IGV vs MDYG: Holdings Overlap
IGViShares Expanded Tech-Software Sector ETF
iShares · 112 holdings · $14.7B · 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 (IGV: 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 IGV and MDYG?
iShares Expanded Tech-Software Sector ETF (IGV, by iShares) holds 112 positions; State Street® SPDR® S&P 400™ Mid Cap Growth ETF (MDYG, by State Street (SPDR)) holds 245. They have 15 holdings in common, and by portfolio weight the two funds are 3.8% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 3.8%Sum of the smaller weight of each shared holding
- Shared Holdings
- 15IGV holds 112 · MDYG holds 245
- Weight in Shared Holdings
- IGV 4%·MDYG 5%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 IGV
97 of 112 positions (95.9% of the fund) are not held by MDYG. Showing the top 30 by weight.
Sector Breakdown
| Sector | IGV | MDYG |
|---|---|---|
| Information Technology | 90.6% | 20.2% |
| Industrials | 0.2% | 29.8% |
| Health Care | 0.0% | 15.5% |
| Consumer Discretionary | 0.2% | 9.0% |
| Communication Services | 8.2% | 2.3% |
| Other Sectors | 0.2% | 23.0% |
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.
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IGV | +9.1% | -2.8% | -6.3% | +13.8% | +4.6% | +16.7% | 0.02% |
| 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 IGV vs MDYG →
Shared Holdings(15)
The top 10 shared positions account for 84% of the overlap, led by GWRE, DT and NTNX.
 GWREGuidewire Software Inc COM | 0.54% | 0.72% | 0.54% |
|---|---|---|---|
 DTDynatrace Inc COM NEW | 0.47% | 0.77% | 0.47% |
 NTNXNutanix, Inc., Class A | 0.44% | 0.51% | 0.44% |
 DOCUDocusign, Inc., Class A | 0.41% | 0.35% | 0.35% |
 MANHManhattan Associates Inc COM | 0.34% | 0.37% | 0.34% |
 IDCCInterDigital, Inc. COM | 0.33% | 0.45% | 0.33% |
 PATHUiPath, Inc., Class A | 0.20% | 0.24% | 0.20% |
 BSYBentley Systems Incorporated COM CL B | 0.22% | 0.18% | 0.18% |
 DBXDropbox, Inc., Class A | 0.17% | 0.28% | 0.17% |
 APPFAppfolio, Inc., Class A | 0.16% | 0.25% | 0.16% |
 PEGAPegasystems Inc COM | 0.17% | 0.15% | 0.15% |
 CVLTCommvault Systems Inc. COM | 0.15% | 0.18% | 0.15% |
 QLYSQualys Inc COM | 0.13% | 0.34% | 0.13% |
 BILLBILL Holdings Inc COM | 0.14% | 0.11% | 0.11% |
 DLBDolby Laboratories, Inc., Class A | 0.16% | 0.09% | 0.09% |
Frequently Asked Questions
How much do IGV and MDYG overlap?
IGV and MDYG overlap by 3.8% of portfolio weight. They share 15 holdings (IGV holds 112 positions and MDYG holds 245), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IGV and MDYG?
The two portfolios are 3.8% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of IGV and MDYG?
The largest positions held by both funds are GWRE, DT, NTNX, DOCU and MANH. Together the top 10 shared positions account for 84% of the total overlap.
What does IGV own that MDYG doesn't?
97 positions (95.9% of IGV) are unique to IGV, led by PLTR, MSFT and ORCL. In the other direction, 230 positions (94.9% of MDYG) are unique to MDYG.