IVOO vs MDYV: Holdings Overlap
IVOOVanguard S&P Mid-cap 400 Index Fund
Vanguard · 400 holdings · $3.9B · as of 2026-05-31
MDYVState Street® SPDR® S&P 400™ Mid Cap Value ETF
State Street (SPDR) · 297 holdings · $2.9B · as of 2026-08-06
Holdings snapshots are 67 days apart (IVOO: 2026-05-31, MDYV: 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 IVOO and MDYV?
Vanguard S&P Mid-cap 400 Index Fund (IVOO, by Vanguard) holds 400 positions; State Street® SPDR® S&P 400™ Mid Cap Value ETF (MDYV, by State Street (SPDR)) holds 297. They have 293 holdings in common, and by portfolio weight the two funds are 61.3% identical. In practical terms the pair is heavily overlapping, with largely the same stocks driving both funds.
- Overlap by Weight
- 61.3%Sum of the smaller weight of each shared holding
- Shared Holdings
- 293IVOO holds 400 · MDYV holds 297
- Weight in Shared Holdings
- IVOO 65%·MDYV 98%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 IVOO
107 of 400 positions (35.0% of the fund) are not held by MDYV. Showing the top 30 by weight.
Sector Breakdown
| Sector | IVOO | MDYV |
|---|---|---|
| Industrials | 25.6% | 18.7% |
| Financials | 14.3% | 23.4% |
| Information Technology | 15.7% | 8.3% |
| Consumer Discretionary | 11.1% | 12.5% |
| Health Care | 8.7% | 4.1% |
| Other Sectors | 24.4% | 32.9% |
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.
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IVOO | +3.1% | +18.5% | +26.0% | +14.6% | +9.0% | +11.2% | 1.14% |
| MDYV | +3.1% | +15.2% | +23.9% | +12.9% | +9.2% | +10.6% | 1.64% |
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 IVOO vs MDYV →
Shared Holdings(293)
The top 10 shared positions account for 9% of the overlap, led by ILMN, ENTG and AA.
 ILMNIllumina Inc COM | 0.71% | 0.77% | 0.71% |
|---|---|---|---|
 ENTGEntegris Inc COM | 0.60% | 0.74% | 0.60% |
 AAAlcoa Corporation COM | 0.57% | 0.71% | 0.57% |
 RSReliance Inc COM | 0.57% | 1.21% | 0.57% |
 SNXTD SYNNEX Corporation | 0.56% | 1.10% | 0.56% |
 BURLBurlington Stores Inc. COM | 0.57% | 0.52% | 0.52% |
 USFDUS Foods Holding Corp COM | 0.51% | 1.34% | 0.51% |
 WCCWesco International, Inc. COM | 0.50% | 1.03% | 0.50% |
 EWBCEast West Bancorp Inc COM | 0.48% | 0.50% | 0.48% |
 NLYAnnaly Capital Management, Inc. COM NEW | 0.45% | 0.94% | 0.45% |
 OVVOvintiv Inc COM | 0.44% | 0.94% | 0.44% |
 PFGCPerformance Food Group Co. COM | 0.44% | 1.02% | 0.44% |
 DKSDick's Sporting Goods, Inc. COM | 0.43% | 0.45% | 0.43% |
 WPCW. P. Carey Inc COM | 0.46% | 0.43% | 0.43% |
 BWABorgWarner Inc. COM | 0.42% | 0.77% | 0.42% |
 PNFPPinnacle Financial Partners Inc. COM | 0.42% | 0.90% | 0.42% |
 LSCCLattice Semiconductor Corporation COM | 0.57% | 0.41% | 0.41% |
 PRPermian Resources Corporation Class A | 0.41% | 0.91% | 0.41% |
 CLHClean Harbors, Inc. COM | 0.40% | 0.42% | 0.40% |
 CSLCarlisle Companies Incorporated | 0.40% | 0.50% | 0.40% |
 ARMKAramark COM | 0.40% | 0.84% | 0.40% |
 RPMRPM International Inc. COM | 0.39% | 0.49% | 0.39% |
 RRXRegal Rexnord Corporation COM | 0.38% | 0.68% | 0.38% |
 JLLJones Lang LaSalle Incorporated COM | 0.38% | 0.96% | 0.38% |
 GLPIGaming and Leisure Properties Inc COM | 0.38% | 0.39% | 0.38% |
Showing the top 250 of 293 shared holdings by overlap weight.
Frequently Asked Questions
How much do IVOO and MDYV overlap?
IVOO and MDYV overlap by 61.3% of portfolio weight. They share 293 holdings (IVOO holds 400 positions and MDYV holds 297), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IVOO and MDYV?
The two portfolios are 61.3% 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 IVOO and MDYV?
The largest positions held by both funds are ILMN, ENTG, AA, RS and SNX. Together the top 10 shared positions account for 9% of the total overlap.
What does IVOO own that MDYV doesn't?
107 positions (35.0% of IVOO) are unique to IVOO, led by FLEX, TWLO and FTI. In the other direction, 4 positions (1.4% of MDYV) are unique to MDYV.