Duquesne Family Office LLC is an institutional investment manager that files quarterly 13F reports with the SEC. As of Q4 2025, the fund manages $4M in reported equity holdings across 60 positions. The largest holdings are NTRA (12.8%), XLYD.BA (6.7%), INSM (5.7%), ETHB (5.5%), QQQM.MX (5.0%). The portfolio is concentrated in Other (90.9%), Technology (3.7%), Communication Services (2.7%). Data sourced from SEC EDGAR 13F filings (CIK 1536411).