iShares ETFs: List, Differences & How to Choose

iShares ETFs: What You Are Comparing

iShares ETFs are BlackRock-managed exchange-traded funds. The lineup ranges from broad-market building blocks to narrowly focused country, sector, factor, commodity-related, and other strategies.

That makes the fund name only the beginning of the research. Two iShares ETFs can have completely different portfolio jobs even though both carry the same brand.

Choose the account and portfolio role before the ticker. A Roth IRA is an account governed by tax rules. An ETF is an investment that may be held inside that account. BlackRock manages iShares funds, while a brokerage provides the account and trading access.

You can also hold iShares ETFs at many brokerages that are not owned by BlackRock.

iShares ETFs: Selected Funds and Research Categories

The following list uses selected iShares ETFs to illustrate different portfolio roles. It is not a complete fund catalog, ranking, or recommendation list. Always verify the current fund page and prospectus before investing.

ITOT vs. IVV: Total U.S. Market or S&P 500?

ITOT is designed to provide broad exposure to the U.S. stock market. IVV follows the S&P 500 and therefore focuses on large U.S. companies.

Those portfolios can overlap heavily because the largest U.S. companies represent a substantial portion of the total market.

Owning ITOT and IVV together therefore does not automatically create significantly more diversification. It can instead increase the portfolio's weight toward companies already represented in both funds.

Decide whether the portfolio needs broad U.S. market exposure or specifically S&P 500 exposure before choosing between them.

International iShares ETFs: IXUS, IEFA and IEMG

International ETFs can answer different geographic questions. IXUS is designed for broad non-U.S. stock exposure, while other iShares ETFs divide that market into narrower pieces.

IEFA focuses on developed markets outside the United States and Canada, while IEMG focuses on emerging markets.

An investor using IXUS should therefore check before adding another developed-market or emerging-market ETF. The second fund may increase a geographic allocation that is already included in the broader fund.

The useful comparison is not simply the number of international funds owned. It is the actual country, market-cap, and emerging-market exposure created by the combination.

Core Funds and Specialty Funds Solve Different Problems

A broad stock ETF can serve as a core portfolio building block. A sector, country, thematic, dividend, or factor ETF generally changes the portfolio by emphasizing a narrower subset of securities.

The fact that a specialty ETF owns dozens or hundreds of securities does not automatically make it broadly diversified.

A technology ETF can still represent a concentrated technology allocation. A country ETF can still depend heavily on one country's economy. A factor ETF can intentionally tilt toward particular company characteristics.

Before adding one, compare its largest holdings, sector weights, country exposure, and overlap with funds already owned.

Bond ETFs Require a Maturity and Credit Comparison

iShares offers Treasury, aggregate, corporate, municipal, short-duration, long-duration, and other bond ETFs.

Those funds can behave very differently. A Treasury ETF and a corporate-bond ETF may have similar maturity ranges while carrying different credit risks.

Longer duration generally creates greater sensitivity to changes in interest rates. Lower-quality bonds generally introduce greater credit risk.

AGG is an example of a broad U.S. investment-grade bond ETF, while narrower Treasury or corporate funds answer different portfolio questions.

Do not choose a bond ETF solely because its current yield is higher. Compare duration, credit quality, holdings, and portfolio role.

BlackRock Mutual Funds Are Not the iShares ETF List

BlackRock also manages mutual funds and other investment products. Those products should be researched separately from iShares ETFs.

A BlackRock mutual fund and an iShares ETF can target similar markets without being identical investments.

Compare the exact portfolio, benchmark or strategy, share class, expenses, account availability, and trading format instead of assuming the same company name makes two investments interchangeable.

A Practical iShares / BlackRock Comparison

Suppose an investor already owns a broad U.S. stock-market ETF and is considering adding an iShares technology or quality-factor ETF.

The first step is not to compare recent returns. It is to inspect what the existing broad fund already owns.

If the specialty ETF places even greater weight on many of the same large U.S. companies, adding it may increase concentration rather than introduce a genuinely new asset class.

By contrast, an international or bond allocation could fill a different portfolio role.

The correct comparison depends on the job the new ETF is supposed to perform.

Compare Costs Without Changing the Investment Question

Compare ETFs with similar exposure before allowing fees to determine the choice.

The expense ratio is an annual percentage charged inside the fund. It is not normally a separate monthly bill.

For a hypothetical $10,000 balance, a 0.05% annual expense ratio is about $5, while a 0.50% annual expense ratio is about $50, before changes in the investment balance.

These figures are teaching examples, not quoted expenses for the iShares ETFs discussed here.

ETF investors should also understand the bid-ask spread and any brokerage-specific trading costs.

A cheaper specialty ETF is not automatically preferable to a broad-market ETF if the two investments solve completely different portfolio problems.

iShares / BlackRock Mistakes Worth Catching

• Treating every iShares ETF as a broad index fund.
• Using the number of ETFs owned as a diversification score.
• Owning ITOT and IVV without recognizing the substantial overlap in large U.S. stocks.
• Adding an emerging-market ETF without checking whether a broader international ETF already includes emerging markets.
• Buying a sector ETF without comparing its largest holdings with an existing broad-market fund.
• Choosing a bond ETF based primarily on yield without reviewing duration and credit risk.
• Assuming BlackRock mutual funds and similarly named iShares ETFs are interchangeable.

Your iShares ETF Research Checklist

1. Define the portfolio role before choosing the ETF.
2. Record the exact fund name and ticker.
3. Open the official fund page and current prospectus.
4. Review the benchmark or investment strategy.
5. Compare geographic and company-size exposure.
6. Review sector weights and largest holdings.
7. Check overlap with funds already owned.
8. For bond ETFs, review duration and credit quality.
9. Compare the current expense ratio and trading costs.
10. Check brokerage access, recurring-investment support, and fractional-share rules.
11. Consider taxes before selling existing taxable holdings.

Keep the checklist with your investment notes so future portfolio reviews use the same criteria. Diversification can reduce concentration risk, but it cannot guarantee a profit or prevent losses.

Build the Allocation Before Picking the Brand

BlackRock offers a very large investment lineup, but a large catalog does not replace an asset-allocation plan.

Decide how U.S. stocks, international stocks, bonds, and any deliberate specialty allocations fit the household's goals first.

Then compare iShares ETFs that actually fill those roles.

Use asset allocation for beginners to define the mix, the diversification guide to check concentration, and the investment fee calculator to test recurring cost assumptions.

Compare other ETF and mutual fund companies when you want to research another provider for the same portfolio role.