Business / Taxes / Downtick: When a security sells at a lower price than its previous sale price, the drop in value is called a downtick. For example, if a stock that had been trading at 25 sells at 24.95 the next time it trades, the 5 cent drop is a downtick.
Business / Taxes / Tick: A tick is the minimum movement by which the price of a security, option, or index changes. With stocks, a tick may be little as one cent. With US Treasury securities, the smallest increment is 1/32 of MORE
Business / Finance / Downturn: Move down in a particular stock. On U.S. stock exchanges, you cannot sell a stock short on a downtick. MORE
Business / Finance / Closing Transaction: The net of the number of stocks whose closing prices are higher than their previous trades (uptick) against the number of stocks whose closing prices were lower than their previous trades (downtick). MORE