VOO vs. FXAIX

At a glance

Data last verified: pending verification

ETF vs. mutual fund: the real difference

FXAIX tracks the same s&p 500 index as voo, but as a mutual fund priced once daily rather than an etf traded intraday. That means VOO’s share price moves throughout the trading day and can be bought or sold like a stock, while FXAIX is bought or sold at a single net asset value (NAV) calculated after markets close. For long-term investors simply accumulating shares over time, this distinction has little effect on outcomes.

Which should you choose?

If you already have a Fidelity brokerage account and prefer mutual fund mechanics (including the ability to invest a specific dollar amount without worrying about whole share prices), FXAIX is a natural fit. If you want a fund that trades like a stock and is broadly accessible across any broker, VOO’s ETF structure is the more universal option.

Project a VOO-based investment with our VOO calculator. Since FXAIX tracks the same index, the growth mechanics are broadly comparable, though fees and share pricing differ.

More comparisons

• VOO vs. VFIAX — VOO’s own mutual-fund share class
• VOO vs. SPLG — another low-cost S&P 500 ETF alternative

Frequently asked questions