I've actually been observing this QLD for quite a while. Although it's not the most mainstream ETF, it acts like a trend-following expert whenever there's movement in the tech sector - all the major tech companies are in its holdings. When the trend comes, the turnover skyrockets, with 293M in trading volume just yesterday! But don't forget it carries 2x leverage with intraday volatility amplification mechanisms, featuring lots of short-term speculation. The management fee is visibly higher compared to regular ETFs. Can you really withstand holding it long-term? Haha, the community has become active again recently, with heated arguments erupting during every volatile market discussion~