| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Dec 6, 2018 | Dec 5, 2018 | 000-51728 |
| 13F-NT | Open Document | Open Filing | Nov 14, 2018 | Sep 30, 2018 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Aug 14, 2018 | Jun 30, 2018 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | May 15, 2018 | Mar 31, 2018 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Feb 14, 2018 | Dec 31, 2017 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Nov 14, 2017 | Sep 30, 2017 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Aug 14, 2017 | Jun 30, 2017 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | May 15, 2017 | Mar 31, 2017 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Feb 14, 2017 | Dec 31, 2016 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Nov 14, 2016 | Sep 30, 2016 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Aug 15, 2016 | Jun 30, 2016 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | May 16, 2016 | Mar 31, 2016 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Feb 16, 2016 | Dec 31, 2015 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Nov 16, 2015 | Sep 30, 2015 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Aug 14, 2015 | Jun 30, 2015 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | May 15, 2015 | Mar 31, 2015 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Feb 17, 2015 | Dec 31, 2014 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Nov 14, 2014 | Sep 30, 2014 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Aug 14, 2014 | Jun 30, 2014 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | May 15, 2014 | Mar 31, 2014 | 028-13957 | |
| 13F-NT | Open Document | Open Filing | Feb 14, 2014 | Dec 31, 2013 | 028-13957 |