US index futures saw mostly higher on Monday, with the Invesco QQQ Trust (NASDAQ:QQQ) and the SPDR S&P 500 (ARCA:SPY) leading the way. This positive trend was reported by financial news source Benzinga. The Invesco QQQ Trust and the SPDR S&P 500 are popular exchange-traded funds that track the performance of the Nasdaq 100 and the S&P 500, respectively. This news indicates a positive start to the trading week for investors in the US stock market.