やくじょう
株式の売買注文が成立することです。買い手と売り手の条件が一致した時に約定が成立します。成行注文はほぼ即座に約定しますが、指値注文は希望価格に達しないと約定しません。
さらに詳しく学ぶ
約定とは?株初心者にもわかりやすく徹底解説
Execution (Trade Execution)
When a stock buy or sell order is completed. Execution occurs when the buyer's and seller's conditions match. Market orders execute almost immediately, while limit orders won't execute until the desired price is reached.