IYM vs KOMP: Holdings Overlap
IYMiShares U.S. Basic Materials ETF
iShares · 38 holdings · $1.1B · as of 2026-04-30
KOMPState Street® SPDR® S&P Kensho New Economies Composite ETF
State Street (SPDR) · 501 holdings · $2.6B · as of 2026-08-06
Holdings snapshots are 98 days apart (IYM: 2026-04-30, KOMP: 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 KOMP?
iShares U.S. Basic Materials ETF (IYM, by iShares) holds 38 positions; State Street® SPDR® S&P Kensho New Economies Composite ETF (KOMP, by State Street (SPDR)) holds 501. They have 6 holdings in common, and by portfolio weight the two funds are 1.6% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 1.6%Sum of the smaller weight of each shared holding
- Shared Holdings
- 6IYM holds 38 · KOMP holds 501
- Weight in Shared Holdings
- IYM 5%·KOMP 2%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
32 of 38 positions (95.2% of the fund) are not held by KOMP. Showing the top 30 by weight.
Only in KOMP
495 of 501 positions (98.1% of the fund) are not held by IYM. Showing the top 30 by weight.
Sector Breakdown
| Sector | IYM | KOMP |
|---|---|---|
| Materials | 88.4% | 2.5% |
| Information Technology | 0.0% | 29.9% |
| Industrials | 11.4% | 27.4% |
| Health Care | 0.0% | 12.4% |
| Consumer Discretionary | 0.0% | 4.3% |
| Other Sectors | 0.0% | 9.0% |
| Unclassified | 0.0% | 14.3% |
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, 14% of KOMP).
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% |
| KOMP | +3.5% | +18.5% | +29.5% | +17.6% | +3.3% | — | 1.47% |
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 KOMP →
Shared Holdings(6)
The top 6 shared positions account for 100% of the overlap, led by CRS, MOS and HXL.
 CRSCarpenter Technology Corporation COM | 2.29% | 0.51% | 0.51% |
|---|---|---|---|
 MOSThe Mosaic Company COM | 0.82% | 0.26% | 0.26% |
 HXLHexcel Corporation COM | 0.79% | 0.23% | 0.23% |
 HUNHuntsman Corporation COM | 0.26% | 0.23% | 0.23% |
 FMCFMC Corp. COM NEW | 0.21% | 0.30% | 0.21% |
 SMGThe Scotts Miracle-Gro Company CL A | 0.30% | 0.21% | 0.21% |
Frequently Asked Questions
How much do IYM and KOMP overlap?
IYM and KOMP overlap by 1.6% of portfolio weight. They share 6 holdings (IYM holds 38 positions and KOMP holds 501), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IYM and KOMP?
The two portfolios are 1.6% 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 KOMP?
The largest positions held by both funds are CRS, MOS, HXL, HUN and FMC. Together the top 6 shared positions account for 100% of the total overlap.
What does IYM own that KOMP doesn't?
32 positions (95.2% of IYM) are unique to IYM, led by LIN, NEM and FCX. In the other direction, 495 positions (98.1% of KOMP) are unique to KOMP.