Plus Tick

A price designation referring to the trading of a security at a price higher than the previous sale price for the same security.

Also known as an "uptick".

Investopedia Says:
There are several rules regarding the tick status of a security which affect the type of trade orders that are permissible for that security at a specific moment in time. For example, short sale orders can only be executed on a plus tick or a zero plus tick (a transaction at the same price as the preceding trade, but at a higher price than the last different trade).

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Expression used when a security has been traded at a higher price than the previous transaction in that security. A stock price listed as 28+ on the Consolidated Tape has had a plus tick from 27.94 or below on previous trades. Also called uptick. See also Minus Tick; Tick; Short-Sale Rule; Zero-Minus Tick .