First: Yes, Medallion fund is the primary fund of RenTech.
Second: To me, stat-arb can be HFT or non-HFT. They were/are doing HFT stat-arb in Medallion fund. AQR, Virtu, and Citadel are probably doing both HFT and non-HFT stat-arb. Twenty years ago stat-arb was called "pairs trading". Today, it is much more complex: basket vs basket.
First: Yes, Medallion fund is the primary fund of RenTech.
Second: To me, stat-arb can be HFT or non-HFT. They were/are doing HFT stat-arb in Medallion fund. AQR, Virtu, and Citadel are probably doing both HFT and non-HFT stat-arb. Twenty years ago stat-arb was called "pairs trading". Today, it is much more complex: basket vs basket.