Bullstory Research July 27, 2026
Mastering ETFs: Core Guide from Beginners to Advanced Investors
Key takeaways
The management fees for VOO and VTI are 0.03% annually. ETFs are products that bundle various stocks together, allowing for real-time buying and selling on exchanges like stocks. Before investing, check the management fees, daily trading volume (over 100 shares), and asset size to assess liquidation risk.
The easiest way to invest in U.S. stocks is through ETFs. However, if you don't know the criteria for choosing an ETF, you might end up with products that have high fees or hold onto products that shouldn't be kept long-term. This article summarizes those criteria.
What is an ETF?
An ETF (Exchange-Traded Fund) is a product that allows you to buy and sell a basket of various stocks on the stock exchange like a single stock. Instead of needing to pick individual stocks one by one, purchasing one ETF diversifies your investment across dozens or hundreds of companies.
Unlike mutual funds (general funds available through banks or brokerage firms), ETFs can be bought and sold in real-time at much lower fees. They are effective tools for both beginners and experienced investors.
Representative ETFs that encompass the entire market
Here are the three key things to know.
| ETF | Target Index | Management Fee |
|---|---|---|
| VOO | S&P 500 (Large Cap US Stocks 500) | Annual 0.03% |
| QQQ | Nasdaq 100 (Tech Sector Focus) | Annual 0.20% |
| VTI | Total US Stock Market (Large, Mid, Small Caps) | Annual 0.03% |
Management fees are costs that are automatically deducted from my money every year. Lower is better.
Sector ETFs: Invest in specific industries
- XLK: Technology Sector
- XLV: Healthcare Sector
- XLE: Energy Sector
- XLF: Financial Sector
The strong sectors change with the economic cycle. Sector ETFs use strategies that ride those trends.
Thematic ETFs: Focused investment in trends
- ARKK: A collection of innovative technology companies
- BOTZ: Companies related to robotics and AI
- TAN: Companies related to solar energy
- HACK: Companies related to cybersecurity
Focusing on specific trends means that profits and losses can be significant. You must accept that volatility is higher than that of a typical ETF.
Leveraged and Inverse ETFs: For short-term use only
<strong>Leveraged ETFs</strong> aim for 2~3 times the daily return. Notable examples include TQQQ (3 times QQQ) and UPRO (S&P 500 3 times). Since these products are designed for short-term trading purposes, holding them for an extended period can lead to a decay effect, where the expected returns diminish over time due to compounding losses in the leveraged effect.
Inverse ETFs generate profits when the market declines. Examples include SH (inverse of S&P 500) and SQQQ (inverse of 3 times QQQ). They are structured for short-term defensive use only and are not suitable for long-term holding.
Points to check when choosing an ETF is 5.
- Management Fee: The standard is below 0.1% per year. The lower, the better.
- Trading Volume: An average of at least 100 shares per day is necessary for easy buying and selling.
- Tracking Error: The difference between the index that the ETF follows and the actual return. The smaller, the better.
- Manager: Large managers like Vanguard, BlackRock iShares, and SPDR are stable.
- Asset Size: If it is above 10 billion dollars, management is stable. Smaller ETFs risk sudden liquidation.
Frequently asked questions
What is an ETF, and what criteria should individual investors consider when starting?
An ETF is a listed product that involves buying and selling a basket of various stocks. Beginners should first check management fees, trading volume, tracking error, management company, and asset size (in billions of dollars, 10).
What is the difference between VOO, QQQ, and VTI?
VOO tracks the S&P 500 (large-cap stocks), QQQ tracks the Nasdaq 100 (focused on tech stocks), and VTI tracks the entire U.S. stock market. VOO and VTI are more favorable in terms of costs, while QQQ has high volatility due to its tech concentration.
How do sector ETFs and thematic ETFs differ?
Sector ETFs contain only specific industries (e.g., technology, healthcare). Thematic ETFs focus on specific trends like robotics and solar energy, which leads to greater volatility.
What risks are inherent in leveraged and inverse ETFs?
Leveraged ETFs are designed to target multiples of daily returns of 2~3. Over time, performance can fall short of expectations due to the effects of compounding, making them unsuitable for long-term holding.
How should I choose among several ETFs that track the same index?
Compare management fees, trading volume, tracking error, management company, and asset size. It is recommended that the management fee is below 0.1% and the assets are above 10 million dollars.