# Portfolio overlap — CSACX vs GDXY Comparing **Mast Managed Futures Strategy Fund** (2026-01-31) and **YieldMax Gold Miners Option Income Strategy ETF** (2026-01-31). - Shared positions: 3 - Mast Managed Futures Strategy Fund covered by YieldMax Gold Miners Option Income Strategy ETF: 0.2101767282254582832544515674 - YieldMax Gold Miners Option Income Strategy ETF covered by Mast Managed Futures Strategy Fund: 0.2101767282254582832544515674 ## Mast Managed Futures Strategy Fund — top positions | Security | Weight | Shared | |----------|--------|--------| | UMB Money Market Special II | 0.486614 | | | Zywave_Pfd Equity | 0.084090 | | | WI TREASURY SEC. 0.000000% 02/19/2026 | 0.076266 | ✓ | | WIB 0 03/19/26 | 0.076049 | | | U.S. Treasury Bills | 0.075841 | | | UST BILLS 0% 05/14/2026 | 0.067229 | | | U.S. Treasury Bills | 0.067049 | ✓ | | U.S. Treasury Bills | 0.066861 | ✓ | ## YieldMax Gold Miners Option Income Strategy ETF — top positions | Security | Weight | Shared | |----------|--------|--------| | U.S. Treasury Bills | 0.188840 | ✓ | | U.S. Treasury Bills | 0.175893 | | | U.S. Treasury Bills | 0.139767 | ✓ | | United States Treasury Bill | 0.130436 | | | U.S. Treasury Bills | 0.126460 | | | WI TREASURY SEC. 0.000000% 02/19/2026 | 0.120370 | ✓ | | US ULTRA BOND CBT Sep25 | 0.100356 | | | FRST AM-GV OB-X | 0.017878 | | ## Sources - N-PORT (fund A) — accession `0001193125-26-118913` (as of 2026-01-31) - N-PORT (fund B) — accession `0000894189-26-011032` (as of 2026-01-31) --- _Informational only — not investment advice. FundWatcher presents publicly available data and makes no recommendation to buy or sell any security. Verify all figures against the source filing before relying on them._ _Data sourced from U.S. SEC EDGAR filings (Forms N-PORT, N-CEN, and prospectus Risk/Return summaries). FundWatcher is not affiliated with the SEC._ _Use of this data is subject to the FundWatcher Terms of Service. Information may be used only for personal, non-commercial research and may not be redistributed. See _