Generated June 2026 from current fund data.
Overview
SPMO and VOO are both index-tracking ETFs that gain exposure to large-cap U.S. equities, but they cover meaningfully different slices of the S&P 500. VOO tracks the full index as a broad large-cap blend, holding all 500 companies with equal weight applied across market-cap tiers. SPMO applies a momentum filter to the same universe, concentrating its portfolio on the S&P 500's highest-momentum names, making it a factor-tilted strategy rather than a neutral market tracker.
How they differ
The core difference is exposure tilt: VOO delivers market-cap-weighted S&P 500 exposure, while SPMO overweights stocks showing the strongest price and earnings momentum trends. This structural choice drives a significant divergence in risk profile—SPMO carries a beta of 1.29 versus VOO's 1.0, meaning it swings harder than the broader index both up and down.
Yield separates them too. VOO distributes 1.17% annually, reflecting dividend yield across all 500 holdings; SPMO yields just 0.64%, typical for growth-tilted momentum portfolios that tend to hold younger, faster-growing companies that reinvest earnings rather than pay dividends.
Cost is a minor differentiator: SPMO's 0.13% expense ratio is still lean by industry standards but runs 0.10 percentage points higher than VOO's 0.03%. Scale also favors VOO—at $1033B in assets, it's roughly 50 times larger than SPMO's $20.3B, providing deeper trading liquidity and narrower bid-ask spreads.
Who each is best for
VOO: Fits investors seeking core large-cap equity exposure with minimal cost and maximum diversification. The broad market-cap-weighted approach suits buy-and-hold allocators who prefer market returns without style tilts.
SPMO: Designed for investors willing to accept higher volatility in exchange for upside capture when momentum trends favor growth and trend-following strategies. Works as an active satellite position within a larger equity allocation, not as a core holding.
Key risks to know
- Momentum factor drawdown risk. When market leadership rotates away from momentum toward value or defensive stocks, SPMO will lag VOO significantly. Momentum phases are cyclical and sometimes persist for years; investors holding through a correction in trending stocks face heightened losses.
- Higher volatility and beta drag in sideways markets. SPMO's 1.29 beta suggests amplified downside during broad selloffs. In choppy, range-bound periods, the extra volatility without directional tailwinds can erode cumulative returns relative to VOO.
- Concentration risk within momentum cohort. While SPMO still holds many names, momentum screens naturally cluster around similar sector and style characteristics (typically growth, tech-heavy). A shock specific to those sectors hits harder in SPMO than in VOO's balanced weighting.
- Lower income flow. The 0.64% yield is below VOO's 1.17%, a structural consequence of SPMO's growth-stock tilt. Investors relying on distributions will collect less cash from this fund.
Bottom line
VOO is the neutral market tracker—lowest cost, highest liquidity, and full index participation. SPMO bets that you want to concentrate bets on high-momentum stocks and can tolerate the extra swing. If you're building a core portfolio, VOO's simplicity and scale make it the default; if you're layering on a factor bet or believe momentum will outpace the market, SPMO's tilt may fit your thesis. Past performance of either strategy does not predict which will lead in the next cycle.
AI-generated analysis for educational purposes only. Verify important details independently; past performance does not guarantee future results.
