| 20-02-2025 | 
            AH | 
             | 
            ALTR | 
            Altair Engineering | 
            9,455 | 
            0.36 | 
            0.53 | 
            0.00 | 
            Altair Engineering Non-GAAP EPS of $0.52 beats by $0.01, revenue of $192.6M beats by $9.62M  [2/20/2025 5:49 PM] | 
            111.76 | 
            -0.02  (-0.02%) | 
            111.99 | 
            0.21  (0.19%) | 
            75.71 - 113.12 | 
            596,215 | 
            690,000 | 
            48,866 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 30-10-2024 | 
            AH | 
             | 
            ALTR | 
            Altair Engineering Inc. | 
            8,660 | 
            0.09 | 
            0.02 | 
            0.01 | 
            Altair Engineering Non-GAAP EPS of $0.24 beats by $0.08, revenue of $151.45M beats by $4.81M  [10/30/2024 5:18 PM] | 
            104.00 | 
            -4.63  (-4.26%) | 
            104.25 | 
            -4.38  (-4.03%) | 
            57.59 - 113.12 | 
            5,462,659 | 
            890,000 | 
            346,694 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 01-08-2024 | 
            AH | 
             | 
            ALTR | 
            Altair Engineering Inc. | 
            7,210 | 
            0.01 | 
            0.01 | 
            -0.15 | 
            Altair Engineering Non-GAAP EPS of $0.16 beats by $0.01, revenue of $148.8M beats by $2.07M  [8/1/2024 5:15 PM] | 
            82.72 | 
            -2.60  (-3.05%) | 
            82.00 | 
            -3.32  (-3.89%) | 
            57.59 - 101.39 | 
            674,364 | 
            480,000 | 
            7,672 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 02-05-2024 | 
            AH | 
             | 
            ALTR | 
            Altair Engineering Inc. | 
            6,800 | 
            0.27 | 
            0.18 | 
            0.13 | 
            Altair Engineering Non-GAAP EPS of $0.40 beats by $0.05, revenue of $172.91M beats by $2.69M  [5/2/2024 4:46 PM] | 
            81.48 | 
            -0.27  (-0.33%) | 
            81.75 | 
            0.0  (0.00%) | 
            57.59 - 92.92 | 
            308,488 | 
            430,000 | 
            46,491 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 22-02-2024 | 
            AH | 
             | 
            ALTR | 
            Altair Engineering Inc. | 
            7,390 | 
            0.29 | 
            0.22 | 
            0.14 | 
            Altair Engineering GAAP EPS of $0.46 beats by $0.27, revenue of $171.5M misses by $1.05M  [2/22/2024 4:20 PM] | 
            85.50 | 
            -4.36  (-4.85%) | 
            88.70 | 
            -1.16  (-1.29%) | 
            55.33 - 92.92 | 
            850,955 | 
            430,000 | 
            22,720 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 02-11-2023 | 
            AH | 
             | 
            ALTR | 
            Altair Engineering Inc. | 
            5,050 | 
            0.01 | 
            -0.13 | 
            -0.16 | 
            Altair Engineering Non-GAAP EPS of $0.14 beats by $0.10, revenue of $134M beats by $6.62M  [11/2/2023 4:25 PM] | 
            65.70 | 
            6.59  (11.15%) | 
            60.00 | 
            0.89  (1.51%) | 
            43.68 - 78.49 | 
            453,285 | 
            340,000 | 
            15,397 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 03-08-2023 | 
            AH | 
             | 
            ALTR | 
            Altair Engineering Inc. | 
            6,010 | 
            -0.15 | 
            -0.07 | 
            -0.14 | 
            Altair Engineering Non-GAAP EPS of $0.15 beats by $0.01, revenue of $141.2M beats by $2.18M  [8/3/2023 4:32 PM] | 
            63.73 | 
            -6.84  (-9.69%) | 
            70.57 | 
            0.0  (0.00%) | 
            43.17 - 78.49 | 
            782,751 | 
            190,000 | 
            7,109 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 04-05-2023 | 
            AH | 
            4:05 PM ET  (May 4) | 
            ALTR | 
            Altair Engineering Inc. | 
            5,450 | 
            0.13 | 
            0.11 | 
            0.20 | 
            Altair Engineering Non-GAAP EPS of $0.36 beats by $0.07, revenue of $166M beats by $9.21M  [5/4/2023 4:34 PM] | 
            68.24 | 
            1.35  (2.02%) | 
            66.00 | 
            -0.89  (-1.33%) | 
            43.17 - 72.66 | 
            408,108 | 
            290,000 | 
            22,721 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 23-02-2023 | 
            AH | 
            4:05 PM ET  (Feb 23) | 
            ALTR | 
            Altair Engineering Inc. | 
            4,450 | 
            0.14 | 
            0.00 | 
            0.05 | 
            Altair Engineering Non-GAAP EPS of $0.31 beats by $0.12, revenue of $160.4M beats by $13.91M, FQ1 guidance below consensus  [2/23/2023 4:22 PM] | 
            63.48 | 
            6.91  (12.21%) | 
            56.90 | 
            0.33  (0.58%) | 
            43.17 - 68.85 | 
            746,117 | 
            260,000 | 
            524 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 03-11-2022 | 
            AH | 
            4:05 PM ET  (Nov 3) | 
            ALTR | 
            Altair Engineering Inc. | 
            3,880 | 
            -0.16 | 
            -0.19 | 
            -0.03 | 
            Altair Engineering Non-GAAP EPS of $0.05 beats by $0.04, revenue of $119.35M beats by $1.4M  [11/3/2022 4:50 PM] | 
