Reuters
- A top hedge fund built a GameStop stake from scratch last quarter ahead of the meme stock's surge.
- Renaissance Technologies' 1 million shares were briefly worth $65 million at Tuesday's high.
- RenTech, founded by the late Jim Simons, also boosted its AMC bet and pared Tesla and Nvidia.
A world-beating hedge fund revealed it built a GameStop stake from scratch last quarter, making it a potential winner from the meme stock's explosive leap this week.