Meaning of "AT"/"FOR" in English
Used in context of general equities. Paramount terms used to differentiate an offering . Stock is offered at; stock is bid for. In an offering , the trading syntax followed is "Quantity-at-Price" in a bid, the syntax followed is "Price-for-Quantity."
Campbell R. Harvey. Hypertextual finance English glossary. Английский словарь гипертекстовых финансов. 2012