Regulations Governing the Conduct of Securities Trading Margin Purchase and Short Sale Operations by Securities Firms Article 20
When a securities firm conducts securities margin purchase and short sale business, if due to price fluctuation the net value of the collateral in a customer's margin account less the customer's debit balance increases, the securities firm may not deliver to the customer the money or securities or commodities equivalent to the excess equity or apply such excess against the margins required for margin purchase or for short sales.
中文原文 證券商辦理有價證券買賣融資融券管理辦法第20條
證券商辦理有價證券買賣融資融券，因價格變動而使客戶之信用帳戶擔保品價值扣除客戶債務後之淨值增加時，不得對客戶交付相當於該增加金額之金錢或有價證券或商品，或抵充融資自備價款、融券保證金。