IYM vs VAW: Holdings Overlap
IYMiShares U.S. Basic Materials ETF
iShares · 38 holdings · $1.1B · as of 2026-04-30
VAWVanguard Materials Index Fund
Vanguard · 110 holdings · $3.0B · as of 2026-05-31
Holdings snapshots are 31 days apart (IYM: 2026-04-30, VAW: 2026-05-31). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are IYM and VAW?
iShares U.S. Basic Materials ETF (IYM, by iShares) holds 38 positions; Vanguard Materials Index Fund (VAW, by Vanguard) holds 110. They have 30 holdings in common, and by portfolio weight the two funds are 58.5% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 58.5%Sum of the smaller weight of each shared holding
- Shared Holdings
- 30IYM holds 38 · VAW holds 110
- Weight in Shared Holdings
- IYM 83%·VAW 59%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in IYM
8 of 38 positions (16.6% of the fund) are not held by VAW.
Sector Breakdown
| Sector | IYM | VAW |
|---|---|---|
| Materials | 88.4% | 99.5% |
| Industrials | 11.4% | 0.0% |
| Energy | 0.0% | 0.3% |
| Other Sectors | 0.0% | 0.0% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts.
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IYM | +5.2% | +23.1% | +34.0% | +13.6% | +9.2% | +10.8% | 1.24% |
| VAW | +3.2% | +14.7% | +20.8% | +10.3% | +7.0% | +10.1% | 1.34% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in IYM vs VAW →
Shared Holdings(30)
The top 10 shared positions account for 80% of the overlap, led by LIN, NEM and FCX.
 LINLinde PLC COM EUR0.001 | 19.89% | 14.92% | 14.92% |
|---|---|---|---|
 NEMNewmont Corporation COM | 10.51% | 7.69% | 7.69% |
 FCXFreeport-McMoRan Inc. CL B | 7.25% | 6.06% | 6.06% |
 ECLEcolab Inc. COM | 5.80% | 4.19% | 4.19% |
 APDAir Products & Chemicals, Inc. COM | 4.75% | 3.81% | 3.81% |
 NUENucor Corporation COM | 4.43% | 3.67% | 3.67% |
 STLDSteel Dynamics, Inc. COM | 3.38% | 2.32% | 2.32% |
 ALBAlbemarle Corp COM | 2.57% | 1.33% | 1.33% |
 AAAlcoa Corporation COM | 1.83% | 1.29% | 1.29% |
 RSReliance Inc COM | 2.11% | 1.28% | 1.28% |
 IFFInternational Flavors & Fragrances Inc. COM | 2.00% | 1.25% | 1.25% |
 RGLDRoyal Gold, Inc. COM | 2.18% | 1.22% | 1.22% |
 CFCF Industries Holdings, Inc. COM | 2.15% | 1.12% | 1.12% |
 LYBLyondellBasell Industries NV COM EUR0.04 CLASS 'A' | 2.13% | 1.10% | 1.10% |
 IPInternational Paper Co. COM | 1.77% | 1.08% | 1.08% |
 SOLSSolstice Advanced Materials Inc. COM SHS | 1.45% | 0.86% | 0.86% |
 AVYAvery Dennison Corporation COM | 1.40% | 0.79% | 0.79% |
 ESIElement Solutions Inc COM | 1.07% | 0.63% | 0.63% |
 MPMP Materials Corp., Class A | 1.05% | 0.59% | 0.59% |
 EMNEastman Chemical Company COM | 0.92% | 0.56% | 0.56% |
 CLFCleveland-Cliffs Inc COM | 0.64% | 0.50% | 0.50% |
 MOSThe Mosaic Company COM | 0.82% | 0.49% | 0.49% |
 NEUNewmarket Corporation COM | 0.48% | 0.40% | 0.40% |
 CECelanese Corporation COM | 0.82% | 0.37% | 0.37% |
 WLKWestlake Corporation COM | 0.43% | 0.21% | 0.21% |
Frequently Asked Questions
How much do IYM and VAW overlap?
IYM and VAW overlap by 58.5% of portfolio weight. They share 30 holdings (IYM holds 38 positions and VAW holds 110), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IYM and VAW?
The two portfolios are 58.5% identical by weight. Owning both is defensible: they share a meaningful core, but each fund adds exposure the other lacks.
What are the biggest shared holdings of IYM and VAW?
The largest positions held by both funds are LIN, NEM, FCX, ECL and APD. Together the top 10 shared positions account for 80% of the total overlap.
What does IYM own that VAW doesn't?
8 positions (16.6% of IYM) are unique to IYM, led by FAST, AU and CRS. In the other direction, 80 positions (41.3% of VAW) are unique to VAW.