IVV vs VXF: how much do they really overlap?
IVV (iShares Core S&P 500 ETF, tracking the S&P 500) and VXF (Vanguard Extended Market ETF, tracking the S&P Completion) overlap by roughly 2% by weight. 0 of IVV's top 10 holdings also appear in VXF. A 50/50 blend of the two behaves like about 197 equally-weighted bets (diversification grade A). In short, the two funds hold almost none of the same securities — they are complementary, not redundant.
The same companies, in both funds
These 1 holdings appear in both IVV and VXF. The weight columns show how much of each fund each name represents.
| Holding | in IVV | in VXF |
|---|---|---|
| MRVL MARVELL TECHNOLOGY INC | 0.40% | 2.11% |
Only in IVV
iShares Core S&P 500 ETF — US large-cap. Its biggest holdings that VXF doesn’t have:
| NVDA NVIDIA CORP | 7.51% |
| AAPL APPLE INC | 6.58% |
| MSFT MICROSOFT CORP | 4.29% |
| AMZN AMAZON.COM INC | 3.61% |
| GOOGL ALPHABET INC CLASS A | 3.25% |
| AVGO BROADCOM INC | 2.77% |
| GOOG ALPHABET INC CLASS C | 2.59% |
| MU MICRON TECHNOLOGY INC | 2.02% |
Only in VXF
Vanguard Extended Market ETF — US mid/small completion. Its biggest holdings that IVV doesn’t have:
| SNOW Snowflake Inc. | 1.03% |
| NET Cloudflare Inc. Class A | 0.90% |
| BE Bloom Energy Corp. Class A | 0.87% |
| RKLB Rocket Lab Corp. | 0.80% |
| FLEX Flex Ltd. | 0.65% |
| MSTR MicroStrategy Inc. Class A | 0.59% |
| LNG Cheniere Energy Inc. | 0.57% |
| ALAB Astera Labs Inc. | 0.54% |
So — essentially different. Should you hold both?
IVV and VXF hold almost none of the same securities — they are complementary, not redundant. Held together they genuinely broaden your exposure — a 50/50 blend reaches ~197 effective positions (grade A), because they hold largely different securities.
Holdings as of — IVV: Jun 30, 2026 (iShares (BlackRock)); VXF: May 31, 2026 (Vanguard). Refreshed monthly. Overlap is measured across each fund’s largest holdings (top 50); the diffuse long tail barely moves the math.
See this for YOUR whole portfolio, free →IVV vs VXF — FAQ
- How much do IVV and VXF overlap?
- IVV and VXF overlap by approximately 2% measured by portfolio weight — that is the share of the smaller fund's holdings (by weight) that also sit inside the other. 0 of IVV's 10 largest holdings are also held by VXF. They share 1 of their listed top holdings in total.
- Is it redundant to hold both IVV and VXF?
- Because they hold almost none of the same securities — they are complementary, not redundant, holding both is not redundant — each fund covers largely different holdings, so together they broaden your exposure. A 50/50 blend has an effective 197 positions and a A diversification grade.
- What does VXF hold that IVV doesn't?
- VXF's largest holdings that IVV doesn't hold include SNOW, NET, BE, RKLB, FLEX. Its category is US mid/small completion, versus IVV's US large-cap.
- Which is more concentrated, IVV or VXF?
- IVV's top 10 holdings are 58% of its listed weight; VXF's are 42%. The more concentrated fund leans harder on its largest names.