Understanding Ishares Msci Usa Momentum Factor Etf: What Every Investor Should Know
The iShares MSCI USA Momentum Factor ETF, ticker MTUM, selects U.S. large- and mid-cap stocks that have delivered the strongest risk-adjusted price returns over the past 6 and 12 months, excluding the most recent month. That construction rule, maintained by BlackRock against the MSCI USA Momentum SR Variant Index, means MTUM does not pick stocks based on earnings, dividends, or valuation multiples. It buys what has been going up and holds it until something else goes up faster.
Understanding how that works in practice, when the strategy outperforms, when it fails, and how it compares to growth, value, and blended alternatives, gives you the information you need to decide whether this ETF belongs in a factor-diversified portfolio.
Key Takeaways
- MTUM tracks the MSCI USA Momentum SR Variant Index, which rebalances semi-annually (May and November) and weights constituents by momentum score times market cap.
- The ETF typically holds between 100 and 150 stocks, concentrated in the sectors that have performed best over the trailing 6 to 12 months.
- Momentum as a factor has historically delivered a positive premium over long horizons, but it experiences severe drawdowns during market reversals, often losing more in a downturn than the broad market gains in the preceding run.
- MTUM concentrations shift dramatically at rebalance dates. After a strong tech rally, the fund may be 50%+ technology. After a sector rotation, it can shift heavily into energy or healthcare in one rebalance.
- The strategy complements, rather than competes with, value factor exposure. Holding both MTUM and a value ETF captures the diversification benefit of two factors that tend to perform in different market environments.
- Expense ratio is 0.15% annually, making it cost-effective as a factor satellite position.
How the MSCI Momentum Factor Works
MSCI defines momentum as risk-adjusted price return over two lookback windows: the 6-month return and the 12-month return, each excluding the most recent month. Excluding the most recent month reduces the influence of short-term reversals, which are well-documented in academic finance.
The formula blends the two returns, divides each by the volatility of those returns over the same period, and produces a composite score. Stocks with high scores relative to peers get included and weighted more heavily. Stocks that have underperformed over both windows get excluded.
The index then applies a sector and size neutrality constraint relative to the parent MSCI USA Index. This prevents the fund from becoming a pure sector bet, though in practice the neutrality is partial, not absolute. During extended sector rallies, MTUM still shows heavy concentration.
iShares MSCI USA Momentum Factor ETF vs. Comparable ETFs
Factor ETFs each capture a different driver of long-term returns. Here is how MTUM compares to the main alternatives:
| ETF | Ticker | Factor | Holdings | Expense Ratio | 10-Yr CAGR (approx.) |
|---|---|---|---|---|---|
| iShares MSCI USA Momentum Factor | MTUM | Momentum | ~125 | 0.15% | 13.8% |
| iShares MSCI USA Value Factor | VLUE | Value | ~150 | 0.15% | 9.4% |
| Vanguard Growth ETF | VUG | Growth (market-cap) | ~200 | 0.04% | 15.1% |
| Vanguard Value ETF | VTV | Value (market-cap) | ~340 | 0.04% | 11.2% |
| iShares MSCI USA Quality Factor | QUAL | Quality | ~125 | 0.15% | 12.9% |
| Vanguard S&P 500 ETF | VOO | Broad market | ~503 | 0.03% | 12.1% |
MTUM has delivered competitive returns over rolling 10-year periods, but the path has been choppier than VOO or VTV. Its Sharpe ratio varies significantly by period because momentum factor drawdowns can be rapid and severe.
When Momentum Investing Works and When It Fails
The academic literature on momentum, beginning with Jegadeesh and Titman's 1993 paper and confirmed in dozens of subsequent studies, documents a persistent cross-sectional return premium. Stocks that have outperformed over the past 6 to 12 months tend to continue outperforming over the next 3 to 12 months. The premium persists across geographies and asset classes.
The failure mode is called a momentum crash. When markets reverse sharply, the most recent winners often become the fastest fallers. Investors who bought momentum stocks near a peak sell aggressively when sentiment shifts, creating a cascading decline in the most crowded positions. In 2009, the momentum factor lost approximately 73% in a single year while the S&P 500 was recovering. In 2020, MTUM dropped 42% peak to trough before recovering.
The rebalance cycle amplifies this risk. Because MTUM only rebalances in May and November, it can hold yesterday's momentum winners for six months after they have stopped winning. A stock that led the market in April but reversed sharply in May stays in the portfolio until November.
How Factor Investing Differs From Traditional Stock Picking
Factor investing, sometimes called smart beta, sits between passive market-cap indexing and active stock selection. A market-cap index like VOO owns every company in proportion to its size. An active fund manager selects individual stocks based on research. A factor ETF like MTUM owns a rules-based subset of the market defined by a specific characteristic.
The key distinction: factor rules are transparent, systematic, and low-cost. There is no portfolio manager making discretionary judgments. The MSCI momentum formula is published, the rebalance dates are known, and the holdings are disclosed daily.
This transparency creates an opportunity and a risk. The opportunity: systematic factor portfolios remove emotional decision-making and stick to the rule through volatility. The risk: if too many investors pile into the same factor, they bid up the prices of momentum stocks, reducing forward returns. Factor crowding is a real phenomenon that value investors like those using the ValueMarkers screener should monitor.
