Single-Stock and Concentrated Income ETFs Expose NAV and ROC Risks

YieldMax's MUY launched on 2026-09-23 for Micron exposure through weekly call spreads, while the latest Group 2 distribution announcement again showed extreme, variable annualized payout rates and explicit ROC and loss warnings. These products reinforce that headline payouts are not total returns and that concentrated funds retain substantial downside while capping upside.