MDYG vs VB: Holdings Overlap
MDYGState Street® SPDR® S&P 400™ Mid Cap Growth ETF
State Street (SPDR) · 245 holdings · $2.9B · as of 2026-08-06
VBVanguard Small-cap Index Fund
Vanguard · 1312 holdings · $82.5B · as of 2026-03-31
Holdings snapshots are 128 days apart (MDYG: 2026-08-06, VB: 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 MDYG and VB?
State Street® SPDR® S&P 400™ Mid Cap Growth ETF (MDYG, by State Street (SPDR)) holds 245 positions; Vanguard Small-cap Index Fund (VB, by Vanguard) holds 1312. They have 243 holdings in common, and by portfolio weight the two funds are 29.3% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 29.3%Sum of the smaller weight of each shared holding
- Shared Holdings
- 243MDYG holds 245 · VB holds 1312
- Weight in Shared Holdings
- MDYG 99%·VB 29%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 MDYG
2 of 245 positions (0.5% of the fund) are not held by VB.
ALVAutoliv Inc. COM0.28%
LIVNLivaNova PLC ORD GBP1.00 (DI)0.22%
Sector Breakdown
| Sector | MDYG | VB |
|---|---|---|
| Industrials | 29.8% | 21.2% |
| Information Technology | 20.2% | 13.8% |
| Health Care | 15.5% | 11.6% |
| Financials | 8.0% | 13.4% |
| Consumer Discretionary | 9.0% | 10.5% |
| Other Sectors | 17.3% | 28.5% |
| Unclassified | 0.0% | 0.7% |
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 MDYG, 1% of VB).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| MDYG | +3.3% | +21.6% | +28.0% | +16.0% | +8.5% | +11.3% | 0.56% |
| VB | +2.5% | +19.5% | +29.1% | +15.9% | +8.1% | +11.3% | 1.18% |
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 MDYG vs VB →
Shared Holdings(243)
The top 10 shared positions account for 11% of the overlap, led by FTI, UTHR and CW.
 FTITechnipFMC PLC USD1 | 1.48% | 0.39% | 0.39% |
|---|---|---|---|
 UTHRUnited Therapeutics Corporation COM | 1.21% | 0.36% | 0.36% |
 CWCurtiss-Wright Corporation | 1.41% | 0.35% | 0.35% |
 XPOXPO Inc COM | 1.23% | 0.30% | 0.30% |
 RGLDRoyal Gold, Inc. COM | 0.95% | 0.30% | 0.30% |
 WWDWoodward Inc. COM | 1.16% | 0.30% | 0.30% |
 MTZMastec, Inc. COM | 0.85% | 0.28% | 0.28% |
 ATIATI Inc COM | 1.63% | 0.28% | 0.28% |
 NVTNVent Electric PLC COM USD0.01 | 1.41% | 0.27% | 0.27% |
 TWLOTwilio, Inc., Class A | 1.56% | 0.27% | 0.27% |
 BWXTBWX Technologies Inc. COM | 0.81% | 0.26% | 0.26% |
 FNFabrinet COM USD0.01 | 1.04% | 0.26% | 0.26% |
 CRSCarpenter Technology Corporation COM | 1.48% | 0.26% | 0.26% |
 PEverpure, Inc., Class A | 1.47% | 0.26% | 0.26% |
 ILMNIllumina Inc COM | 0.84% | 0.25% | 0.25% |
 RBARB Global Inc COM | 0.92% | 0.25% | 0.25% |
 ENTGEntegris Inc COM | 0.46% | 0.25% | 0.25% |
 RBCRBC Bearings Incorporated | 0.95% | 0.24% | 0.24% |
 NXTNextpower Inc. CLASS A COM | 0.51% | 0.24% | 0.24% |
 THCTenet Healthcare Corporation COM NEW | 1.18% | 0.23% | 0.23% |
 ITTITT Inc COM | 1.02% | 0.23% | 0.23% |
 MKSIMKS Inc. COM | 0.74% | 0.22% | 0.22% |
 WPCW. P. Carey Inc COM | 0.45% | 0.21% | 0.21% |
 MTSIMACOM Technology Solutions Holdings Inc. COM | 1.06% | 0.21% | 0.21% |
 APGAPI Group Corp COM STK | 0.85% | 0.21% | 0.21% |
Frequently Asked Questions
How much do MDYG and VB overlap?
MDYG and VB overlap by 29.3% of portfolio weight. They share 243 holdings (MDYG holds 245 positions and VB holds 1312), based on each fund's latest SEC-reported holdings.
Is it redundant to own both MDYG and VB?
The two portfolios are 29.3% 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 MDYG and VB?
The largest positions held by both funds are FTI, UTHR, CW, XPO and RGLD. Together the top 10 shared positions account for 11% of the total overlap.
What does MDYG own that VB doesn't?
2 positions (0.5% of MDYG) are unique to MDYG, led by ALV and LIVN. In the other direction, 1069 positions (70.4% of VB) are unique to VB.