Matrix Capital Management Company, LP 13D and 13G filings for Altair Engineering Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime |
Transaction Date |
Type | Company Symbol |
Filed By Symbol |
Shares Owned % Owned |
Shares Vs. Prev Report | View |
| 2025-04-07 4:15 pm Sale |
2025-03-31 | 13G | Altair Engineering Inc. ALTR |
Matrix Capital Management Company, LP | 0 0.000% |
-12,430,000 (Position Closed) |
Filing |
| 2024-11-13 09:09 am Purchase |
2024-09-30 | 13G | Altair Engineering Inc. ALTR |
Matrix Capital Management Company, LP | 12,430,000 20.900% |
196,826 (+1.61%) |
Filing |
| 2024-02-13 4:15 pm Purchase |
2023-12-31 | 13G | Altair Engineering Inc. ALTR |
Matrix Capital Management Company, LP | 12,233,174 22.400% |
1,362,174 (+12.53%) |
Filing |
| 2023-02-13 4:05 pm Purchase |
2022-12-31 | 13G | Altair Engineering Inc. ALTR |
Matrix Capital Management Company, LP | 10,871,000 20.750% |
2,271,000 (+26.41%) |
Filing |
| 2022-02-14 12:05 pm Purchase |
2021-12-31 | 13G | Altair Engineering Inc. ALTR |
Matrix Capital Management Company, LP | 8,600,000 16.930% |
3,444,975 (+66.83%) |
Filing |
| 2021-02-16 10:00 am Purchase |
2020-12-31 | 13G | Altair Engineering Inc. ALTR |
Matrix Capital Management Company, LP | 5,155,025 11.920% |
2,762,300 (+115.45%) |
Filing |