A USD stablecoin is a cryptocurrency that attempts to offer price stability with a pegged exchange rate (called a peg) to the US Dollar and is reported to be fully backed by USD dollars. Other stablecoins may use an algorithmic mechanism to try to maintain their peg to USD. Stablecoins attempt to offer the best of both worlds - instant processing-as easy as sending an email and remove volatility when investments are priced in dollars.
Please note that there is no guarantee the stablecoins will hold their peg to USD and therefore in an extreme event there may be currency and counterparty risks associated with each stablecoin. We diversify across a range of stablecoins in order to manage some of these risks, but investors should be aware of the currency and counterparty risks before depositing.