RSP vs VOO: Which ETF Is Better in 2026?

Approximate as of mid-2026; verify with each issuer.

Cost. RSP charges 0.20% a year and VOO charges 0.03%. On a $10,000 holding that is roughly $20 versus $3 a year. The gap looks tiny, but VOO keeps a little more of your return every year, and over two or three decades of compounding that difference grows into real money.

Dividend yield. RSP yields about ~1.49% and VOO about ~1.0%. RSP pays more income today, which matters if you are drawing from the portfolio. If you are reinvesting for growth, total return (price plus dividends) matters more than the headline yield.

Size and liquidity. RSP holds about ~$89.1 billion versus VOO's ~$1.7 trillion. Both are large enough to trade with tight bid-ask spreads, so for a buy-and-hold investor the size gap rarely changes anything in practice; it mostly tells you how widely each fund is already held.

Concentration. RSP's largest position is DELL at about 0.54%, and VOO's is NVDA at ~7.9%. They share top names (MU), so owning both is less diversification than it looks: you are doubling down on the same companies.

Issuer. RSP is run by Invesco and VOO by Vanguard. Invesco runs the QQQ franchise and a broad factor lineup. Vanguard is investor-owned and known for rock-bottom fees.

RSP (S&P 500 Equal Weight) and VOO (S&P 500) give you genuinely different exposure, so this is a choice of what you want to own, not just which is cheaper. A broad-market fund suits a core, long-horizon holding you can size large and forget. A narrower, sector, or growth-tilted fund adds concentration and usually more volatility, which suits a longer time horizon and a higher risk tolerance, and is better used as a satellite position than as your whole portfolio. RSP's higher yield leans more toward income and steadier names; the other tilts more toward growth and price appreciation.

Holds every S&P 500 constituent at roughly the same weight and rebalances quarterly, so a handful of megacaps do not drive returns the way they do in VOO or SPY. That gives more exposure to the average large-cap company at a higher 0.20% fee.

Full RSP guide

Tracks the S&P 500 Index, the standard measure of US large-cap equity. Effectively identical exposure to SPY and IVV at a 0.03% expense ratio. Used as a core building block in most diversified portfolios.

Full VOO guide

• Pick RSP if you want S&P 500 Equal Weight exposure at 0.20%.
• Pick VOO if you want S&P 500 exposure at 0.03%.
• Overlap: they share top holdings (MU), so owning both adds less diversification than it appears.
• Cost: 0.20% vs 0.03%, a small but compounding difference.

RSP (S&P 500 Equal Weight) and VOO (S&P 500) give you different exposure, so pick by what you want to own, not by which is "better". They are different enough to hold together if you want both. Walnut can show the overlap against your real portfolio before you decide.

Both funds lean heavily on DELL, so understanding that single company explains a lot of what drives either ETF.