Exchange Traded Funds

In the previous lesson, we explored how diversification affects a portfolio’s risk. In this lesson, we’ll examine a type of security that comes pre-diversified: exchange-traded funds (ETFs). We’ll cover what ETFs are, how they work, their advantages and limitations, and the differences between passive and active management.

Rather than focusing on a single stock, investors can benefit from holding multiple stocks. The same applies to cryptocurrencies or any other assets. Why? The answer is diversification. By combining different assets, we can reduce portfolio risk without sacrificing expected returns.

Creating a diversified portfolio from scratch can be complex, but ETFs offer a simple solution. An ETF is essentially a fund made up of multiple securities, yet it trades as a single security on an exchange. This makes it easier for investors to achieve diversification without buying dozens of individual stocks.

An exchange-traded fund (ETF) is a collection of securities bundled into one investment product. The first ETF, SPY, launched nearly 30 years ago to track the S&P 500 Index, which represents the 500 largest U.S. companies by market capitalization.

Initially, ETFs were designed to replicate major indices like the NASDAQ-100 (QQQQ) and the Dow Jones Industrial Average (DIA). These ETFs provided investors with broad market exposure at low cost, eliminating the need to buy shares of every company individually.

How ETF Prices Work

The value of an ETF is measured by its Net Asset Value (NAV), which represents the combined value of all the underlying securities. The NAV is typically calculated at the market close. For example, a U.S.-based equity ETF calculates its NAV at 4:00 PM ET. However, ETFs that track foreign markets may have a “stale” NAV while U.S. investors continue trading.

Over time, financial institutions created sector-specific ETFs to give investors targeted exposure. For instance, the S&P 500 has 11 sectors, each represented by a select SPDR ETF:

• XLC: Communication Services
• XLY: Consumer Discretionary
• XLP: Consumer Staples
• XLE: Energy
• XLF: Financials
• XLV: Health Care
• XLI: Industrials
• XLK: Information Technology
• XLB: Materials
• XLRE: Real Estate
• XLU: Utilities

1. Built-in Diversification

ETFs give exposure to an entire sector or index, reducing the need to select individual stocks. For example, XLK allows investors to hold a fraction of every major tech company in the S&P 500 through one security. Some ETFs even specialize in cryptocurrencies, such as BITW, BLOK, BLCN, LEGR, and KOIN.

2. Professional Management

Many ETFs have managers who ensure the fund tracks its index or makes strategic adjustments. Even passively managed ETFs rely on professionals to maintain the portfolio, saving investors time and effort.

3. Trading Flexibility

Unlike mutual funds, which trade only once per day at the closing price, ETFs trade continuously like stocks. Investors can buy, sell, or short ETFs throughout the trading day, giving greater control over entry and exit points.

4. Low Fees ETFs generally have lower transaction costs compared to mutual funds, making them cost-effective. Even though the fund holds hundreds of stocks, trading is designed to minimize market impact and execution costs.

While ETFs offer many benefits, they are not without drawbacks. Key disadvantages include:

1. Trading Costs and Liquidity Issues

ETFs must be bought or sold through a broker, which can involve commissions or fees. In contrast, mutual fund investors often buy directly from the fund without additional charges. Some ETFs are thinly traded, which can lead to a wide bid-ask spread – the difference between the price you pay to buy and the price you receive when selling. Popular ETFs generally avoid this issue, but less liquid ETFs may present challenges.

2. Operating Expenses

Each ETF has an expense ratio, a fixed percentage charged regardless of fund performance. If a fund’s value remains flat – or declines – the expense ratio reduces net returns. Savvy investors seek ETFs with a strong balance of performance and reasonable fees.

3. Tracking Errors

Many ETFs aim to replicate an index, but imperfect management can lead to tracking errors, where the ETF’s returns deviate from its benchmark. This can result in missed opportunities or lower-than-expected performance.

4. Industry Concentration Risk

Sector-specific ETFs, like the select SPDRs, diversify across companies in a single industry but are still exposed to sector risk. While they mitigate the idiosyncratic risk of individual stocks, they remain vulnerable to industry-wide downturns.

5. Market Effects of ETFs

ETFs influence demand for the underlying stocks. If a stock is included in many ETFs, demand may rise. Conversely, removal from an index or a downgrade can sharply reduce demand. These dynamics can introduce volatility around index rebalancing.

ETFs can generally be divided into passively managed and actively managed funds, each with distinct features.

Passive Management

Passive ETFs aim to track an index. They offer:

• Transparency: Constituents and weights closely mirror the underlying index.
• Stability: Low portfolio turnover reduces transaction costs and capital gains.
• Lower fees: Management costs are smaller because the fund follows a predetermined index.

Who uses passive ETFs?

1. Individual investors seeking broad market exposure without managing a large portfolio.

2. Robo-advisors, algorithmic systems using AI to allocate investments efficiently. They often rely on passive ETFs for low costs and broad exposure. Robo-advisors can optimize portfolios based on sector rotation, market conditions, risk tolerance, and tax considerations.

Active Management

Active ETFs aim to outperform benchmarks or peer ETFs. Features include:

• Higher management costs: Active managers employ specialized teams and sophisticated analytics.
• Flexibility: Managers can deviate from the benchmark to exploit market opportunities.
• Variable performance: Success depends heavily on manager skill. Many active ETFs fail to beat their benchmarks; for example, only around 1% of active ETF managers outperformed the S&P 500 (Chen).

Active management can provide higher potential returns, but it comes with higher fees and greater risk of underperformance.

Choosing between sectors or individual stocks involves different strategies:

Sector Selection

• Focuses on macroeconomic trends, monetary policies, employment, housing, and global factors.
• Determines which sectors are likely to outperform, aiming for strategic rotation.
• ETFs allow investors to gain exposure to these sectors without picking individual stocks.

Stock Selection

• Involves evaluating individual companies through fundamental, technical, behavioral, sentiment, or statistical analysis.
• Carries idiosyncratic risk, as company-specific events can drastically affect stock prices.
• Potential rewards are higher, with some individual stocks or cryptocurrencies capable of extraordinary returns – far beyond sector-wide performance.

In essence, sector ETFs provide broad exposure with moderate risk, while selecting individual stocks or cryptocurrencies can be riskier but may offer significantly higher returns.