Question: what are the best etf funds?
Answer: Top tech ETF – Invesco QQQ Trust (QQQ) 2019 performance: +38.6 percent. ... 
Top S&P 500 ETF – Vanguard S&P 500 ETF (VOO) ... 
Top VIX ETF – ProShares VIX Short-Term Futures ETF (VIXY) ... 
Top high-dividend ETF – Vanguard High Dividend Yield (VYM) ... 
Top biotech ETF – SPDR S&P Biotech ETF (XBI)