MDYG vs VBK: Holdings Overlap
MDYGState Street® SPDR® S&P 400™ Mid Cap Growth ETF
State Street (SPDR) · 245 holdings · $2.9B · as of 2026-08-06
VBKVanguard Small-cap Growth Index Fund
Vanguard · 551 holdings · $24.3B · as of 2026-03-31
Holdings snapshots are 128 days apart (MDYG: 2026-08-06, VBK: 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 VBK?
State Street® SPDR® S&P 400™ Mid Cap Growth ETF (MDYG, by State Street (SPDR)) holds 245 positions; Vanguard Small-cap Growth Index Fund (VBK, by Vanguard) holds 551. They have 140 holdings in common, and by portfolio weight the two funds are 39.5% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 39.5%Sum of the smaller weight of each shared holding
- Shared Holdings
- 140MDYG holds 245 · VBK holds 551
- Weight in Shared Holdings
- MDYG 67%·VBK 41%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
105 of 245 positions (32.9% of the fund) are not held by VBK. Showing the top 30 by weight.
Only in VBK
411 of 551 positions (59.0% of the fund) are not held by MDYG. Showing the top 30 by weight.
Sector Breakdown
| Sector | MDYG | VBK |
|---|---|---|
| Industrials | 29.8% | 24.6% |
| Information Technology | 20.2% | 21.6% |
| Health Care | 15.5% | 16.1% |
| Consumer Discretionary | 9.0% | 9.9% |
| Financials | 8.0% | 6.1% |
| Other Sectors | 17.3% | 20.6% |
| Unclassified | 0.0% | 0.9% |
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 VBK).
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% |
| VBK | +1.8% | +19.6% | +29.4% | +16.6% | +5.3% | +11.4% | 0.42% |
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 VBK →
Shared Holdings(140)
The top 10 shared positions account for 18% of the overlap, led by FTI, CW and RGLD.
 FTITechnipFMC PLC USD1 | 1.48% | 0.92% | 0.92% |
|---|---|---|---|
 CWCurtiss-Wright Corporation | 1.41% | 0.84% | 0.84% |
 RGLDRoyal Gold, Inc. COM | 0.95% | 0.72% | 0.72% |
 WWDWoodward Inc. COM | 1.16% | 0.71% | 0.71% |
 MTZMastec, Inc. COM | 0.85% | 0.68% | 0.68% |
 ATIATI Inc COM | 1.63% | 0.66% | 0.66% |
 NVTNVent Electric PLC COM USD0.01 | 1.41% | 0.64% | 0.64% |
 TWLOTwilio, Inc., Class A | 1.56% | 0.64% | 0.64% |
 BWXTBWX Technologies Inc. COM | 0.81% | 0.62% | 0.62% |
 FNFabrinet COM USD0.01 | 1.04% | 0.62% | 0.62% |
 CRSCarpenter Technology Corporation COM | 1.48% | 0.62% | 0.62% |
 PEverpure, Inc., Class A | 1.47% | 0.62% | 0.62% |
 RBARB Global Inc COM | 0.92% | 0.59% | 0.59% |
 RBCRBC Bearings Incorporated | 0.95% | 0.57% | 0.57% |
 NXTNextpower Inc. CLASS A COM | 0.51% | 0.57% | 0.51% |
 MTSIMACOM Technology Solutions Holdings Inc. COM | 1.06% | 0.50% | 0.50% |
 TLNTalen Energy Corporation COM | 0.82% | 0.49% | 0.49% |
 ENTGEntegris Inc COM | 0.46% | 0.59% | 0.46% |
 LECOLincoln Electric Holdings Inc. COM | 0.55% | 0.46% | 0.46% |
 OKTAOkta Inc. Class A | 1.28% | 0.44% | 0.44% |
 NBIXNeurocrine Biosciences Inc COM | 0.86% | 0.44% | 0.44% |
 TOSTToast, Inc., Class A | 0.87% | 0.44% | 0.44% |
 KTOSKratos Defense & Security Solutions, Inc. COM NEW | 0.57% | 0.43% | 0.43% |
 ROIVRoivant Sciences Ltd SHS | 0.49% | 0.43% | 0.43% |
 GWREGuidewire Software Inc COM | 0.72% | 0.42% | 0.42% |
Frequently Asked Questions
How much do MDYG and VBK overlap?
MDYG and VBK overlap by 39.5% of portfolio weight. They share 140 holdings (MDYG holds 245 positions and VBK holds 551), based on each fund's latest SEC-reported holdings.
Is it redundant to own both MDYG and VBK?
The two portfolios are 39.5% 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 MDYG and VBK?
The largest positions held by both funds are FTI, CW, RGLD, WWD and MTZ. Together the top 10 shared positions account for 18% of the total overlap.
What does MDYG own that VBK doesn't?
105 positions (32.9% of MDYG) are unique to MDYG, led by UTHR, THC and ITT. In the other direction, 411 positions (59.0% of VBK) are unique to VBK.