Research Article
Analyzing the Investment Behavior in the Iranian Stock Exchange during the COVID-19 Pandemic Using Hybrid DEA and Data Mining Techniques
Table 2
Number of people who buy or sell shares from various industries.
| | Industry | No. of companies | Data of buying | Data of selling | | | First cluster | Second cluster | Third cluster | First cluster | Second cluster | Third cluster | Fourth cluster |
| | 1 | Telecommunication | 8 | 0 | 2 | 1520 | 3 | 20 | 0 | 1271 | | 2 | Insurance | 6 | 0 | 1 | 800 | 0 | 6 | 0 | 599 | | 3 | Machinery | 9 | 0 | 5 | 1295 | 4 | 26 | 1 | 1119 | | 4 | Manufacturing of metallic products | 11 | 0 | 0 | 431 | 0 | 13 | 1 | 376 | | 5 | Basic metals | 10 | 0 | 3 | 2651 | 0 | 56 | 1 | 2274 | | 6 | Candy and sugar | 6 | 0 | 0 | 237 | 0 | 0 | 0 | 174 | | 7 | Drilling | 7 | 0 | 0 | 363 | 0 | 12 | 0 | 337 | | 8 | Transportation | 9 | 0 | 1 | 285 | 0 | 5 | 0 | 267 | | 9 | Other nonmetallic products | 8 | 0 | 0 | 415 | 0 | 2 | 0 | 386 | | 10 | Car | 12 | 0 | 10 | 2524 | 4 | 41 | 0 | 2287 | | 11 | Tile | 9 | 0 | 0 | 71 | 0 | 1 | 0 | 82 | | 12 | Technical and engineering services | 10 | 0 | 20 | 2141 | 16 | 80 | 3 | 1647 | | 13 | Computer | 12 | 0 | 1 | 443 | 1 | 11 | 0 | 347 | | 14 | Mass, real estate | 13 | 0 | 1 | 633 | 1 | 5 | 0 | 437 | | 15 | Cement, lime | 8 | 0 | 1 | 830 | 2 | 7 | 0 | 731 | | 16 | Chemical products | 9 | 0 | 19 | 5548 | 13 | 91 | 1 | 3657 | | 17 | Medical products | 11 | 1 | 0 | 1540 | 1 | 12 | 0 | 1264 | | 18 | Bank | 7 | 1 | 3 | 5184 | 0 | 53 | 1 | 3281 | | 19 | Food products except sugar and candy | 12 | 0 | 3 | 1030 | 0 | 6 | 0 | 912 | | 20 | Extraction of minerals | 6 | 0 | 2 | 1141 | 0 | 19 | 0 | 847 | | 21 | Multi-industrial companies | 13 | 1 | 5 | 1491 | 4 | 20 | 2 | 1333 | | 22 | Mediators | 8 | 0 | 1 | 774 | 0 | 8 | 0 | 726 | | 23 | Investment | 10 | 0 | 0 | 160 | 0 | 1 | 0 | 149 |
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