Yelza FAQ

What is the uptick rule?

Written by Yelza blogger | Mar 16, 2026 11:48:24 AM

The uptick rule is a trading regulation that restricts short selling to moments when the last trade price of a stock has increased. It was designed to prevent excessive downward pressure on a stock caused by aggressive short selling during declining markets. 

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The uptick rule allows short selling only when a stock’s most recent price movement is upward.

 

The purpose of the uptick rule is to stabilize markets and reduce the risk of short sellers accelerating a stock’s decline. Under this rule, traders are only allowed to open a short position if the most recent trade occurred at a higher price than the previous trade. This prevents traders from repeatedly short selling a stock while the price is rapidly falling. Although the original uptick rule in the United States was removed in 2007, a modified version called the alternative uptick rule was later introduced. This version restricts short selling only when a stock has fallen by a certain percentage during the trading day.

 

 

 

 

 

Short example:

 

Suppose a stock is trading at $50 and begins to fall to $49.50.

 

A trader who wants to short sell the stock must wait until the price ticks upward, for example from $49.50 to $49.55.

 

Only after this upward movement would the trader be allowed to enter a short position under the uptick rule.

 


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