Generated August 8, 2026.
Overview
SPYG and VUG are both ultra-low-cost large-cap growth ETFs that track different growth indexes. SPYG follows the S&P 500 Growth Index via State Street, while VUG tracks the CRSP US Large Cap Growth Index via Vanguard. The key distinction is their underlying methodology: S&P's approach versus CRSP's construction rules will produce different sector weights, holding counts, and slightly different volatility profiles.
How they differ
Both charge 0.04% in expenses and distribute quarterly, but their index rules diverge. SPYG tracks the S&P 500 Growth subset, while VUG uses the broader CRSP US Large Cap Growth methodology—meaning the two indexes weight holdings differently and may exclude or include different companies within the growth universe. VUG is substantially larger, with $230B in AUM versus SPYG's $54.7B, which typically translates to tighter spreads and more trading liquidity. SPYG carries a beta of 1.2, while VUG's is 1.26, suggesting VUG amplifies broad market swings slightly more; both distributions are minimal (0.48% for SPYG, 0.41% for VUG), confirming these are growth-focused funds that prioritize capital appreciation over income.
Who each is best for
SPYG: Fits investors seeking the S&P's methodology for growth selection, preferring State Street's portfolio construction and willing to accept the slightly smaller fund size in exchange for a tighter index tracking universe.
VUG: Fits investors who value the largest, most liquid growth ETF available and prefer Vanguard's fund structure; the $230B AUM and CRSP's large-cap growth rules appeal to those prioritizing execution efficiency and deep secondary-market depth.
Key risks to know
- Index methodology mismatch: Holdings and sector concentrations will differ between the S&P 500 Growth and CRSP US Large Cap Growth indexes; investors comparing performance should account for these structural divergences rather than attributing differences solely to fund management.
- Growth volatility amplification: Both ETFs carry betas above 1.2, meaning they will likely amplify downturns during risk-off periods—particularly acute if growth stocks underperform value in a rising-rate environment.
- Minimal income offset: With distribution yields below 0.50%, neither fund provides cushion against price declines through dividend reinvestment; total return depends almost entirely on capital appreciation.
- Sector concentration risk: Both track growth indexes that can concentrate heavily in technology and communication services; a sector downturn affects both similarly, though weighting differences may cause modest divergence in drawdowns.
Bottom line
Both are ultra-cheap, liquid vehicles for large-cap growth exposure. If you prioritize S&P's growth methodology and accept a smaller fund, SPYG delivers identical expense ratios; if maximum liquidity and Vanguard's CRSP framework appeal to you, VUG's $230B scale offers a meaningful advantage. Index construction differs between the two, so understanding how each defines growth stocks within the large-cap universe matters for your portfolio fit.
AI-generated analysis for educational purposes only. Verify important details independently; past performance does not guarantee future results.