What are the risks of USD Coin?

Could you elaborate on the potential risks associated with USD Coin? I'm particularly interested in understanding the market volatility, regulatory uncertainty, and any potential technological vulnerabilities that might pose challenges for investors? Also, how does the pegging mechanism work and what are the chances of it breaking, leading to a loss of value? Additionally, could you discuss the impact of counterparty risk and the safety measures taken to mitigate it? Finally, how does USD Coin compare to other stablecoins in terms of risk profile?