‘Black swan’ fund slammed by new type of swan By: MarketWatch April 05, 2023 at 10:58 AM EDT A fund set up to protect investors from market volatility has plunged nearly 25% from its peak in late 2021, as a swan of a different color upends predictions. Read More >> Related Stocks: Blackswan Growth & Treasury Core Amplify ETF SPDR S&P 500 ETF Trust