This 2 ETF Portfolio Historically Outperforms the S&P 500 With Less Volatility

A backtest (1995–June 2026) suggests a simple 50/50 portfolio of the Invesco S&P 500 Momentum ETF (SPMO) and Invesco S&P 500 Quality ETF (SPHQ) delivered 14.17% annualized returns vs 11.08% for the S&P 500, with lower volatility and smaller maximum drawdowns. Momentum (tracked by SPMO) historically outperforms in bull markets, while quality (tracked by SPHQ) tends to hold up better in downturns. The ETFs’ low expense ratios (0.13% momentum, 0.15% quality) are cited as limiting fee drag, though the article notes past performance may not predict future results.

Analysis

The real signal here is not that this blend is “better,” but that capital is still being pushed toward rules-based factor packaging instead of stock-picking. That is a modest tailwind for ETF sponsors and index owners, but the economics are small: the bigger implication is continued passive crowding into a narrower set of large-cap winners, which can extend momentum until positioning becomes self-reinforcing.

On the competitive side, quality/momentum baskets tend to amplify existing index leadership. That helps names that already screen well on profitability and trend, while pressuring active managers whose portfolios are forced to hold lower-quality laggards for benchmark reasons. The second-order risk is crowding: if advisors and retail adopt the same two-factor recipe, reversals get uglier because the same holdings get sold at once when volatility spikes.

Time horizon matters. Over days to weeks, this is mostly a flow story with little fundamental read-through; over 1-3 months, a stable tape should keep momentum factor products in favor. Over 6-18 months, the blend works only if dispersion stays high and rates/liquidity do not compress equity multiples; a sharp VIX expansion or breadth deterioration would be the clearest falsifier.

Contrarian view: the consensus overstates the durability of backtests and understates regime dependence. Momentum is usually the best factor until it isn’t, and quality tends to lag in fast, liquidity-driven rallies. The more crowded this becomes, the more it behaves like a beta trade with factor branding rather than durable alpha.

Key Decisions for Investors

• No immediate standalone trade on the article; treat it as a flow alert and wait for incremental AUM data in SPMO/SPHQ over the next 2-4 weeks before sizing exposure.
• If broad-market volatility stays contained, initiate a small tactical long in SPMO versus SPY on pullbacks; thesis breaks if VIX spikes above 25 or if equal-weight S&P outperforms by >5% over a month.
• Add a modest SPHQ position as a defensive hedge against a growth-led drawdown; best held 3-6 months, with the trade invalidated if cyclicals and small caps regain leadership on improving breadth.
• Avoid chasing NVDA/NFLX solely because they are momentum exemplars; use the ETFs for factor exposure rather than single-name beta unless you already have a separate fundamental view.
• Small long SPGI only as a low-conviction beneficiary of continued index/factor adoption; upside is limited and mainly tied to ETF AUM growth rather than any near-term earnings re-rate.