expression, godan verb (-u)
buy stock; purchase shares
Standard expression for purchasing shares of stock. Used in financial contexts.
彼は初めて株を買った。
He bought stock for the first time.
どの会社の株を買うか迷っている。
I'm unsure which company's stock to buy.
Compound of 株 (stock, share) + を (object marker) + 買う (to buy). A straightforward verb phrase.