IJH vs MDYG: Holdings Overlap
IJHiShares Core S&P Mid-Cap ETF
iShares · 399 holdings · $126.1B · 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 (IJH: 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 IJH and MDYG?
iShares Core S&P Mid-Cap ETF (IJH, by iShares) holds 399 positions; State Street® SPDR® S&P 400™ Mid Cap Growth ETF (MDYG, by State Street (SPDR)) holds 245. They have 234 holdings in common, and by portfolio weight the two funds are 61.0% identical. In practical terms the pair is heavily overlapping, with largely the same stocks driving both funds.
- Overlap by Weight
- 61.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 234IJH holds 399 · MDYG holds 245
- Weight in Shared Holdings
- IJH 64%·MDYG 93%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 IJH
165 of 399 positions (35.7% of the fund) are not held by MDYG. Showing the top 30 by weight.
Sector Breakdown
| Sector | IJH | MDYG |
|---|---|---|
| Industrials | 25.3% | 29.8% |
| Information Technology | 12.3% | 20.2% |
| Health Care | 8.9% | 15.5% |
| Financials | 14.6% | 8.0% |
| Consumer Discretionary | 11.3% | 9.0% |
| Other Sectors | 27.1% | 17.3% |
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.
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IJH | +3.1% | +18.4% | +26.0% | +14.5% | +9.0% | +11.2% | 1.14% |
| 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 IJH vs MDYG →
Shared Holdings(234)
The top 10 shared positions account for 11% of the overlap, led by FTI, UTHR and CW.
 FTITechnipFMC PLC USD1 | 0.87% | 1.48% | 0.87% |
|---|---|---|---|
 UTHRUnited Therapeutics Corporation COM | 0.80% | 1.21% | 0.80% |
 CWCurtiss-Wright Corporation | 0.78% | 1.41% | 0.78% |
 XPOXPO Inc COM | 0.71% | 1.23% | 0.71% |
 WWDWoodward Inc. COM | 0.67% | 1.16% | 0.67% |
 RGLDRoyal Gold, Inc. COM | 0.64% | 0.95% | 0.64% |
 BURLBurlington Stores Inc. COM | 0.63% | 0.76% | 0.63% |
 ATIATI Inc COM | 0.62% | 1.63% | 0.62% |
 MTZMastec, Inc. COM | 0.62% | 0.85% | 0.62% |
 CRSCarpenter Technology Corporation COM | 0.61% | 1.48% | 0.61% |
 NVTNVent Electric PLC COM USD0.01 | 0.60% | 1.41% | 0.60% |
 TWLOTwilio, Inc., Class A | 0.60% | 1.56% | 0.60% |
 ILMNIllumina Inc COM | 0.59% | 0.84% | 0.59% |
 BWXTBWX Technologies Inc. COM | 0.58% | 0.81% | 0.58% |
 FNFabrinet COM USD0.01 | 0.58% | 1.04% | 0.58% |
 PEverpure, Inc., Class A | 0.58% | 1.47% | 0.58% |
 RBARB Global Inc COM | 0.56% | 0.92% | 0.56% |
 RBCRBC Bearings Incorporated | 0.54% | 0.95% | 0.54% |
 THCTenet Healthcare Corporation COM NEW | 0.52% | 1.18% | 0.52% |
 ITTITT Inc COM | 0.51% | 1.02% | 0.51% |
 NXTNextpower Inc. CLASS A COM | 0.56% | 0.51% | 0.51% |
 APGAPI Group Corp COM STK | 0.49% | 0.85% | 0.49% |
 SGISomnigroup International Inc. COM | 0.48% | 0.73% | 0.48% |
 MKSIMKS Inc. COM | 0.48% | 0.74% | 0.48% |
 ENTGEntegris Inc COM | 0.56% | 0.46% | 0.46% |
Frequently Asked Questions
How much do IJH and MDYG overlap?
IJH and MDYG overlap by 61.0% of portfolio weight. They share 234 holdings (IJH holds 399 positions and MDYG holds 245), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IJH and MDYG?
The two portfolios are 61.0% identical by weight. Owning both mostly doubles down on the shared core rather than diversifying: the same large positions drive both funds.
What are the biggest shared holdings of IJH and MDYG?
The largest positions held by both funds are FTI, UTHR, CW, XPO and WWD. Together the top 10 shared positions account for 11% of the total overlap.
What does IJH own that MDYG doesn't?
165 positions (35.7% of IJH) are unique to IJH, led by CASY, FLEX and USFD. In the other direction, 11 positions (6.4% of MDYG) are unique to MDYG.