WisdomTree US Efficient Core UCITS ETF - USD Acc is an exchange-traded fund that tracks the WisdomTree US Efficient Core UCITS Index. It provides 90% exposure to a diversified basket of large-capitalization US equity securities, primarily the 500 largest companies by market capitalization that meet WisdomTree's ESG criteria, combined with 60% notional exposure to US Treasury bond futures contracts using a 10% cash collateral component. This structure aims to enhance capital efficiency by overlaying fixed-income diversification on equity holdings, potentially improving risk-adjusted returns akin to a leveraged 60/40 portfolio while maintaining volatility similar to 100% US equities. The ETF is physically replicated for equities, accumulating dividends, UCITS compliant, and domiciled in Ireland with a total expense ratio of 0.20%. It focuses on US-centric investments across sectors like technology, industrials, and financials, with over 99% in large-cap stocks exceeding $10 billion in market value. Launched in October 2023, it serves as a core equity solution for investors seeking boosted exposure and portfolio optimization without separate stock and bond allocations.