📦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
Leveraged and Inverse ETFs: Why They Are NOT Holding Instruments (Volatility Decay)
The mathematical trap of leveraged (2×/3×) and inverse ETFs: daily reset and volatility decay with a specific example. Why not to hold them long-term and how to manage risk.
ETF Overlap: Why Your 'Diversified' Portfolio May Hold the Same Stocks Twice
Owning several ETFs feels diversified — but many funds share the same mega-cap stocks at the top. Your real concentration is then far higher than it looks, and a drop in a few names hits the whole portfolio at once. Here is why it happens, how to check for overlap, and how to fix it.
How to Build an ETF Portfolio: Core-Satellite and 3-Fund Portfolio
Two proven approaches to building an ETF portfolio, position sizing, hidden overlaps, rebalancing, and DCA. How to hold 3–6 funds and maintain them in just a few minutes a year.
Why Leveraged ETFs Aren't Built for Long-Term Holding
Leveraged ETFs (2× or 3×) look like a shortcut to faster gains, but they are designed to double or triple an index’s move over a SINGLE day — and they reset every day. This plain-language guide explains why that daily reset causes "volatility decay," shows it with a simple worked example, and explains why these are short-term tools, not buy-and-hold investments.
Stocks or ETFs? What to invest in (and how to combine them)
ETFs = instant diversification and calm; individual stocks = more upside and risk. When to use which, fees and taxes, and why a combo makes sense.
ETF vs Individual Stocks: Which Should You Buy First?
A clear decision framework, not a vague "it depends". We explain what an ETF is (a basket of many stocks in one purchase) versus a single stock, compare the pros and cons, walk through the core-satellite approach, and show when each makes sense for a beginner.
Tracking Error vs Tracking Difference: Is Your ETF Really Following Its Index?
Two similar-sounding numbers, two completely different meanings. Tracking difference is how far an ETF’s return drifted from its index (the gap). Tracking error measures how stable that gap is. We explain both without jargon, what causes them and how to check before you buy.
How to Choose a Good ETF: TER, Fund Size, Liquidity, and Tracking Error
A seven-point checklist to distinguish a quality ETF from an average one — fee, size, liquidity, replication, Acc/Dist, domicile.
How to Choose the Best ETF: 7 Metrics That Matter More Than Past Returns
Most beginners pick an ETF by a single number — its past return. Yet that is the least reliable thing to look at. This practical 7-metric framework shows what really decides an ETF’s quality: cost, what the fund actually holds, size, tracking quality, concentration, overlap and liquidity.
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.
Sector and Factor ETFs: Rotation According to Market Phase (with QMA Tools)
An advanced framework for rotating sector and factor ETFs based on market phase — and how to read the phase directly on QMA (Regime, sector strength, Fear & Greed). Discipline > prediction.
What is an ETF and Why is it the Best First Investment for Beginners
An ETF is a basket of stocks for the price of one — instant diversification, low fees, simplicity. Why an index ETF beats expensive 'experts' and is the ideal start.
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.