CIG's stock plummeted 5.04% intraday on Monday, reflecting negative sentiment in the trading session.

The decline may be attributed to sector-wide selling pressure after peer New EasyTech reported disappointing first-quarter earnings, which dampened investor confidence across the industry. Additionally, three directors of the company disclosed plans to reduce their shareholdings, albeit in minor amounts.

Despite positive developments such as Morgan Stanley increasing its holdings and strong growth prospects for AI optical modules, these negative factors appear to have driven the stock's downward movement.