MDY vs VXF: Holdings Overlap
MDYState Street® SPDR® S&P MIDCAP 400® ETF Trust
State Street (SPDR) · 399 holdings · $27.1B · as of 2026-08-06
VXFVanguard Extended Market Index Fund
Vanguard · 3359 holdings · $32.2B · as of 2026-03-31
Holdings snapshots are 128 days apart (MDY: 2026-08-06, VXF: 2026-03-31). 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 MDY and VXF?
State Street® SPDR® S&P MIDCAP 400® ETF Trust (MDY, by State Street (SPDR)) holds 399 positions; Vanguard Extended Market Index Fund (VXF, by Vanguard) holds 3359. They have 399 holdings in common, and by portfolio weight the two funds are 43.8% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 43.8%Sum of the smaller weight of each shared holding
- Shared Holdings
- 399MDY holds 399 · VXF holds 3359
- Weight in Shared Holdings
- MDY 105%·VXF 44%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 MDY
Every position in MDY is also held by VXF, so it brings nothing the other fund doesn’t already own.
Only in VXF
2960 of 3359 positions (56.0% of the fund) are not held by MDY. Showing the top 30 by weight.
Sector Breakdown
| Sector | MDY | VXF |
|---|---|---|
| Industrials | 25.9% | 19.5% |
| Information Technology | 15.6% | 16.3% |
| Financials | 16.0% | 15.0% |
| Health Care | 10.3% | 13.3% |
| Consumer Discretionary | 11.6% | 9.8% |
| Other Sectors | 25.7% | 23.6% |
| Unclassified | 0.0% | 2.4% |
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 (0% of MDY, 2% of VXF).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| MDY | +3.1% | +18.1% | +25.6% | +14.2% | +8.8% | +10.9% | 0.99% |
| VXF | +2.4% | +18.9% | +26.9% | +18.6% | +6.9% | +12.0% | 0.99% |
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 MDY vs VXF →
Shared Holdings(399)
The top 10 shared positions account for 7% of the overlap, led by FTI, UTHR and CW.
 FTITechnipFMC PLC USD1 | 0.76% | 0.38% | 0.38% |
|---|---|---|---|
 UTHRUnited Therapeutics Corporation COM | 0.62% | 0.35% | 0.35% |
 CWCurtiss-Wright Corporation | 0.72% | 0.34% | 0.34% |
 XPOXPO Inc COM | 0.63% | 0.31% | 0.31% |
 WWDWoodward Inc. COM | 0.60% | 0.29% | 0.29% |
 RGLDRoyal Gold, Inc. COM | 0.49% | 0.28% | 0.28% |
 USFDUS Foods Holding Corp COM | 0.64% | 0.28% | 0.28% |
 BURLBurlington Stores Inc. COM | 0.64% | 0.28% | 0.28% |
 ATIATI Inc COM | 0.83% | 0.27% | 0.27% |
 MTZMastec, Inc. COM | 0.44% | 0.27% | 0.27% |
 CRSCarpenter Technology Corporation COM | 0.76% | 0.27% | 0.27% |
 CDECoeur Mining Inc COM NEW | 0.44% | 0.27% | 0.27% |
 TWLOTwilio, Inc., Class A | 0.80% | 0.26% | 0.26% |
 NVTNVent Electric PLC COM USD0.01 | 0.72% | 0.26% | 0.26% |
 ILMNIllumina Inc COM | 0.80% | 0.26% | 0.26% |
 BWXTBWX Technologies Inc. COM | 0.42% | 0.26% | 0.26% |
 FNFabrinet COM USD0.01 | 0.53% | 0.26% | 0.26% |
 PEverpure, Inc., Class A | 0.75% | 0.25% | 0.25% |
 NXTNextpower Inc. CLASS A COM | 0.40% | 0.25% | 0.25% |
 ENTGEntegris Inc COM | 0.59% | 0.24% | 0.24% |
 RBARB Global Inc COM | 0.47% | 0.24% | 0.24% |
 RBCRBC Bearings Incorporated | 0.49% | 0.24% | 0.24% |
 AAAlcoa Corporation COM | 0.68% | 0.24% | 0.24% |
 THCTenet Healthcare Corporation COM NEW | 0.60% | 0.23% | 0.23% |
 OVVOvintiv Inc COM | 0.45% | 0.23% | 0.23% |
Showing the top 250 of 399 shared holdings by overlap weight.
Frequently Asked Questions
How much do MDY and VXF overlap?
MDY and VXF overlap by 43.8% of portfolio weight. They share 399 holdings (MDY holds 399 positions and VXF holds 3359), based on each fund's latest SEC-reported holdings.
Is it redundant to own both MDY and VXF?
The two portfolios are 43.8% identical by weight. Owning both is defensible: they share a meaningful core, but each fund adds exposure the other lacks.
What are the biggest shared holdings of MDY and VXF?
The largest positions held by both funds are FTI, UTHR, CW, XPO and WWD. Together the top 10 shared positions account for 7% of the total overlap.
What does MDY own that VXF doesn't?
Nothing. Every position in MDY is also held by VXF. In the other direction, 2960 positions (56.0% of VXF) are unique to VXF.