In a short sale, the investor borrows against margin to buy shares and then sells them, hoping prices decrease to then buy them back at a lower price.
Rules and Strategies for Profitable Short Selling
Ordens de Negociação - Informe Dinheiro
Margin Loans, Margin Trading Account
Short (finance) - Wikipedia
How To Calculate Margin Requirements For Short Selling - FasterCapital
Margin account: Margin Account Essentials for Successful
Margin and Margin Trading Explained Plus Advantages and Disadvantages
Margin Account: What it is, How it Works, Example
Short Selling Basics