CIK: 0000887818 | WALTHAM, MA
| Quarter | Form Type | Holdings | Value | Filed | SEC |
|---|---|---|---|---|---|
| 13F-HR | 216 | $11.2B | 2026-10-30 | SEC ↗ | |
| 13F-HR | 205 | $10.6B | 2026-07-21 | SEC ↗ | |
| 13F-HR | 196 | $8.9B | 2026-05-05 | SEC ↗ | |
| 13F-HR | 196 | $9.9B | 2026-01-23 | SEC ↗ | |
| 13F-HR | 195 | $10.3B | 2025-11-10 | SEC ↗ | |
| 13F-HR | 162 | $9.1B | 2025-08-07 | SEC ↗ | |
| 13F-HR | 167 | $8.6B | 2025-04-17 | SEC ↗ | |
| 13F-HR | 172 | $9.2B | 2025-01-24 | SEC ↗ | |
| 13F-HR | 173 | $9.7B | 2024-10-10 | SEC ↗ | |
| 13F-HR | 170 | $8.8B | 2024-07-23 | SEC ↗ | |
| 13F-HR | 169 | $8.7B | 2024-04-12 | SEC ↗ | |
| 13F-HR | 162 | $8.1B | 2024-01-23 | SEC ↗ | |
| 13F-HR | 156 | $7.2B | 2023-11-07 | SEC ↗ | |
| 13F-HR | 142 | $6.8B | 2023-07-27 | SEC ↗ | |
| 13F-HR | 147 | $6.4B | 2023-05-08 | SEC ↗ | |
| 13F-HR | 146 | $6.6B | 2023-02-02 | SEC ↗ | |
| 13F-HR | 144 | $688.7M | 2022-11-04 | SEC ↗ | |
| 13F-HR | 144 | $509.3M | 2022-08-08 | SEC ↗ | |
| 13F-HR | 136 | $393.5M | 2022-05-13 | SEC ↗ | |
| 13F-HR | 133 | $76.3M | 2022-02-10 | SEC ↗ | |
| 13F-HR | 129 | $392.2M | 2021-11-12 | SEC ↗ | |
| 13F-HR | 126 | $420.5M | 2021-07-14 | SEC ↗ | |
| 13F-HR | 130 | $408.2M | 2021-05-10 | SEC ↗ | |
| 13F-HR | 128 | $382.9M | 2021-02-17 | SEC ↗ | |
| 13F-HR | 106 | $377.1M | 2020-10-19 | SEC ↗ | |
| 13F-HR | 109 | $378.5M | 2020-07-13 | SEC ↗ | |
| 13F-HR | 113 | $334.4M | 2020-04-16 | SEC ↗ | |
| 13F-HR | 117 | $371.9M | 2020-01-28 | SEC ↗ | |
| 13F-HR | 116 | $303.8M | 2019-10-22 | SEC ↗ | |
| 13F-HR | 130 | $302.0M | 2019-07-16 | SEC ↗ | |
| 13F-HR | 127 | $102.7M | 2019-04-09 | SEC ↗ | |
| 13F-HR | 127 | $211.5M | 2019-01-14 | SEC ↗ | |
| 13F-HR | 138 | $330.4M | 2018-10-10 | SEC ↗ | |
| 13F-HR | 158 | $365.5M | 2018-07-19 | SEC ↗ | |
| 13F-HR | 162 | $357.5M | 2018-04-05 | SEC ↗ | |
| 13F-HR | 166 | $364.9M | 2018-01-16 | SEC ↗ | |
| 13F-HR | 166 | $340.4M | 2017-10-11 | SEC ↗ | |
| 13F-HR | 165 | $295.7M | 2017-07-10 | SEC ↗ | |
| 13F-HR | 166 | $306.2M | 2017-04-21 | SEC ↗ | |
| 13F-HR | 176 | $234.9M | 2017-01-19 | SEC ↗ | |
| 13F-HR | 177 | $326.0M | 2016-10-26 | SEC ↗ | |
| 13F-HR | 176 | $289.3M | 2016-07-12 | SEC ↗ | |
| 13F-HR | 186 | $263.4M | 2016-04-27 | SEC ↗ | |
| 13F-HR | 182 | $234.9M | 2016-01-14 | SEC ↗ | |
| 13F-HR | 193 | $234.6M | 2015-10-14 | SEC ↗ | |
| 13F-HR | 189 | $243.3M | 2015-07-21 | SEC ↗ | |
| 13F-HR | 185 | $240.7M | 2015-04-13 | SEC ↗ | |
| 13F-HR | 180 | $241.4M | 2015-01-12 | SEC ↗ | |
| 13F-HR | 179 | $211.4M | 2014-11-04 | SEC ↗ | |
| 13F-HR | 174 | $217.7M | 2014-08-12 | SEC ↗ | |
| 13F-HR | 171 | $165.8M | 2014-05-15 | SEC ↗ | |
| 13F-HR | 165 | $158.1M | 2014-02-04 | SEC ↗ | |
| 13F-HR | 165 | $135.1M | 2013-10-16 | SEC ↗ | |
| 13F-HR | 162 | $136.6M | 2013-07-25 | SEC ↗ |