Key Takeaways Last week, Gill shook up trading of Chewy stock, along with that of rival Petco Health and Wellness (WOOF), when he posted a picture of a cartoon dog on his X account. That sent shares of Chewy soaring as much as 34% Thursday before they turned negative. They added to their losses on Friday. Gill, one of the drivers of the meme stock craze of early 2021, disappeared from social media for three years before re-emerging in May. That prompted another meme stock frenzy, especially impacting shares ...