Can I create a custom portfolio with a single ETF? September 06, 2021 09:43 Updated Yes! The choice is yours. Your Syfe Select Custom portfolio can hold 1 - 8 ETFs. Related articles Can I edit my Syfe Select Custom portfolio after creating it? Will my Custom portfolio be rebalanced? What are the fees for Syfe Select Custom portfolios? How many ETFs can I add in my portfolio? What is Syfe Select Custom?