down·tick
noun/ˈdaʊntɪk/
/ˈdaʊntɪk/
[countable, usually singular] (North American English, economics)- a small decrease in the level or value of something, especially in the price of shares
（尤指股价的）微跌，微落 - The shares were bought on a downtick.
这些股票是在小幅下跌时买进的。 - a downtick in productivity
生产力下降
- The shares were bought on a downtick.