IWM vs MDYV: Holdings Overlap
iShares · 1941 holdings · $82.2B · as of 2026-03-31
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 128 days apart (IWM: 2026-03-31, 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 IWM and MDYV?
iShares Russell 2000 ETF (IWM, by iShares) holds 1941 positions; State Street® SPDR® S&P 400™ Mid Cap Value ETF (MDYV, by State Street (SPDR)) holds 297. They have 59 holdings in common, and by portfolio weight the two funds are 9.3% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 9.3%Sum of the smaller weight of each shared holding
- Shared Holdings
- 59IWM holds 1941 · MDYV holds 297
- Weight in Shared Holdings
- IWM 10%·MDYV 14%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 IWM
1882 of 1941 positions (89.5% of the fund) are not held by MDYV. Showing the top 30 by weight.
Only in MDYV
238 of 297 positions (85.9% of the fund) are not held by IWM. Showing the top 30 by weight.
Sector Breakdown
| Sector | IWM | MDYV |
|---|---|---|
| Financials | 15.3% | 23.4% |
| Industrials | 17.9% | 18.7% |
| Health Care | 16.6% | 4.1% |
| Information Technology | 13.6% | 8.3% |
| Consumer Discretionary | 8.0% | 12.5% |
| Other Sectors | 22.7% | 32.9% |
| Unclassified | 5.5% | 0.0% |
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. “Unclassified” is weight we could not classify (5% of IWM, 0% of MDYV).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IWM | +1.8% | +23.0% | +38.6% | +17.1% | +7.5% | +10.8% | 0.88% |
| 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 IWM vs MDYV →
Shared Holdings(59)
The top 10 shared positions account for 26% of the overlap, led by NXT, UMBF and CYTK.
 NXTNextpower Inc. CLASS A COM | 0.60% | 0.29% | 0.29% |
|---|---|---|---|
 UMBFUMB Financial Corporation | 0.28% | 0.59% | 0.28% |
 CYTKCytokinetics Incorporated | 0.27% | 0.29% | 0.27% |
 ONBOld National Bancorp COM | 0.26% | 0.52% | 0.26% |
 FLRFluor Corporation COM | 0.26% | 0.39% | 0.26% |
 AHRAmerican Healthcare REIT Inc. COM SHS | 0.29% | 0.23% | 0.23% |
 CMCCommercial Metals Company COM | 0.23% | 0.46% | 0.23% |
 TEXTerex Corporation COM | 0.23% | 0.42% | 0.23% |
 SMTCSemtech Corporation COM | 0.24% | 0.21% | 0.21% |
 VLYValley National Bancorp. COM | 0.20% | 0.39% | 0.20% |
 PORPortland General Electric Company COM NEW | 0.20% | 0.32% | 0.20% |
 SWXSouthwest Gas Holdings Inc COM | 0.20% | 0.34% | 0.20% |
 UBSIUnited Bankshares Inc COM | 0.20% | 0.38% | 0.20% |
 GBCIGlacier Bancorp Inc. COM | 0.19% | 0.35% | 0.19% |
 SLABSilicon Laboratories, Inc. COM | 0.23% | 0.19% | 0.19% |
 TXNMTXNM Energy Inc. COM | 0.20% | 0.19% | 0.19% |
 MURMurphy Oil Corporation COM | 0.19% | 0.25% | 0.19% |
 NJRNew Jersey Resources Corporation | 0.19% | 0.31% | 0.19% |
 ESNTEssent Group Ltd. COM USD0.015 | 0.18% | 0.20% | 0.18% |
 HWCHancock Whitney Corporation COM | 0.18% | 0.36% | 0.18% |
 KRGKite Realty Group Trust COM NEW | 0.18% | 0.31% | 0.18% |
 UFPIUFP Industries Inc COM | 0.18% | 0.29% | 0.18% |
 CNXCNX Resources Corporation COM | 0.18% | 0.28% | 0.18% |
 BKHBlack Hills Corporation COM | 0.18% | 0.31% | 0.18% |
 OGSONE Gas, Inc. COM | 0.18% | 0.28% | 0.18% |
Frequently Asked Questions
How much do IWM and MDYV overlap?
IWM and MDYV overlap by 9.3% of portfolio weight. They share 59 holdings (IWM holds 1941 positions and MDYV holds 297), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IWM and MDYV?
The two portfolios are 9.3% 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 IWM and MDYV?
The largest positions held by both funds are NXT, UMBF, CYTK, ONB and FLR. Together the top 10 shared positions account for 26% of the total overlap.
What does IWM own that MDYV doesn't?
1882 positions (89.5% of IWM) are unique to IWM, led by BE, CDE and FN. In the other direction, 238 positions (85.9% of MDYV) are unique to MDYV.