恒生科技指数日内跌幅扩大至1%

This pattern means that a change develops until it reaches a specific level, number, or degree. In news and financial Chinese, it is often used to describe how much something has risen, fallen, or expanded to a new point.

集体 means 'as a group' or 'collectively'. It is often placed before a verb to show that multiple people or things perform the same action together. In finance news, it commonly describes several indexes or stocks moving in the same direction.

领 in financial reporting often appears in forms like 领跌 or 领涨, meaning 'to lead the decline' or 'to lead the rise'. It shows that a sector, stock, or category is the most notable mover in that direction.

This is a very common structure in financial Chinese. 跌 or 涨 is followed by a number and percent sign to show the amount of decrease or increase. It can also combine with 超 to mean 'more than'.

获悉 is a formal written expression often used in journalism to mean 'learned' or 'was informed that'. It introduces reported information and is much more common in news style than in everyday conversation.