Renaissance Technologies, an elite hedge fund, strategically acquired 1 million GameStop shares last quarter, reaping significant gains as the stock surged over 400% this week. Initially worth $13 million, the stake briefly soared to $65 million at Tuesday’s high, driven by renewed interest from retail investors like Keith “Roaring Kitty” Gill. RenTech, known for its algorithmic trading, also made notable portfolio adjustments, increasing its AMC holdings and reducing stakes in Nvidia and Tesla, showcasing its dynamic investment strategy amidst market volatility.