QQQM tracks the same Nasdaq-100 index as QQQ, which holds the 100 largest non-financial companies on the Nasdaq, so its holdings and risks are nearly identical: heavy weights in mega-cap technology and sensitivity to interest rates and growth stock valuations. The main differences are a lower expense ratio, a lower share price and a smaller trading volume and options market than QQQ. Active traders and options users generally use QQQ, while QQQM is more often used for buy-and-hold investing.
