IVV vs VOO: Which Is the Better Pick in 2026?

Overview

IVV and VOO are both passively managed ETFs that track the S&P 500 Index, holding the same 500 large-cap U.S. stocks. The key distinction is size: VOO is roughly twice as large by assets under management ($1.42 trillion vs. $721 billion), which gives it a structural advantage in trading efficiency and fee sustainability. Both charge an identical 0.03% expense ratio and distribute dividends quarterly.

How they differ

The first and most material difference is scale. VOO's $1.42 trillion in AUM versus IVV's $721 billion means VOO likely benefits from tighter bid-ask spreads and lower trading costs at the margin—a real advantage for large positions or frequent traders, though negligible for buy-and-hold investors. Second, their distributions are nearly identical: IVV yields 1.10% and VOO yields 1.09%, with both paying quarterly. IVV has a longer track record (inception May 2000 vs. September 2010), but that historical depth offers little practical value given that both track an identical index. Third, both charge 0.03% in expenses, so cost is a genuine tie.

Who each is best for

IVV: Investors who already hold other BlackRock iShares products and value consolidated reporting, or those indifferent to fund family and prioritizing a slightly longer fund history (though this carries negligible real-world benefit).

VOO: Vanguard clients who value integration with existing Vanguard holdings, or larger institutional and retail investors where VOO's greater liquidity and AUM provide a marginal edge in execution quality.

Key risks to know

• Index concentration risk: Both funds are heavily weighted toward the "Magnificent Seven" and other mega-cap tech stocks, meaning they underperform in value-rotations or technology downturns.
• Market risk: A 1.0 beta means these funds move in lockstep with broad market volatility. In a 20% S&P 500 decline, both should fall similarly.
• Tracking error from cash drag: Minimal but real—both funds hold small cash balances that temporarily lag index performance on market rallies.
• Dividend tax drag: Quarterly distributions create tax-reporting complexity in taxable accounts and trigger short-term gains if reinvested; best held in tax-advantaged accounts for long-term holders.

Bottom line

These funds are functionally interchangeable for most investors. If you value maximum liquidity and belong to Vanguard, VOO's larger size edges ahead; if you're a BlackRock/iShares ecosystem user, IVV works equally well. The 0.03% expense ratio and 1.09–1.10% yield are so close that fund choice should hinge on account custody and existing relationships, not performance expectations. Past performance doesn't predict future results, and both will track the S&P 500 with near-perfect fidelity going forward.