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Atmastco (ATMASTCO)₹109.00−2.24%Civil Construction
At the end of the Jun 2026 quarter, Atmastco's shareholders were: promoters 66.10%, FIIs 0.24%, DIIs 0.02%, public 33.64%. Promoter holding is unchanged on the quarter. FII holding is up 0.23 percentage points from 0.01% a year earlier. It had 3,797 shareholders.
As of · Company filings (shareholding pattern)
| Mar 2024 | Sep 2024 | Mar 2025 | Sep 2025 | Mar 2026 | Jun 2026 | |
|---|---|---|---|---|---|---|
| Promoters | 68.39% | 68.39% | 66.11% | 66.11% | 66.10% | 66.10% |
| FIIs | 0.03% | 0.01% | 0.00% | 0.00% | 0.00% | 0.24% |
| DIIs | 0.00% | 0.01% | 0.43% | 0.07% | 0.01% | 0.02% |
| Public | 31.58% | 31.59% | 33.46% | 33.82% | 33.89% | 33.64% |
| Number of shareholders | 2,135 | 3,460 | 4,066 | 4,063 | 3,891 | 3,797 |
| Holder | Category | Jun 2026 | Change (pp) |
|---|---|---|---|
| Subramaniam Swaminathan Iyer | Promoter | 29.52% | 0.00 |
| Apex Steel And Technology India Private Limited | Promoter | 18.03% | 0.00 |
| G Venkataraman | Promoter | 14.43% | 0.00 |
| Jayasudha Iyer | Promoter | 1.56% | 0.00 |
| Ajay Kumar Aggarwal | Public | 1.50% | −0.13 |
| Vishwam Constructions Private Limited | Promoter | 1.50% | 0.00 |
| Banumathi Ganesan . | Promoter | 0.55% | 0.00 |
| Sowrirajan S | Promoter | 0.50% | 0.00 |
| Seethalakshmi R | Promoter | 0.00% | 0.00 |
Promoters held 66.10% of Atmastco at the end of the Jun 2026 quarter, down 2.29 percentage points from 68.39% a year earlier.
In the Jun 2026 quarter, foreign institutional investors (FIIs) held 0.24% (up 0.24 percentage points from 0.00% a quarter earlier) and domestic institutions (DIIs) held 0.02% (up 0.01 percentage points from 0.01% a quarter earlier).
Atmastco had 3,797 shareholders at the end of the Jun 2026 quarter, against 3,460 a year earlier.
Ajay Kumar Aggarwal (Public) held 1.50% at the end of the Jun 2026 quarter, the largest named holding outside the promoter group.