📦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
杠杆与反向 ETF：为何它们不适合长期持有（波动率损耗）
杠杆（2×/3×）与反向 ETF 的数学陷阱：每日重置与波动率损耗的具体示例。为何不应长期持有它们，以及如何管理风险。
ETF重叠：为什么你的"多元化"投资组合可能持有重复的股票
持有多只ETF感觉很分散——但许多基金在前几大持仓中持有相同的大盘股。你的实际集中度远高于表面所见，少数几只股票的下跌会同时冲击整个投资组合。以下是这种现象的成因、检查方法及应对思路。
如何构建ETF投资组合：核心-卫星策略与三基金组合
构建ETF投资组合的两种经过验证的方法，包括仓位规划、隐性重叠、再平衡与定投。如何持有3至6只基金，并在每年几分钟内完成维护。
为何杠杆ETF不适合长期持有
杠杆ETF（2×或3×）看似通往更快收益的捷径，但它们的设计初衷是在**单一交易日**内将指数涨跌幅放大两倍或三倍——并且每天重置。本文以通俗易懂的语言解释为何这种每日重置机制会造成"波动率损耗"，通过一个简单的计算示例加以说明，并阐释为何这些产品是短期工具，而非买入持有型投资品。
股票还是ETF？如何选择投资标的（以及如何组合搭配）
ETF = 即时分散投资、稳健持有；个股 = 更高潜在收益与风险。何时选择哪种方式、费用与税务须知，以及为何组合搭配更合理。
ETF vs 个股：你应该先买哪个？
一个清晰的决策框架，而非模糊的"视情况而定"。我们解释什么是 ETF（一次购买即可持有多只股票的篮子）以及单只股票的概念，对比两者的优缺点，介绍核心-卫星策略，并说明对于初学者而言各自适合的场景。
跟踪误差与跟踪偏差：你的ETF真的在跟随其指数吗？
两个听起来相似的数字，两种截然不同的含义。跟踪偏差是ETF收益与其指数之间的偏离幅度（差距大小）；跟踪误差衡量的是这一差距的稳定性。我们用浅显易懂的语言解释两者的含义、成因，以及如何在投资前进行核查。
如何选择优质ETF：TER、基金规模、流动性与跟踪误差
七点核查清单，帮助你区分优质ETF与普通ETF——费用、规模、流动性、复制方式、Acc/Dist及注册地。
如何选择最佳 ETF：7个比过往回报更重要的指标
大多数初学者凭一个数字挑选 ETF——过往回报。然而，这恰恰是最不可靠的参考依据。本文提供一套实用的7指标框架，揭示真正决定 ETF 质量的因素：成本、基金实际持仓、规模、跟踪质量、集中度、重叠程度与流动性。
Accumulating vs Distributing ETFs: Which Is Better for a Czech Investor?
Accumulating ETFs automatically reinvest dividends inside the fund; distributing ETFs physically pay them to your account. This plain-language guide explains the mechanism, the Czech tax implications, the role of fund domicile (Ireland vs Luxembourg), the TER fee, and why a European investor needs UCITS — so you can decide with information, not guesswork.
板块与因子ETF：依据市场阶段进行轮动（结合QMA工具）
一套基于市场阶段轮动板块与因子ETF的进阶框架——以及如何在QMA上直接读取市场阶段（Regime、板块强度、Fear & Greed）。纪律胜于预测。
什么是ETF，为什么它是初学者最佳的第一笔投资
ETF是一篮子股票，只需一份价格即可获得——即时分散投资、低费用、简单易懂。为什么指数ETF胜过昂贵的"专家"，以及为什么它是理想的投资起点。
Frequently asked questions
What is an ETF's TER?
TER (Total Expense Ratio) is the fund's total annual fee as a percentage. On quality index ETFs it is very low. A lower TER means more of the return stays in your portfolio.
Are leveraged ETFs suitable for long-term holding?
No. Leveraged and inverse ETFs are designed for short horizons; due to daily rebalancing and compounding of volatility they drift from expectations over long holds. They carry high risk.
What is QMA's ETF look-through score?
The look-through score sees inside an ETF and computes the QMA rating of its actual holdings. It reveals the quality of the companies inside the fund, not just its cost. It is an analytical view, not a recommendation.
QMA provides analytical and educational tools, not investment advice. Past performance does not guarantee future results.