CIK: 0001286478 | VIENNA, VA
| Quarter | Form Type | Holdings | Value | Filed | SEC |
|---|---|---|---|---|---|
| 13F-HR | 254 | $852.7M | 2026-07-30 | SEC ↗ | |
| 13F-HR | 239 | $780.8M | 2026-05-11 | SEC ↗ | |
| 13F-HR | 243 | $757.1M | 2026-02-13 | SEC ↗ | |
| 13F-HR | 245 | $839.1M | 2025-11-07 | SEC ↗ | |
| 13F-HR | 257 | $835.3M | 2025-07-18 | SEC ↗ | |
| 13F-HR | 264 | $786.1M | 2025-05-14 | SEC ↗ | |
| 13F-HR | 253 | $838.9M | 2025-05-14 | SEC ↗ | |
| 13F-HR | 262 | $859.3M | 2024-11-15 | SEC ↗ | |
| 13F-HR | 277 | $805.9M | 2024-08-14 | SEC ↗ | |
| 13F-HR | 284 | $837.8M | 2024-05-13 | SEC ↗ | |
| 13F-HR | 280 | $796.6M | 2024-02-07 | SEC ↗ | |
| 13F-HR | 276 | $761.2M | 2023-11-08 | SEC ↗ | |
| 13F-HR | 286 | $813.4M | 2023-08-03 | SEC ↗ | |
| 13F-HR | 292 | $782.7M | 2023-05-01 | SEC ↗ | |
| 13F-HR | 292 | $713.5M | 2023-02-14 | SEC ↗ | |
| 13F-HR | 297 | $34.5M | 2022-11-14 | SEC ↗ | |
| 13F-HR | 283 | $32.9M | 2022-08-12 | SEC ↗ | |
| 13F-HR | 296 | $37.4M | 2022-05-16 | SEC ↗ | |
| 13F-HR | 303 | $41.6M | 2022-02-11 | SEC ↗ | |
| 13F-HR | 304 | $38.5M | 2021-10-21 | SEC ↗ | |
| 13F-HR | 301 | $40.4M | 2021-08-16 | SEC ↗ | |
| 13F-HR | 311 | $40.0M | 2021-04-23 | SEC ↗ | |
| 13F-HR | 307 | $34.3M | 2021-02-18 | SEC ↗ | |
| 13F-HR | 271 | $31.3M | 2020-12-11 | SEC ↗ | |
| 13F-HR | 253 | $30.3M | 2020-09-18 | SEC ↗ | |
| 13F-HR | 231 | $23.0M | 2020-05-14 | SEC ↗ | |
| 13F-HR | 273 | $25.5M | 2020-02-14 | SEC ↗ | |
| 13F-HR | 276 | $16.8M | 2019-11-13 | SEC ↗ | |
| 13F-HR | 276 | $23.9M | 2019-08-15 | SEC ↗ | |
| 13F-HR | 262 | $25.0M | 2019-05-16 | SEC ↗ | |
| 13F-HR | 282 | $24.4M | 2019-02-14 | SEC ↗ | |
| 13F-HR | 261 | $16.1M | 2018-11-13 | SEC ↗ | |
| 13F-HR | 240 | $14.0M | 2018-08-20 | SEC ↗ | |
| 13F-HR | 246 | $15.2M | 2018-05-14 | SEC ↗ | |
| 13F-HR | 270 | $16.6M | 2018-02-15 | SEC ↗ | |
| 13F-HR | 72 | $7.0M | 2017-10-27 | SEC ↗ | |
| 13F-HR | 83 | $6.8M | 2017-08-23 | SEC ↗ | |
| 13F-HR | 95 | $6.7M | 2017-05-09 | SEC ↗ | |
| 13F-HR | 97 | $3.8M | 2017-01-30 | SEC ↗ | |
| 13F-HR | 112 | $4.3M | 2016-11-10 | SEC ↗ | |
| 13F-HR | 116 | $4.2M | 2016-07-25 | SEC ↗ | |
| 13F-HR | 105 | $4.0M | 2016-04-28 | SEC ↗ | |
| 13F-HR | 99 | $3.4M | 2016-01-22 | SEC ↗ | |
| 13F-HR | 94 | $3.3M | 2015-10-30 | SEC ↗ | |
| 13F-HR | 82 | $2.8M | 2015-07-21 | SEC ↗ | |
| 13F-HR | 67 | $2.9M | 2015-04-27 | SEC ↗ | |
| 13F-HR | 60 | $2.0M | 2015-02-13 | SEC ↗ | |
| 13F-HR | 46 | $1.1M | 2014-10-31 | SEC ↗ | |
| 13F-HR | 34 | $601.4K | 2014-07-18 | SEC ↗ | |
| 13F-HR | 38 | $501.0K | 2014-05-13 | SEC ↗ | |
| 13F-HR | 38 | $483.3K | 2014-01-16 | SEC ↗ | |
| 13F-HR | 36 | $475.5K | 2013-10-23 | SEC ↗ | |
| 13F-HR | 38 | $515.3K | 2013-08-14 | SEC ↗ |