These growth funds such as VUG follow benchmark index established by research institutions such as CRSP (University of Chicago Center for Research in Security Prices), https://www.crsp.org/indexes/crsp-us-large-cap-growth-index/ and London Stock Exchange FTSE Russell 1000 Growth Index, https://research.ftserussell.com/Analytics/Factsheets/Home/DownloadSingleIssue?issueName=US1001USD&IsManual=true
QQQ/QQQM only track the top 100 on NASDAQ.
Many "large cap growth mutal funds" in retirement accounts follow these benchmark index. Some people think they offer better long term growth-risk posture than QQQ/QQQM.
