downtick
noun [ C ]
uk/ˈdaʊntɪk/ usa small reduction in the number or level of something:
Last week's accident caused barely a downtick in travel-agency airline bookings.
STOCK MARKET, FINANCE (also minus tick)
a price or offer on a stock that is lower than the previous price at which the stock was sold:
CNBC correspondents somberly reported each downtick in stock prices.
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uptick