泡泡玛特：斥资1.99亿港元回购134万股

“于” is a formal written alternative to “在”, used to introduce a time or place. In news and business writing, it often appears before a date to mean “on” or “at”.

“斥资” is a formal expression meaning “to spend funds”, especially a large amount of money, in business or financial contexts. It is usually followed by an amount and then the action the money is used for.

A verb can be followed directly by a quantity expression to show how much of something is involved in the action. Here, “回购134万股” means “buy back 1.34 million shares”.

“为” is a formal written equivalent of “是”. In reports and announcements, it is often used to state a value, result, or specification.

“每” introduces a per-unit price or rate, and “至” is a formal way to express a range, meaning “to”. Together, this pattern is common in financial writing to show a price range per unit.