust Inc. | 12,498,001 | 5.1% | EDGAR |
| SC 13G/A | 2011-01-18 | DIAM Co., Ltd. | AMERICAN CAMPUS COMMUNITIES INC | 3,298,552 | 4.9% | EDGAR |
| SC 13G/A | 2011-01-18 | DIAM Co., Ltd. | CORPORATE OFFICE PROPERTIES TRUST | 1,692,961 | 2.5% | EDGAR |
| SC 13G/A | 2011-01-18 | DIAM Co., Ltd. | DCT Industrial Trust Inc. | 12,302,471 | 5.7% | EDGAR |
| SC 13G | 2011-01-18 | DIAM Co., Ltd. | DUPONT FABROS TECHNOLOGY, INC. | 3,460,823 | 5.8% | EDGAR |
| SC 13G/A | 2010-01-21 | DIAM Co., Ltd. | CORPORATE OFFICE PROPERTIES TRUST | 3,458,400 | 5.9% | EDGAR |
| SC 13G/A | 2010-01-21 | DIAM Co., Ltd. | DCT Industrial Trust Inc. | 13,874,192 | 6.7% | EDGAR |
| SC 13G/A | 2010-01-21 | DIAM Co., Ltd. | AMERICAN CAMPUS COMMUNITIES INC | 3,653,098 | 7.0% | EDGAR |
| SC 13G | 2010-01-20 | DIAM Co., Ltd. | CORPORATE OFFICE PROPERTIES TRUST | 3,458,400 | 5.9% | EDGAR |
| SC 13G | 2010-01-20 | DIAM Co., Ltd. | DCT Industrial Trust Inc. | 13,874,192 | 6.7% | EDGAR |
| SC 13G | 2010-01-20 | DIAM Co., Ltd. | AMERICAN CAMPUS COMMUNITIES INC | 3,653,098 | 7.0% | EDGAR |
| SC 13G | 2010-01-19 | DIAM Co., Ltd. | CORPORATE OFFICE PROPERTIES TRUST | 3,458,400 | 5.9% | EDGAR |
| SC 13G | 2010-01-19 | DIAM Co., Ltd. | DCT Industrial Trust Inc. | 13,874,192 | 6.7% | EDGAR |
| SC 13G | 2010-01-19 | DIAM Co., Ltd. | AMERICAN CAMPUS COMMUNITIES INC | 3,653,098 | 7.0% | EDGAR |
| SC 13G | 2010-01-19 | DIAM Co., Ltd. | DCT Industrial Trust Inc. | 13,874,192 | 6.7% | EDGAR |
| SC 13G | 2009-11-12 | DIAM Co., Ltd. | CORPORATE OFFICE PROPERTIES TRUST | 1,881,489 | 3.6% | EDGAR |
| SC 13G | 2009-01-16 | DIAM Co., Ltd. | CORPORATE OFFICE PROPERTIES TRUST | 3,038,927 | 6.4% | EDGAR |
| SC 13G | 2009-01-16 | DIAM Co., Ltd. | DCT Industrial Trust Inc. | 8,135,176 | 4.7% | EDGAR |
- Form 13F-HR
- The 13F-HR report is filed quarterly to report securities held by the filer that fall under the SEC's 13F rules.
- Form SC 13D/G
- Reported by persons and groups who own 5% or more of any class of a company's outstanding shares. If the ownership changes by 1% or more, an amendment must be filed.
- Form 3, 4, and 5
- Form 3, 4, and 5 reports are filed to report insider transactions by company officers and directors, and any beneficial owners of more than ten percent of a company's shares. Form 3 is the initial report that must be filed when a person becomes an officer, director, or beneficial owner. Form 4 reports are used to report changes in ownership, while the Form 5 report is used for reporting transactions that should have been reported earlier in a Form 4 filing.