Long transactions involve buying a security with the expectation that its price will increase, while short transactions involve borrowing and selling a security with the hope of buying it back at a lower price. The feedback from the document states:

"Short transactions are a common feature of the capital markets, although not as common as long transactions – the transactions taken by investors who anticipate a price increase in the security. Investors who short sell stocks must first borrow the shares. They must also declare their short transactions."