In his latest social-media post, influential trader Keith Gill, also known as Roaring Kitty, on Thursday posted an image of a dog, marking the latest in a series of cryptic posts on X.

The post, which has racked up 2.5 million views, was Gill’s first on X since June 17, when he posted an image from the Walt Disney Co. DIS animated movie “Encanto.”

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Gill’s return to social media last month sent shares of original meme stock GameStop Corp. GME soaring. The stock surged again after a June 2 Reddit post from an account associated with Gill appeared to show him holding a big stake in the videogame retailer.

Related: GameStop’s trading volume slips to lowest level since early May

As with his other posts on the platform, Gill’s latest post on X is prompting plenty of chatter about its meaning. This has included speculation that the post could be a reference to Chewy Inc. CHWY, an online retailer of pet products.

“He’s back!” Stocktwits, a social platform for investors and traders, posted on X.

GameStop Chief Executive Ryan Cohen is the former CEO and co-founder of Chewy. Shares of the pet-products company briefly surged Thursday, before ending the session down 0.3%. The stock’s trading volume was 63.79 million, well above its 65-day average volume of 11.27 million.

Related: Why Roaring Kitty is a GameStop ‘true believer’

GameStop’s stock also rose, ending the session up 3.7%. Trading volume was 34.64 million, below its 65-day average of 47.78 million. Fellow meme-stock darling AMC Entertainment Holdings Inc. AMC ended the session up 2.1%, outpacing the S&P 500 index’s SPX gain of 0.1%.

Shares of Petco Health & Wellness Co. WOOF also climbed Thursday before ending the session up 0.3%. The stock was up 5.4% in extended trading.

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