Terraform Labs has accused market maker Citadel Securities of playing a significant role in the depletion of its stablecoin TerraUSD (UST) in 2022. Terraform Labs claims that Citadel Securities borrowed 100,000 Bitcoin (BTC) from Gemini and used it to sell UST, which caused the stablecoin to lose its peg to the US dollar. The company also alleges that Citadel Securities used its market power to manipulate the price of LUNA, the native Terra blockchain token, further exacerbating the collapse. Citadel Securities has denied these allegations, calling them “baseless and defamatory.” The company says it has never traded UST.