IJH vs VXF: how much do they really overlap?
IJH (iShares Core S&P Mid-Cap ETF, tracking the S&P MidCap 400) and VXF (Vanguard Extended Market ETF, tracking the S&P Completion) overlap by roughly 26% by weight. 10 of IJH's top 10 holdings also appear in VXF. A 50/50 blend of the two behaves like about 1061 equally-weighted bets (diversification grade A). In short, the two funds share a meaningful core of the same megacaps, but each also brings real exposure the other lacks.
The same companies, in both funds
These 19 holdings appear in both IJH and VXF. The weight columns show how much of each fund each name represents.
| Holding | in IJH | in VXF |
|---|---|---|
| TWLO TWILIO INC CLASS A | 0.86% | 0.34% |
| FTI TECHNIPFMC PLC | 0.72% | 0.33% |
| CW CURTISS WRIGHT CORP | 0.77% | 0.32% |
| NVT NVENT ELECTRIC PLC | 0.75% | 0.32% |
| STRL STERLING INFRASTRUCTURE INC | 0.71% | 0.31% |
| XPO XPO INC | 0.66% | 0.30% |
| ILMN ILLUMINA INC | 0.73% | 0.29% |
| P EVERPURE INC CLASS A | 0.68% | 0.29% |
| CRS CARPENTER TECHNOLOGY CORP | 0.84% | 0.28% |
| ATI ATI INC | 0.74% | 0.28% |
| MTSI MACOM TECHNOLOGY SOLUTIONS INC | 0.68% | 0.28% |
| UTHR UNITED THERAPEUTICS CORP | 0.63% | 0.28% |
| FN FABRINET | 0.55% | 0.28% |
| MTZ MASTEC INC | 0.70% | 0.27% |
| NXT NEXTPOWER INC CLASS A | 0.48% | 0.27% |
+ 4 more shared holdings.
Only in IJH
iShares Core S&P Mid-Cap ETF — US mid-cap. Its biggest holdings that VXF doesn’t have:
| USFD US FOODS HOLDING CORP | 0.62% |
| RBA RB GLOBAL INC | 0.59% |
| LSCC LATTICE SEMICONDUCTOR CORP | 0.57% |
| RBC RBC BEARINGS INC | 0.56% |
| SNX TD SYNNEX CORP | 0.55% |
| BURL BURLINGTON STORES INC | 0.55% |
| TTMI TTM TECHNOLOGIES INC | 0.53% |
| RS RELIANCE STEEL & ALUMINUM | 0.52% |
Only in VXF
Vanguard Extended Market ETF — US mid/small completion. Its biggest holdings that IJH doesn’t have:
| MRVL Marvell Technology Inc. | 2.11% |
| 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% |
So — partly overlapping. Should you hold both?
IJH and VXF share a meaningful core of the same megacaps, but each also brings real exposure the other lacks. Held together they keep a shared megacap core but each still pulls in exposure the other lacks, so a 50/50 blend spreads to ~1061 effective positions (grade A).
Holdings as of — IJH: 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 →IJH vs VXF — FAQ
- How much do IJH and VXF overlap?
- IJH and VXF overlap by approximately 26% measured by portfolio weight — that is the share of the smaller fund's holdings (by weight) that also sit inside the other. 10 of IJH's 10 largest holdings are also held by VXF. They share 19 of their listed top holdings in total.
- Is it redundant to hold both IJH and VXF?
- Because they share a meaningful core of the same megacaps, but each also brings real exposure the other lacks, holding both is partly redundant: you double up on a shared core (TWLO) while each fund still adds distinct exposure. A 50/50 blend has an effective 1061 positions and a A diversification grade.
- What does VXF hold that IJH doesn't?
- VXF's largest holdings that IJH doesn't hold include MRVL, SNOW, NET, BE, RKLB. Its category is US mid/small completion, versus IJH's US mid-cap.
- Which is more concentrated, IJH or VXF?
- IJH's top 10 holdings are 27% of its listed weight; VXF's are 42%. The more concentrated fund leans harder on its largest names.