📦ETFs — exchange-traded funds
How to trade ETFs from basics to expert — fund selection (TER, liquidity), portfolio construction and sector or factor funds.
ETFs — exchange-traded funds — overview
An ETF (exchange-traded fund) is a basket of many stocks or other assets that trades like a single stock. One purchase gives you a stake in dozens or hundreds of companies — instant diversification at low cost. That is what makes ETFs the most popular tool for both long-term and beginner investors: instead of picking individual stocks, you buy a whole index (for example the S&P 500) or an entire sector in one click. When choosing an ETF you watch mainly the expense ratio (TER — the total annual fee, very low on good index ETFs), liquidity (how easily the fund trades), fund size and exactly what it tracks. There are index ETFs (copy an index), sector ETFs (one sector), factor ETFs (selection by traits like value or momentum), dividend and leveraged ETFs. Leveraged and inverse ETFs are a short-horizon, high-risk tool, not for long-term holding. QMA adds a unique angle: a "look-through" score that sees inside an ETF and computes the QMA rating of its actual holdings. You learn not only the fund's cost but also the quality of the companies inside. This section runs from fund-selection basics through portfolio construction to more advanced factor and sector ETFs. This is educational content, not investment advice.
ETFs — exchange-traded funds articles
ETFs Alavancados e Inversos: Por Que NÃO São Instrumentos de Manutenção (Decaimento por Volatilidade)
A armadilha matemática dos ETFs alavancados (2×/3×) e inversos: reinicialização diária e decaimento por volatilidade com um exemplo específico. Por que não mantê-los no longo prazo e como gerir o risco.
Como Escolher o Melhor ETF: 7 Métricas Que Importam Mais do Que os Retornos Passados
A maioria dos iniciantes escolhe um ETF por um único número — seu retorno passado. No entanto, esse é o dado menos confiável a se observar. Este framework prático com 7 métricas mostra o que realmente determina a qualidade de um ETF: custo, o que o fundo efetivamente detém, tamanho, qualidade de rastreamento, concentração, sobreposição e liquidez.