The turbulent rally comes days after the investor, known for triggering the meme-stock rally of 2021, posted an uncaptioned picture of a puppy on the social media platform X that briefly sent Chewy shares to a near one-year high on Thursday. Meme stocks – boosted by memes on social media – first emerged as a force three years ago, when amateur traders mobilized on platforms including Reddit to boost shares in GameStop. Shares of Chewy, which sells pet food as well as medicine online, have risen 15% so far i ...