downtick

down +‎ tick

downtick (plural downticks)

1. A small decrease or downward change in something that has been steady or rising.
   • 2010, Keith Lee Morris, Call it What You Want, page 53:

     There had been a downtick in April's enthusiasm for schoolwork — a sprinkling of Bs on her report card.

2. (finance) A stock market transaction or quote at a price below a preceding one.

• uptick

• tick down