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Finance Dictionary and Glossary of Investment Terms
short sale rule
SEC rule requiring short sales to be made only on an uptick or zero-plus tick. The purpose of the rule is to prevent traders from being able to force prices downward by borrowing stock and then selling it. also called plus tick rule.
A Nasdaq rule that prohibits NASD members from selling a Nasdaq National Market stock at or below the inside best bid when that price is lower than the previous inside best bid in that stock. (See best bid, inside spread, short sale)
A SEC rule requiring short sales to be made only on a plus tick or zero plus tick.