            45.50 | 
            -0.03  (-0.07%) | 
            45.53 | 
            0.0  (0.00%) | 
            43.17 - 82.96 | 
            443,167 | 
            240,000 | 
            4,949 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 04-08-2022 | 
            AH | 
            4:05 PM ET  (Aug 4) | 
            ALTR | 
            Altair Engineering Inc. | 
            4,380 | 
            -0.14 | 
            -0.07 | 
            -0.04 | 
            Altair Engineering Non-GAAP EPS of $0.13 beats by $0.04, revenue of $132.66M beats by $3.29M  [8/4/2022 4:43 PM] | 
            57.99 | 
            -2.89  (-4.75%) | 
            60.88 | 
            0.0  (0.00%) | 
            48.20 - 82.96 | 
            616,604 | 
            220,000 | 
            2,688 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 05-05-2022 | 
            AH | 
            4:05 PM ET  (May 5) | 
            ALTR | 
            Altair Engineering Inc. | 
            4,430 | 
            0.20 | 
            0.15 | 
            0.23 | 
            Altair Engineering Non-GAAP EPS of $0.38 beats by $0.08, revenue of $159.8M beats by $5.64M  [5/5/2022 4:35 PM] | 
            51.65 | 
            -2.09  (-3.89%) | 
            53.74 | 
            0.0  (0.00%) | 
            50.72 - 82.96 | 
            217,214 | 
            320,000 | 
            174,535 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 24-02-2022 | 
            AH | 
            4:05 PM ET  (Feb 24) | 
            ALTR | 
            Altair Engineering Inc. | 
            4,610 | 
            0.05 | 
            -0.03 | 
            0.09 | 
            Altair Engineering GAAP EPS of -$0.02 beats by $0.12, revenue of $140.8M beats by $14.75M  [2/24/2022 4:12 PM] | 
            63.47 | 
            1.84  (2.99%) | 
            61.63 | 
            0.0  (0.00%) | 
            55.50 - 82.96 | 
            180,184 | 
            220,000 | 
            2,158 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 04-11-2021 | 
            AH | 
            4:05 PM ET  (Nov 4) | 
            ALTR | 
            Altair Engineering Inc. | 
            6,160 | 
            -0.03 | 
            -0.10 | 
            -0.06 | 
            Altair Engineering EPS beats by $0.10, beats on revenue  [11/4/2021 4:18 PM] | 
            79.84 | 
            -0.89  (-1.10%) | 
            81.95 | 
            1.22  (1.51%) | 
            45.13 - 82.00 | 
            372,298 | 
            150,000 | 
            18,666 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 05-08-2021 | 
            AH | 
            4:05 PM ET  (Aug 5) | 
            ALTR | 
            Altair Engineering Inc. | 
            5,250 | 
            -0.04 | 
            -0.11 | 
            -0.08 | 
            Altair Engineering EPS beats by $0.06, beats on revenue  [8/5/2021 4:37 PM] | 
            71.64 | 
            0.85  (1.20%) | 
            70.79 | 
            0.0  (0.00%) | 
            37.24 - 72.16 | 
            135,042 | 
            220,000 | 
            3,125 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 06-05-2021 | 
            AH | 
            4:05 PM ET  (May 6) | 
            ALTR | 
            Altair Engineering Inc. | 
            4,870 | 
            0.23 | 
            0.11 | 
            0.13 | 
            Altair Engineering EPS beats by $0.10, beats on revenue  [5/6/2021 4:34 PM] | 
            66.07 | 
            1.12  (1.72%) | 
            64.30 | 
            -0.65  (-1.00%) | 
            30.88 - 69.00 | 
            496,016 | 
            290,000 | 
            404 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 25-02-2021 | 
            AH | 
            4:05 PM ET  (Feb 25) | 
            ALTR | 
            Altair Engineering Inc. | 
            4,460 | 
            0.09 | 
            -0.10 | 
            0.05 | 
            Altair Engineering EPS beats by $0.17, beats on revenue  [2/25/2021 4:29 PM] | 
            61.68 | 
            4.00  (6.94%) | 
            58.80 | 
            1.13  (1.96%) | 
            23.04 - 68.58 | 
            531,446 | 
            237,137 | 
            7,103 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 05-11-2020 | 
            AH | 
            4:05 PM ET  (Nov 5) | 
            ALTR | 
            Altair Engineering Inc. | 
            3,270 | 
            -0.06 | 
            -0.20 | 
            -0.12 | 
            Altair Engineering EPS beats by $0.08, beats on revenue  [11/5/2020 4:46 PM] | 
            50.05 | 
            2.47  (5.19%) | 
            48.30 | 
            0.72  (1.51%) | 
            23.04 - 50.33 | 
            507,635 | 
            206,714 | 
            58,643 | 
             | 
            
            
                | 
                
                 | 
            
        
            | 06-08-2020 | 
            AH | 
            4:05 PM ET  (Aug 6) | 
            ALTR | 
            Altair Engineering Inc. | 
            2,940 | 
            -0.08 | 
            -0.06 | 
            0.03 | 
            Altair Engineering EPS in-line, beats on revenue  [8/6/2020 4:38 PM] | 
            41.01 | 
            -0.13  (-0.32%) | 
            41.14 | 
            0.0  (0.00%) | 
            23.04 - 44.34 | 
            291,804 | 
            264,035 | 
            1,645 | 
             | 
            
            
                | 
                
                 |