zero-plus tick investment & finance definition
Securities and Exchange Commission rule that says that a short sale (a sale of
stock that the trader doesn’t own) can occur only if the last transaction price
was unchanged from the transaction price directly before it, but higher than
the last different sale price.
See zero-plus tick in Wall Street Words
The sale of a security when the price is the same as the security's preceding sale price but is above the last different sale price. A short sale of a security is permitted on a zero-plus tick.