noun
specified stock; designated issue
Financial term for a stock or security that has been officially designated or specified, often by an exchange or regulatory body, for special treatment such as margin trading or supervision.
この銘柄は指定銘柄に選ばれたため、信用取引の規制が緩和された。
Because this stock was selected as a specified issue, the restrictions on margin trading were relaxed.
Compound of 指定 (designation) and 銘柄 (brand, issue, stock). The term is a straightforward financial compound with no obscure historical derivation.