MemeMarkets: Retail investors ‘celebrate’ Ken Griffin’s birthday in their own way

Shares of AMC Entertainment AMC, +1.67%, BlackBerry BB, +0.78% and other memes closed up on the day, while others struggled as the retail crowd keyed in on their old favorites to cause as much havoc as they could for the man they still blame for January’s short squeeze.

“Ken Griffin is turning 53 on October 15th,” read one popular post on Reddit board r/AMCStock “What a great birthday present the MOASS [Mother of all short squeezes] would be.”

AMC closed up 1.7% on the day, but gained 9.6% for the week as investors basked in the glow of more blockbuster releases and a shift into direct registration of shares.

GameStop GME, -0.30% —a stock backed by investors who often say they are no fan of billionaire Griffin—finished the day down 0.3% after news broke that the State of Alaska had divested 75% of its holdings in the stock, but it did pop almost 1.3% in the final 45 minutes of trading as retail investors pushed each other to “celebrate” Griffin on that ticker as well.

Other meme stocks BlackBerry and Nvidia NVDA, +0.53% joined AMC in the green, while Bed Bath & Beyond BBBY, -2.98%, Express EXPR, -1.36% and Nokia NOK, -0.84% and fell on the day, despite a solid showing from the Dow Jones Industrial Average DJIA, +1.09%.