IYM vs XAR: Holdings Overlap
IYMiShares U.S. Basic Materials ETF
iShares · 38 holdings · $1.1B · as of 2026-04-30
XARState Street® SPDR® S&P® Aerospace & Defense ETF
State Street (SPDR) · 47 holdings · $6.4B · as of 2026-08-06
Holdings snapshots are 98 days apart (IYM: 2026-04-30, XAR: 2026-08-06). 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 XAR?
iShares U.S. Basic Materials ETF (IYM, by iShares) holds 38 positions; State Street® SPDR® S&P® Aerospace & Defense ETF (XAR, by State Street (SPDR)) holds 47. They have 2 holdings in common, and by portfolio weight the two funds are 3.1% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 3.1%Sum of the smaller weight of each shared holding
- Shared Holdings
- 2IYM holds 38 · XAR holds 47
- Weight in Shared Holdings
- IYM 3%·XAR 6%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
36 of 38 positions (96.8% of the fund) are not held by XAR. Showing the top 30 by weight.
Sector Breakdown
| Sector | IYM | XAR |
|---|---|---|
| Industrials | 11.4% | 98.4% |
| Materials | 88.4% | 0.0% |
| Other Sectors | 0.0% | 0.0% |
| Unclassified | 0.0% | 1.6% |
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. “Unclassified” is weight we could not classify (0% of IYM, 2% of XAR).
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% |
| XAR | +2.7% | +19.0% | +33.7% | +33.2% | +18.5% | +18.1% | 0.28% |
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 XAR →
Shared Holdings(2)
Frequently Asked Questions
How much do IYM and XAR overlap?
IYM and XAR overlap by 3.1% of portfolio weight. They share 2 holdings (IYM holds 38 positions and XAR holds 47), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IYM and XAR?
The two portfolios are 3.1% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of IYM and XAR?
The largest positions held by both funds are CRS and HXL. Together the top 2 shared positions account for 100% of the total overlap.
What does IYM own that XAR doesn't?
36 positions (96.8% of IYM) are unique to IYM, led by LIN, NEM and FCX. In the other direction, 45 positions (94.3% of XAR) are unique to XAR.