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JANUS HENDERSON GROUP PLC
> ALTR
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Altair Engineering Inc. | ALTR | 1,326,670 | -265,514 | 100,613,905,000 | 28,217,162,000 | $75,839.44 |
| 12/31/2022 | Altair Engineering Inc. | ALTR | 1,592,184 | -7,828 | 72,396,743,000 | 72,325,990,000 | $45,470.09 |
| 09/30/2022 | Altair Engineering Inc. | ALTR | 1,600,012 | 205 | 70,753,000 | -13,237,000 | $44.22 |
| 06/30/2022 | Altair Engineering Inc. | ALTR | 1,599,807 | 4,222 | 83,990,000 | -18,765,000 | $52.50 |
| 03/31/2022 | Altair Engineering Inc. | ALTR | 1,595,585 | -75,874 | 102,755,000 | -26,484,000 | $64.40 |
| 12/31/2021 | Altair Engineering Inc. | ALTR | 1,671,459 | -184,694 | 129,239,000 | 1,276,000 | $77.32 |
| 09/30/2021 | Altair Engineering Inc. | ALTR | 1,856,153 | -134,040 | 127,963,000 | -9,301,000 | $68.94 |
| 06/30/2021 | Altair Engineering Inc. | ALTR | 1,990,193 | -21,352 | 137,264,000 | 11,402,000 | $68.97 |
| 03/31/2021 | Altair Engineering Inc. | ALTR | 2,011,545 | -286,427 | 125,862,000 | -7,834,000 | $62.57 |
| 12/31/2020 | Altair Engineering Inc. | ALTR | 2,297,972 | -62,481 | 133,696,000 | 34,604,000 | $58.18 |
| 09/30/2020 | Altair Engineering Inc. | ALTR | 2,360,453 | -186,615 | 99,092,000 | -2,154,000 | $41.98 |
| 06/30/2020 | Altair Engineering Inc. | ALTR | 2,547,068 | 57,433 | 101,246,000 | 35,271,000 | $39.75 |
| 03/31/2020 | Altair Engineering Inc. | ALTR | 2,489,635 | 971,153 | 65,975,000 | 11,446,000 | $26.50 |
| 12/31/2019 | Altair Engineering Inc. | ALTR | 1,518,482 | 803,524 | 54,529,000 | 29,777,000 | $35.91 |
| 09/30/2019 | Altair Engineering Inc. | ALTR | 714,958 | 714,958 | 24,752,000 | 24,752,000 | $34.62 |
| 06/30/2019 | Altair Engineering Inc. | ALTR | 0 | -598,860 | 0 | -22,044,000 | |
| 03/31/2019 | Altair Engineering Inc. | ALTR | 598,860 | 87,374 | 22,044,000 | 7,937,000 | $36.81 |
| 12/31/2018 | Altair Engineering Inc. | ALTR | 511,486 | -2,880 | 14,107,000 | -8,242,000 | $27.58 |
| 09/30/2018 | Altair Engineering Inc. | ALTR | 514,366 | -154 | 22,349,000 | 4,763,000 | $43.45 |
| 06/30/2018 | Altair Engineering Inc. | ALTR | 514,520 | 112,872 | 17,586,000 | 4,990,000 | $34.18 |
| 03/31/2018 | Altair Engineering Inc. | ALTR | 401,648 | 74,586 | 12,596,000 | 4,773,000 | $31.36 |
| 12/31/2017 | Altair Engineering Inc. | ALTR | 327,062 | 327,062 | 7,823,000 | 7,823,000 | $23.92 |
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