A detailed look at the performance of two popular high-yield monthly income ETFs.The JPMorgan Equity Premium Income ETF (JEPI 0.12%) and JPMorgan Nasdaq Equity Premium Income ETF (JEPQ -0.02%) have garnered significant investor attention, in part due to their trailing-12-month dividend yields of 8.2% and 11.2%, respectively. Moreover, they offer monthly income, making them a favorite among passive income investors.As such, it would be interesting to share some modeling of their performance to see if they do ...