ITB vs SPMD: Holdings Overlap
ITBiShares U.S. Home Construction ETF
iShares · 46 holdings · $2.3B · as of 2026-03-31
SPMDState Street® SPDR® Portfolio S&P 400™ Mid Cap ETF
State Street (SPDR) · 399 holdings · $18.5B · as of 2026-08-06
Holdings snapshots are 128 days apart (ITB: 2026-03-31, SPMD: 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 ITB and SPMD?
iShares U.S. Home Construction ETF (ITB, by iShares) holds 46 positions; State Street® SPDR® Portfolio S&P 400™ Mid Cap ETF (SPMD, by State Street (SPDR)) holds 399. They have 9 holdings in common, and by portfolio weight the two funds are 2.2% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 2.2%Sum of the smaller weight of each shared holding
- Shared Holdings
- 9ITB holds 46 · SPMD holds 399
- Weight in Shared Holdings
- ITB 16%·SPMD 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 ITB
37 of 46 positions (84.0% of the fund) are not held by SPMD. Showing the top 30 by weight.
Sector Breakdown
| Sector | ITB | SPMD |
|---|---|---|
| Consumer Discretionary | 73.0% | 11.7% |
| Industrials | 20.8% | 26.0% |
| Financials | 0.0% | 16.1% |
| Information Technology | 0.0% | 15.7% |
| Health Care | 0.0% | 10.3% |
| Other Sectors | 6.0% | 25.8% |
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 |
|---|---|---|---|---|---|---|---|
| ITB | +1.3% | +5.4% | -1.5% | +5.3% | +8.1% | +14.1% | 0.64% |
| SPMD | +3.1% | +18.5% | +26.0% | +14.6% | +9.1% | +11.3% | 1.19% |
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 ITB vs SPMD →
Shared Holdings(9)
The top 9 shared positions account for 100% of the overlap, led by OC, TOL and SSD.
 OCOwens Corning COM | 1.98% | 0.65% | 0.65% |
|---|---|---|---|
 TOLToll Brothers, Inc. COM | 5.25% | 0.39% | 0.39% |
 SSDSimpson Manufacturing Co Inc. COM | 1.58% | 0.22% | 0.22% |
 EXPEagle Materials Inc. COM | 1.32% | 0.18% | 0.18% |
 FNDFloor & Decor Holdings, Inc., Class A | 1.22% | 0.18% | 0.18% |
 FBINFortune Brands Innovations Inc COM | 1.04% | 0.17% | 0.17% |
 UFPIUFP Industries Inc COM | 1.19% | 0.14% | 0.14% |
 TREXTrex Company, Inc. COM | 0.87% | 0.14% | 0.14% |
 KBHKB Home COM | 1.33% | 0.10% | 0.10% |
Frequently Asked Questions
How much do ITB and SPMD overlap?
ITB and SPMD overlap by 2.2% of portfolio weight. They share 9 holdings (ITB holds 46 positions and SPMD holds 399), based on each fund's latest SEC-reported holdings.
Is it redundant to own both ITB and SPMD?
The two portfolios are 2.2% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of ITB and SPMD?
The largest positions held by both funds are OC, TOL, SSD, EXP and FND. Together the top 9 shared positions account for 100% of the total overlap.
What does ITB own that SPMD doesn't?
37 positions (84.0% of ITB) are unique to ITB, led by DHI, PHM and LEN. In the other direction, 390 positions (103.5% of SPMD) are unique to SPMD.