WFSPX vs VOO (2026)
iShares S&P 500 Index Fund Class K Shares and Vanguard S&P 500 ETF side by side. Both charge the same expense ratio (0.03%). Over the last five years VOO returned more (+76.54% vs +75.94%, total return). Their portfolios overlap by about 0% of weight. Not investment advice.
Fund facts#
Data provided bySource: Twelve DataReturns as of market close, Oct 30, 2026. The charts run through the Oct 30 close.
| WFSPX | VOO | |
|---|---|---|
| Focus | US Stock Index Funds | S&P 500 |
| Expense ratio | 0.03% | 0.03% |
| AUM | $59.1B | $988.5B |
| Distribution yield | — | 1.07% |
| Holdings | 1 | 504 |
| 1M total | -0.9% | -0.9% |
| YTD total | +11.7% | +11.8% |
| 1Y total | +12.3% | +12.4% |
| 3Y total | +88.5% | +89.0% |
| 5Y total | +75.9% | +76.5% |
| 10Y total | — | +319% |
| 3Y total CAGR | +23.5%/yr | +23.6%/yr |
| 5Y total CAGR | +12.0%/yr | +12.0%/yr |
| 10Y total CAGR | — | +15.4%/yr |
| Issuer | BlackRock | Vanguard |
| Inception | — | 2010-09-07 |
All returns are total returns (dividends reinvested), through the latest price during the session. CAGR = compound annual growth rate. '—' means the fund's history doesn't span the horizon. A mutual fund's AUM is its whole fund's, every share class together (its SEC filing); an ETF's is its own. Returns run to Oct 30, 2026, the last month-end, as fund companies report a mutual fund's: a fund that pays monthly books each month's income on its last business day, so a return to a later day would leave that month's income out.
Annualized returns (CAGR)#
Data provided bySource: Twelve DataCompound annual growth rate per holding period, total return, from weekly adjusted closes. Horizons a fund's history can't span show no bar; horizons no fund spans are omitted.
Performance, rebased#
Data provided bySource: Twelve DataReturns by year#
Data provided bySource: Twelve Data| Year | WFSPX | VOO |
|---|---|---|
| 2017 | — | +21.8% |
| 2018 | — | -4.5% |
| 2019 | — | +31.4% |
| 2020 | +18.4% | +18.3% |
| 2021 | +28.6% | +28.8% |
| 2022 | -18.2% | -18.2% |
| 2023 | +26.2% | +26.3% |
| 2024 | +24.9% | +25.0% |
| 2025 | +17.8% | +17.8% |
| 2026 YTD | +11.7% | +11.8% |
Total returns (dividends reinvested), calendar years.
Returns by year, charted#
Holdings overlap#
WFSPX and VOO overlap by about 0% of portfolio weight — 0 shared holdings out of 1 in WFSPX and 504 in VOO, from each fund's latest SEC filing (Jun 30, 2026 / Jun 30, 2026).
Top 10 holdings, side by side#
Merged top 10 across the funds — each column is the holding's % of that fund.
Growth from any starting date#
Data provided bySource: Twelve DataHover to move the starting point — every fund rebases to 1× at that date, so the comparison holds from any entry point back to 2019 (the earliest date all 2 funds existed). Log scale, weekly total returns.
Fund flows#
| Period | WFSPX | VOO |
|---|---|---|
| Jun 2026 | −$80.8M | −$8.5B |
| May 2026 | −$268.7M | +$15.8B |
| Apr 2026 | +$493.9M | +$28.5B |
| Mar 2026 | — | −$11.1B |
| Feb 2026 | — | +$14.5B |
| Jan 2026 | — | +$13.3B |
Net creations minus redemptions, derived from consecutive SEC N-PORT filings. The form only exists since mid-2019.
Fund flows, charted#
Methodology#
Returns are total returns (dividends reinvested) from daily adjusted closes. Holdings, overlap, sector weights and flows derive from each fund's public SEC filings (Form N-PORT), anchored on the latest filing and rolled forward daily by price moves. Overlap is the sum of the smaller weight across shared holdings. See each fund's full holdings: WFSPX holdings · VOO holdings. Past performance does not predict future returns; not investment advice.
FAQ#
- WFSPX or VOO — which is better?
- Both charge the same expense ratio (0.03%). Over the last five years VOO returned more (+76.54% vs +75.94%, total return). Their portfolios overlap by about 0% of weight. WFSPX and VOO on the same index — a mutual fund priced once a day against an ETF traded all day: the fee, the tracking and the minimum.
- How much do WFSPX and VOO overlap?
- WFSPX and VOO overlap by about 0% of portfolio weight, sharing 0 holdings (per each fund's latest SEC N-PORT filing, weights rolled forward to today).
- Is ChartRow affiliated with any of these funds?
- No. ChartRow is independent and not affiliated with, sponsored by, or endorsed by BlackRock, Vanguard. Comparisons are derived independently from public SEC filings and market data; not investment advice.