IYT vs SPMD: Holdings Overlap
IYTiShares U.S. Transportation ETF
iShares · 44 holdings · $2.3B · as of 2026-04-30
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 98 days apart (IYT: 2026-04-30, 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 IYT and SPMD?
iShares U.S. Transportation ETF (IYT, by iShares) holds 44 positions; State Street® SPDR® Portfolio S&P 400™ Mid Cap ETF (SPMD, by State Street (SPDR)) holds 399. They have 10 holdings in common, and by portfolio weight the two funds are 2.8% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 2.8%Sum of the smaller weight of each shared holding
- Shared Holdings
- 10IYT holds 44 · SPMD holds 399
- Weight in Shared Holdings
- IYT 14%·SPMD 3%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 IYT
34 of 44 positions (86.5% of the fund) are not held by SPMD. Showing the top 30 by weight.
Sector Breakdown
| Sector | IYT | SPMD |
|---|---|---|
| Industrials | 99.9% | 26.0% |
| Financials | 0.0% | 16.1% |
| Information Technology | 0.0% | 15.7% |
| Consumer Discretionary | 0.0% | 11.7% |
| Health Care | 0.0% | 10.3% |
| Other Sectors | 0.0% | 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 |
|---|---|---|---|---|---|---|---|
| IYT | +0.1% | +17.7% | +28.2% | +11.7% | +8.0% | +10.7% | 0.90% |
| 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 IYT vs SPMD →
Shared Holdings(10)
The top 10 shared positions account for 100% of the overlap, led by XPO, KNX and AAL.
 XPOXPO Inc COM | 3.69% | 0.63% | 0.63% |
|---|---|---|---|
 KNXKnight-Swift Transportation Holdings Inc. Class A | 1.51% | 0.63% | 0.63% |
 AALAmerican Airlines Group Inc COM | 1.11% | 0.29% | 0.29% |
 RRyder System, Inc. COM | 1.43% | 0.28% | 0.28% |
 SAIASaia Inc COM | 1.71% | 0.27% | 0.27% |
 KEXKirby Corporation | 1.17% | 0.20% | 0.20% |
 LSTRLandstar System Inc. COM | 0.90% | 0.17% | 0.17% |
 ALKAlaska Air Group Inc. COM | 0.64% | 0.16% | 0.16% |
 GXOGXO Logistics Inc. COMMON STOCK | 0.94% | 0.15% | 0.15% |
 CARAvis Budget Group Inc. COM | 0.44% | 0.06% | 0.06% |
Frequently Asked Questions
How much do IYT and SPMD overlap?
IYT and SPMD overlap by 2.8% of portfolio weight. They share 10 holdings (IYT holds 44 positions and SPMD holds 399), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IYT and SPMD?
The two portfolios are 2.8% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of IYT and SPMD?
The largest positions held by both funds are XPO, KNX, AAL, R and SAIA. Together the top 10 shared positions account for 100% of the total overlap.
What does IYT own that SPMD doesn't?
34 positions (86.5% of IYT) are unique to IYT, led by UNP, UBER and FDX. In the other direction, 389 positions (102.8% of SPMD) are unique to SPMD.