Rule 10a-1

An SEC rule that formerly prohibited a short sale except on a plus tick or a zero plus tick. That is, Rule 10a-1 disallowed short sales at a price below the price at which the security traded most recently. This rule was intended to prevent short sellers from artificially deflating a security's price so that it harmed other investors. It was also called the uptick rule. It was replaced by Regulation SHO in 2007. Some have argued for its reintroduction.

Rule 10a-1

A 1939 SEC rule that prohibits the short sale of a security at or below the last price at which that security was traded, unless the last price was higher than the previous different price. Rule 10a-1 was instituted to keep short sellers from battering down the price of a stock.

单词	rule 10a-1
释义	Rule 10a-1 Rule 10a-1 An SEC rule that formerly prohibited a short sale except on a plus tick or a zero plus tick. That is, Rule 10a-1 disallowed short sales at a price below the price at which the security traded most recently. This rule was intended to prevent short sellers from artificially deflating a security's price so that it harmed other investors. It was also called the uptick rule. It was replaced by Regulation SHO in 2007. Some have argued for its reintroduction. Rule 10a-1 A 1939 SEC rule that prohibits the short sale of a security at or below the last price at which that security was traded, unless the last price was higher than the previous different price. Rule 10a-1 was instituted to keep short sellers from battering down the price of a stock.
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