RE: short? not happeningI
Restrictions
Shorting is subject to many restrictions on the size, price, and types of stocks you are able to short. For example, you can't short sell penny stocks and most short sales need to be done in round lots.
In addition, the SEC, NYSE, and NASD have rules preventing short selling unless the last trade of the stock is at the same or higher price (known as an uptick or zero plus tick). These rules exist so that investors can't sell short in a declining market. Continuous short selling on a falling stock will keep forcing it down, damaging the market further.