Most liquid futures
Euro is the most liquid of the currency futures options and FXE is one of the most liquid currency ETFs. However, the currency futures options are deeper in size and liquidity than the currency Just as was the case last year, the SPDR S&P 500 ETF (SPY) has the most liquid options market of any ETF or even stock. The world's largest exchange-traded fund, with $237 billion in assets under The Best Futures Trading Hours in the Morning Session: 9:30 AM – the markets open for US session trading; 11:30 AM – European equity markets closed for trading; 9:30 – 11:30 AM is the most liquid session and is called the US and EUR “overlap” European traders need to close their positions at the close, forcing an increase in volume