Nifty Defence Index surged over 2% on June 4, hitting new highs for third straight session despite subdued market. Driven by strong buying interest amid growing geopolitical tensions and India's 'Operation Sindoor' strikes in Pakistan, Defence index gained ₹9,000 crore this week. GRSE jumped 7% on new polar research vessel MoU, while HAL dipped slightly due to engine supply concerns.