GameStop shares are missing the latest bout of meme-stock trading. They were little changed in early Friday trading, and have posted only modest gains over the past two weeks, even though renewed meme-stock mania has triggered a series of enormous surges and declines on Wall Street.

The market saw a fresh meme stock frenzy this week. While high exuberance can be a contrarian sell signal, sources say the market is still in good shape.