CIK: 0000833018 | ARLINGTON, VA
| Quarter | Form Type | Holdings | Value | Filed | SEC |
|---|---|---|---|---|---|
| 13F-HR | 202 | $436.3M | 2016-02-16 | SEC ↗ | |
| 13F-HR | 199 | $432.3M | 2015-11-13 | SEC ↗ | |
| 13F-HR | 204 | $494.2M | 2015-08-14 | SEC ↗ | |
| 13F-HR | 198 | $479.6M | 2015-05-15 | SEC ↗ | |
| 13F-HR | 194 | $472.6M | 2015-02-09 | SEC ↗ | |
| 13F-HR | 194 | $415.8M | 2014-11-07 | SEC ↗ | |
| 13F-HR | 192 | $405.6M | 2014-08-08 | SEC ↗ | |
| 13F-HR | 193 | $357.6M | 2014-05-14 | SEC ↗ | |
Q4 2013Amended | 13F-HR/A | 190 | $361.6M | 2014-02-14 | SEC ↗ |
| 13F-HR | 185 | $334.2M | 2013-11-14 | SEC ↗ | |
| 13F-HR | 186 | $315.6M | 2013-08-14 | SEC ↗ |