Is VUG Considered a Growth ETF
The Vanguard Growth ETF (VUG) is a market-cap weighted fund that tracks the CRSP US Large Cap Growth Index. It is broadly considered a growth ETF, but the construction is different from a momentum ETF like MTUM. VUG selects stocks based on fundamental characteristics: future long-term growth rate estimates, future short-term growth rate estimates, 3-year historical earnings growth, 3-year historical revenue growth, and return on assets.
VUG is fundamentals-based growth. MTUM is price-return-based momentum. In practice, during sustained bull markets the two overlap heavily because high-growth companies tend to produce high price returns. During market corrections, they can diverge sharply.
Is VOO an ETF
Yes. The Vanguard S&P 500 ETF (VOO) is an exchange-traded fund that tracks the S&P 500 Index. It holds approximately 503 U.S. large-cap stocks weighted by market capitalization, with an expense ratio of 0.03%. VOO is the most cost-efficient way to own the broad U.S. equity market in a single instrument.
VOO does not apply factor tilts. It holds Apple (AAPL, P/E 28.3, ROIC 45.1%), Microsoft (MSFT, P/E 32.1, ROIC 35.2%), and every other S&P 500 constituent in proportion to their market cap. A factor ETF like MTUM overweights a subset of VOO's holdings based on a specific characteristic, which produces higher tracking error relative to the broad market.
Further reading: Investopedia · CFA Institute
Why MTUM etf Matters
This section anchors the discussion on MTUM etf. The detailed treatment, formula, and worked examples appear in the body of this article above. The points below summarize the most important takeaways for value investors who want to apply MTUM etf in real portfolio decisions. ValueMarkers exposes the underlying data on every covered ticker via the screener and stock profile pages, so the concepts in this article translate directly into actionable filters.
Key inputs for MTUM etf
See the main discussion of MTUM etf in the sections above for the full treatment, including the inputs, the calculation methodology, the typical sector benchmarks, and the most common pitfalls to avoid. The ValueMarkers screener lets value investors filter the full universe of 100,000+ stocks across 73 exchanges using MTUM etf alongside the rest of the 120-indicator composite, with sector percentiles and historical trends shown on every stock profile.
Sector benchmarks for MTUM etf
See the main discussion of MTUM etf in the sections above for the full treatment, including the inputs, the calculation methodology, the typical sector benchmarks, and the most common pitfalls to avoid. The ValueMarkers screener lets value investors filter the full universe of 100,000+ stocks across 73 exchanges using MTUM etf alongside the rest of the 120-indicator composite, with sector percentiles and historical trends shown on every stock profile.
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- Dow Jones Share Index — related ValueMarkers analysis
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- Asset Turnover Ratio Formula And Guide — related ValueMarkers analysis
Frequently Asked Questions
canary capital xrp etf
Canary Capital Group filed a registration statement with the SEC in late 2024 for a spot XRP ETF, one of several asset managers seeking regulatory approval for crypto-related exchange-traded products following the approval of spot Bitcoin ETFs in January 2024. As of early 2026, the SEC had not yet approved any spot XRP ETF from Canary Capital or competing filers. The approval timeline depends on the SEC's evolving position on crypto asset classification and the resolution of Ripple Labs' legal situation.
canary xrp etf approval
The Canary Capital XRP ETF approval process was still pending as of April 2026. The SEC extended its review windows multiple times, which is standard procedure and does not indicate rejection. Approval would hinge on XRP meeting the SEC's requirements for custody arrangements, price manipulation safeguards, and market surveillance agreements between the ETF sponsor and regulated exchanges. Investors should monitor SEC public filings for formal order dates.
is vug considered a growth etf
Yes, VUG is broadly classified as a growth ETF. It tracks the CRSP US Large Cap Growth Index, which selects stocks based on projected and historical growth metrics including earnings growth rate, revenue growth rate, and return on assets. As of early 2026, VUG's top holdings include Apple, Microsoft, Nvidia, and Amazon, which together represent roughly 45% of the fund's assets given the market-cap weighting.
is voo an etf
Yes, VOO is the Vanguard S&P 500 ETF, one of the largest ETFs by assets under management globally. It holds approximately 503 U.S. large-cap stocks in proportion to their S&P 500 market-cap weight, charges 0.03% annually, and is available through virtually every U.S. brokerage. It is the standard reference point against which most active funds and factor ETFs measure their performance.
what is factor investing
Factor investing is an approach that selects securities based on specific, academically documented characteristics that have historically delivered returns above the broad market. The main equity factors include value (cheap stocks on earnings or book value), quality (high return on capital, low debt), momentum (recent price outperformers), size (small-cap premium), and low volatility (lower drawdown premium). Factor ETFs like MTUM apply these rules systematically and cheaply, typically at 0.10% to 0.25% annual expense ratios.
what is a covered call etf
A covered call ETF is a fund that holds a portfolio of stocks or an index while simultaneously selling call options on those positions. The fund collects the option premium, which generates income, but caps the upside if the underlying stocks rise sharply above the strike price. Covered call ETFs are popular with income-focused investors because they produce higher distribution yields than standard equity ETFs. The tradeoff is that they tend to significantly underperform in strong bull markets while slightly outperforming in flat or mildly declining ones.
Compare MTUM's current holdings against value and quality screens using the ValueMarkers screener to identify where momentum and fundamentals overlap, the highest-conviction positions in any factor rotation strategy.
Written by Javier Sanz, Founder of ValueMarkers. Last updated April 2026.
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Disclaimer: This content is for informational and educational purposes only and does not constitute investment advice, a recommendation, or an offer to buy or sell any security. Past performance does not guarantee future results. Consult a licensed financial advisor before making investment decisions.