Generated April 2026 from current fund data.
Overview
IVV and SPLG are both passively managed ETFs tracking the S&P 500 Index, delivering exposure to 500 large-cap U.S. equities. The key distinction is scale and cost: IVV is BlackRock's flagship large-cap core holding with $720 billion in assets, while SPLG is State Street's leaner alternative with $97 billion. Both charge minimal fees, but SPLG edges out IVV on expense ratio by a single basis point.
How they differ
The biggest difference is asset scale. IVV's $720 billion AUM dwarfs SPLG's $97 billion, which typically means tighter bid-ask spreads and lower trading friction for IVV—a meaningful advantage for large institutional trades. Second, expense ratios separate them by just 1 basis point: SPLG costs 0.02% versus IVV's 0.03%, favoring SPLG by roughly $10 annually per $100,000 invested. Third, distribution yields are nearly identical (IVV 1.10%, SPLG 1.12%), both reflecting their S&P 500 holdings and quarterly payout schedules. Both track the same index and carry a beta of 1.0.
Who each is best for
IVV: Core portfolio builders seeking maximum liquidity and tightest trading costs; best suited for investors making frequent rebalances or trading large positions where AUM scale matters most.
SPLG: Cost-conscious buy-and-hold investors comfortable with slightly lower trading volume in exchange for the lowest expense ratio; ideal for long-term retirement accounts where trading friction is minimal.
Key risks to know
- Index tracking risk. Both funds carry tiny but non-zero tracking error relative to the S&P 500 due to cash drag and expense ratios; this effect is negligible for either but measurable over decades.
- Concentration in mega-cap tech. The S&P 500 itself is increasingly concentrated in a handful of large technology and communications stocks (roughly 30% of the index). Both funds inherit this risk equally.
- Liquidity divergence in stressed markets. While IVV's larger AUM typically means better execution, both remain highly liquid; in extreme dislocations, IVV's size could offer a marginal advantage.
- Dividend timing and tax drag. Quarterly distributions can trigger short-term capital gains if held outside tax-deferred accounts; neither fund has an advantage here.
Bottom line
If you prioritize execution quality and the tightest trading spreads—especially for large positions—IVV's scale and institutional adoption make it the practical choice. If you're building a buy-and-hold core position and value the lowest possible annual cost, SPLG's 1-basis-point fee advantage compounds meaningfully over 20+ years. Both deliver identical market exposure; the choice hinges on your trading frequency and portfolio size, not investment philosophy. Past performance of either fund doesn't predict future S&P 500 returns.
AI-generated analysis for educational purposes only. Verify important details independently; past performance does not guarantee future results.