Regulations Governing Securities Firms Article 40
A securities firm accepting brokerage orders to trade securities shall not keep securities deposited by customers under its own custody. It shall handle the securities pursuant to the regulations of the centralized securities depository.
中文原文 證券商管理規則第40條
證券商受託買賣有價證券，對於客戶存放之有價證券不得自行保管，應依證券集中保管事業之規定辦理。