香港交易所第一季度净利润40.8亿港元，预估39.9亿港元。收入及其他收益68.6亿港元，预估67.7亿港元。息税折旧及摊销前利润52.5亿港元，预估52亿港元。

Group 1 - The core point of the article is that Hong Kong Exchanges and Clearing Limited reported a net profit of HKD 4.08 billion for the first quarter, exceeding the forecast of HKD 3.99 billion [1] - The company's total revenue and other income reached HKD 6.86 billion, surpassing the expected HKD 6.77 billion [1] - Earnings before interest, taxes, depreciation, and amortization (EBITDA) amounted to HKD 5.25 billion, slightly above the forecast of HKD 5 billion [1]