IYT vs MDYV: Holdings Overlap
IYTiShares U.S. Transportation ETF
iShares · 44 holdings · $2.3B · as of 2026-04-30
MDYVState Street® SPDR® S&P 400™ Mid Cap Value ETF
State Street (SPDR) · 297 holdings · $2.9B · as of 2026-08-06
Holdings snapshots are 98 days apart (IYT: 2026-04-30, MDYV: 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 MDYV?
iShares U.S. Transportation ETF (IYT, by iShares) holds 44 positions; State Street® SPDR® S&P 400™ Mid Cap Value ETF (MDYV, by State Street (SPDR)) holds 297. They have 9 holdings in common, and by portfolio weight the two funds are 3.6% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 3.6%Sum of the smaller weight of each shared holding
- Shared Holdings
- 9IYT holds 44 · MDYV holds 297
- Weight in Shared Holdings
- IYT 10%·MDYV 4%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
35 of 44 positions (90.2% of the fund) are not held by MDYV. Showing the top 30 by weight.
Only in MDYV
288 of 297 positions (96.3% of the fund) are not held by IYT. Showing the top 30 by weight.
Sector Breakdown
| Sector | IYT | MDYV |
|---|---|---|
| Industrials | 99.9% | 18.7% |
| Financials | 0.0% | 23.4% |
| Consumer Discretionary | 0.0% | 12.5% |
| Information Technology | 0.0% | 8.3% |
| Real Estate | 0.0% | 8.2% |
| Other Sectors | 0.0% | 28.8% |
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% |
| MDYV | +3.1% | +15.2% | +23.9% | +12.9% | +9.2% | +10.6% | 1.64% |
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 MDYV →
Shared Holdings(9)
The top 9 shared positions account for 100% of the overlap, led by KNX, AAL and R.
 KNXKnight-Swift Transportation Holdings Inc. Class A | 1.51% | 0.64% | 0.64% |
|---|---|---|---|
 AALAmerican Airlines Group Inc COM | 1.11% | 0.60% | 0.60% |
 RRyder System, Inc. COM | 1.43% | 0.58% | 0.58% |
 SAIASaia Inc COM | 1.71% | 0.55% | 0.55% |
 LSTRLandstar System Inc. COM | 0.90% | 0.34% | 0.34% |
 ALKAlaska Air Group Inc. COM | 0.64% | 0.32% | 0.32% |
 GXOGXO Logistics Inc. COMMON STOCK | 0.94% | 0.31% | 0.31% |
 KEXKirby Corporation | 1.17% | 0.22% | 0.22% |
 CARAvis Budget Group Inc. COM | 0.44% | 0.04% | 0.04% |
Frequently Asked Questions
How much do IYT and MDYV overlap?
IYT and MDYV overlap by 3.6% of portfolio weight. They share 9 holdings (IYT holds 44 positions and MDYV holds 297), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IYT and MDYV?
The two portfolios are 3.6% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of IYT and MDYV?
The largest positions held by both funds are KNX, AAL, R, SAIA and LSTR. Together the top 9 shared positions account for 100% of the total overlap.
What does IYT own that MDYV doesn't?
35 positions (90.2% of IYT) are unique to IYT, led by UNP, UBER and FDX. In the other direction, 288 positions (96.3% of MDYV) are unique to MDYV.