Wealthy PotFZROX vs VTI: Fidelity's Zero-Fee Total Market vs Vanguard's
FZROX and VTI are both total U.S. stock market funds, they aim to own essentially every American company. The difference isn't really the exposure (that's nearly identical) or the fee (both are almost nothing). It's that one is a Fidelity-only mutual fund you can't move, and the other is a portable Vanguard ETF you can hold anywhere. This guide uses figures from the funds' own documents.
The Short Answer
- Want the whole U.S. market for literally 0.00%, and you're staying at Fidelity? FZROX. It charges nothing and holds ~2,646 stocks, best in a Fidelity IRA.
- Want a portable ETF you can hold at any broker? VTI. Its 0.03% fee is trivial ($3/year per $10,000), it holds ~3,531 stocks, and unlike FZROX it can be transferred in-kind between brokers.
The exposure is almost the same; the decision is about the fee (both negligible) and, more importantly, whether you're locked in.
Same Idea, Two Fund Families
- FZROX is the Fidelity ZERO Total Market Index Fund. It tracks the Fidelity U.S. Total Investable Market Index (Fidelity's own proprietary index), holds about 2,646 stocks, and charges 0.00%. It launched in 2018.
- VTI is the Vanguard Total Stock Market ETF. It tracks the Morningstar US Total Market Index (renamed from CRSP in 2026), holds about 3,531 stocks, and charges 0.03%. It has a decades-long record.
Both aim to capture the entire U.S. market, large, mid, and small caps. VTI holds somewhat more names, but because both are cap-weighted and dominated by the same large caps, their returns track very closely.
FZROX vs VTI Side by Side
| Feature | FZROX | VTI |
|---|---|---|
| Fund type | Mutual fund (Fidelity) | ETF (Vanguard) |
| Expense ratio | 0.00% | 0.03% |
| Index tracked | Fidelity U.S. Total Investable Market (proprietary) | Morningstar US Total Market (formerly CRSP) |
| What it covers | Entire U.S. market (large + mid + small) | Entire U.S. market (large + mid + small) |
| Number of holdings | ~2,646 | ~3,531 |
| Minimum investment | $0 | 1 share (~$1 fractional at Vanguard) |
| Inception | Aug 2, 2018 | May 24, 2001 |
| Avg annual return (NAV) | 14.39% since inception (2018) | 15.04% over 10 years |
| Transfer to another broker in-kind? | No | Yes |
The return rows cover different periods (FZROX has only existed since 2018), so they aren't a head-to-head race. Over any shared window the two track within a hair of each other, as you'd expect from two total-market funds.
The Catch: Portability
Here's the deciding factor. FZROX, as a Fidelity ZERO fund, uses a proprietary index and is only available at Fidelity. Per Fidelity's prospectus, it cannot be transferred in-kind to another broker, so if you ever leave Fidelity you'd have to sell it, which in a taxable account means realizing capital gains and a possible tax bill.
VTI, a standard ETF, moves to any broker in-kind with no forced sale. That makes VTI's 0.03% fee look less like a cost and more like insurance against lock-in.
Rule of thumb: in a Fidelity IRA, lock-in barely matters (you can sell without tax), so FZROX's 0.00% shines. In a taxable account, or if you might change brokers, VTI's portability is worth far more than the tiny fee difference.
Which One Fits You
Choose FZROX if: you invest at Fidelity, want to pay literally 0.00%, and are holding it in an IRA (or you're confident you'll stay at Fidelity). It's a complete, free U.S. equity core. Prefer the S&P 500 instead of the total market? See FZROX vs FXAIX.
Choose VTI if: you want a portable ETF you can hold at any broker, you're investing in a taxable account, or you value the flexibility to move later. The 0.03% fee is negligible, and you get the same total-market exposure in a standard, transferable ETF. Comparing VTI's mutual-fund twin? See VTSAX vs VTI.
FAQ
Is FZROX or VTI better?
They own nearly the same thing, the total U.S. market, so performance is almost identical. FZROX charges 0.00% but is Fidelity-only and can't be transferred; VTI charges 0.03% and is a portable ETF you can hold anywhere. In a Fidelity IRA, FZROX's zero fee wins; in a taxable account or if you value portability, VTI wins.
Do FZROX and VTI hold the same stocks?
Nearly. Both aim to own the entire U.S. market; FZROX holds ~2,646 stocks via Fidelity's proprietary index and VTI ~3,531 via the Morningstar (formerly CRSP) index. The difference in count barely affects returns because both are dominated by the same large caps.
Can I transfer FZROX to Vanguard?
No. FZROX is a Fidelity ZERO fund and can't be transferred in-kind; you'd have to sell it (potentially taxable in a brokerage account) and rebuy VTI at the new broker. VTI transfers between brokers without selling.
Is the 0.03% fee on VTI worth it over FZROX's 0.00%?
For most people, yes, if portability matters. The fee difference is about $3 per year per $10,000, trivial next to the value of being able to move brokers without a taxable sale. In a Fidelity IRA where lock-in doesn't bite, FZROX's 0.00% is the better deal.
Related comparisons: FZROX vs FXAIX · VTSAX vs VTI · VTI vs VOO · VTI vs VXUS · All ETF comparisons
Primary sources: expense ratios, indexes, holdings, and returns are from the issuers' official documents for FZROX (Fidelity) and VTI (Vanguard). VTI's 10-year return and FZROX's since-inception return are as of Jun 30, 2026. The in-kind transfer restriction on Fidelity ZERO funds is per Fidelity's prospectus; the CRSP-to-Morningstar index rename is per Morningstar's 2026 announcement. For background, see the SEC's Investor.gov guide to mutual funds and ETFs.
This article is for educational purposes only and is not investment advice. Investing involves risk, including possible loss of principal, and past performance does not guarantee future results. Expense ratios and holdings change over time; confirm current figures on the issuer's site before investing. Consult a qualified financial professional before making investment decisions.