What happened Shares of tech stock Pinterest (NYSE: PINS) plunged as much as 10% on Wednesday as growth stocks fell almost across the board. And the market seems to have turned its attention to rising interest rates and the potential for higher inflation in coming years, which hurts growth stocks. Now what There's no reason to change your investment thesis in a company like Pinterest after today, and it may be a buying opportunity for long-term investors who have been looking for a cheaper share price to get in.