Lendlease Group's stock price plummeted 5.13% during intraday trading on Monday, reflecting significant investor reaction to the company's latest financial results.

The sharp decline followed the company's announcement that it swung to a loss in the fiscal first half, reporting a loss of AU$0.461 per stapled security compared to a profit of AU$0.07 in the same period last year. Revenue also fell substantially to AU$2.84 billion from AU$4.53 billion a year earlier, indicating weaker business performance.

Despite maintaining its earnings guidance for investments, development, and construction and declaring a slightly higher interim dividend, the significant deterioration in profitability and revenue appears to have driven the negative market sentiment toward the stock.