IFRA vs MDYG: Holdings Overlap
IFRAiShares U.S. Infrastructure ETF
iShares · 162 holdings · $4.6B · as of 2026-03-31
MDYGState Street® SPDR® S&P 400™ Mid Cap Growth ETF
State Street (SPDR) · 245 holdings · $2.9B · as of 2026-08-06
Holdings snapshots are 128 days apart (IFRA: 2026-03-31, MDYG: 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 IFRA and MDYG?
iShares U.S. Infrastructure ETF (IFRA, by iShares) holds 162 positions; State Street® SPDR® S&P 400™ Mid Cap Growth ETF (MDYG, by State Street (SPDR)) holds 245. They have 23 holdings in common, and by portfolio weight the two funds are 8.1% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 8.1%Sum of the smaller weight of each shared holding
- Shared Holdings
- 23IFRA holds 162 · MDYG holds 245
- Weight in Shared Holdings
- IFRA 9%·MDYG 11%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 IFRA
139 of 162 positions (90.4% of the fund) are not held by MDYG. Showing the top 30 by weight.
Sector Breakdown
| Sector | IFRA | MDYG |
|---|---|---|
| Utilities | 41.4% | 2.0% |
| Industrials | 35.2% | 29.8% |
| Information Technology | 0.0% | 20.2% |
| Health Care | 0.0% | 15.5% |
| Materials | 13.6% | 3.8% |
| Other Sectors | 8.8% | 28.5% |
| Unclassified | 0.9% | 0.0% |
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 (1% of IFRA, 0% of MDYG).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IFRA | -1.1% | +17.1% | +22.3% | +17.8% | +13.3% | — | 1.59% |
| MDYG | +3.3% | +21.6% | +28.0% | +16.0% | +8.5% | +11.3% | 0.56% |
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 IFRA vs MDYG →
Shared Holdings(23)
The top 10 shared positions account for 68% of the overlap, led by ATI, MTZ and CRS.
 ATIATI Inc COMMON STOCK | 0.83% | 1.63% | 0.83% |
|---|---|---|---|
 MTZMastec, Inc. COM | 0.81% | 0.85% | 0.81% |
 CRSCarpenter Technology Corporation COM | 0.80% | 1.48% | 0.80% |
 APGAPI Group Corp COM STK | 0.64% | 0.85% | 0.64% |
 STRLSterling Infrastructure Inc COM | 0.51% | 0.88% | 0.51% |
 MLIMueller Industries Inc. COM | 0.51% | 0.59% | 0.51% |
 DTMDT Midstream Inc COMMON STOCK | 0.37% | 0.52% | 0.37% |
 IESCIES Holdings Inc. COM | 0.39% | 0.36% | 0.36% |
 CSLCarlisle Companies Incorporated | 0.57% | 0.35% | 0.35% |
 TTEKTetra Tech Inc COM | 0.33% | 0.48% | 0.33% |
 WMSAdvanced Drainage System Inc COM | 0.42% | 0.32% | 0.32% |
 VMIValmont Industries, Inc. COM | 0.32% | 0.31% | 0.31% |
 SOLSSolstice Advanced Materials Inc. COM SHS | 0.51% | 0.28% | 0.28% |
 OSKOshkosh Corporation COM | 0.38% | 0.24% | 0.24% |
 ACMAECOM | 0.46% | 0.23% | 0.23% |
 IDAIdacorp Inc COM | 0.21% | 0.22% | 0.21% |
 SSDSimpson Manufacturing Co Inc. COM | 0.30% | 0.21% | 0.21% |
 AMAntero Midstream Corporation COM | 0.20% | 0.38% | 0.20% |
 EXPEagle Materials Inc. COM | 0.25% | 0.18% | 0.18% |
 TXNMTXNM Energy Inc. COM | 0.17% | 0.13% | 0.13% |
 SRSpire Inc COM | 0.14% | 0.11% | 0.11% |
 NWENorthWestern Energy Group Inc COM NEW | 0.11% | 0.10% | 0.10% |
 KNFKnife River Corp. COMMON STOCK | 0.19% | 0.08% | 0.08% |
Frequently Asked Questions
How much do IFRA and MDYG overlap?
IFRA and MDYG overlap by 8.1% of portfolio weight. They share 23 holdings (IFRA holds 162 positions and MDYG holds 245), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IFRA and MDYG?
The two portfolios are 8.1% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of IFRA and MDYG?
The largest positions held by both funds are ATI, MTZ, CRS, APG and STRL. Together the top 10 shared positions account for 68% of the total overlap.
What does IFRA own that MDYG doesn't?
139 positions (90.4% of IFRA) are unique to IFRA, led by CAT, NEE and UNP. In the other direction, 222 positions (89.1% of MDYG) are unique to MDYG.