In this episode, David will look at what can happen when an ETF attracts a lot of money very quickly and why popularity is not always the same as safety. This week’s section explores the difference between large ETFs that track deep, liquid markets and specialist ETFs that invest in narrower themes or less liquid areas. From broad S&P 500 trackers to high-growth thematic funds, ETFs can benefit from scale, but rapid inflows can also create concentration, crowded trades and pressure on the underlying holdings. The section will explain why investors should look beyond fund size and ask whether an ETF’s popularity is supported by a deep market or driven by momentum around a hot theme. This information is only suitable for persons in the UK or EU. QuotedData is a trading name of Marten & Co which is authorised and regulated by the Financial Conduct Authority. QuotedData publishes free, reliable educational resources, research and news on carefully selected sectors and companies, some of which is sponsored. UK investment companies and REITs form the core of our coverage, offering investors a professional investor quality service. In addition, we provide data, including performance charts and statistics, across the full spectrum of pan-European equities. Our team of expert analysts writes with a balanced view and our goal is to provide you with the information you need to make your own investment decisions, or to understand in more detail what your adviser is recommending to you. #quoteddata #etf #investing #strategies #europe #stocks #equity #trading