The bad economic news has 'stirred' anxiety among investors. [=has caused investors to worry]
“Not a creature was 'stirring'” <aq>Clement Moore, “A Visit from Saint Nicholas” (1822)</aq>
His comments certainly 'stirred things up'. [=caused a lot of excitement, anger, etc.]
(..) have their own business... and they just stop off and have about six or seven. And their fingers pickle 'cause that's what they stir their drink up with. And they do a lot of this when they talk: With their drink, so their drink spurts on your shoe, you know. You know, and you're looking (..)1983 Bill Cosby: Himself