IWR vs VIOV: Holdings Overlap
IWRiShares Russell Mid-Cap ETF
iShares · 806 holdings · $57.6B · as of 2026-03-31
VIOVVanguard S&P Small-cap 600 Value Index Fund
Vanguard · 460 holdings · $1.9B · as of 2026-05-31
Holdings snapshots are 61 days apart (IWR: 2026-03-31, VIOV: 2026-05-31). 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 IWR and VIOV?
iShares Russell Mid-Cap ETF (IWR, by iShares) holds 806 positions; Vanguard S&P Small-cap 600 Value Index Fund (VIOV, by Vanguard) holds 460. They have 56 holdings in common, and by portfolio weight the two funds are 1.6% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 1.6%Sum of the smaller weight of each shared holding
- Shared Holdings
- 56IWR holds 806 · VIOV holds 460
- Weight in Shared Holdings
- IWR 2%·VIOV 21%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 IWR
750 of 806 positions (98.1% of the fund) are not held by VIOV. Showing the top 30 by weight.
Only in VIOV
404 of 460 positions (78.8% of the fund) are not held by IWR. Showing the top 30 by weight.
Sector Breakdown
| Sector | IWR | VIOV |
|---|---|---|
| Financials | 13.6% | 21.0% |
| Industrials | 18.7% | 12.6% |
| Consumer Discretionary | 10.8% | 14.9% |
| Information Technology | 13.0% | 13.3% |
| Health Care | 9.2% | 7.4% |
| Other Sectors | 34.3% | 30.3% |
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 |
|---|---|---|---|---|---|---|---|
| IWR | +2.9% | +18.1% | +23.0% | +16.4% | +8.5% | +11.6% | 1.12% |
| VIOV | +3.7% | +23.2% | +39.7% | +13.8% | +8.4% | +10.4% | 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 IWR vs VIOV →
Shared Holdings(56)
The top 10 shared positions account for 35% of the overlap, led by EMN, ESI and LKQ.
 EMNEastman Chemical Company COM | 0.07% | 1.01% | 0.07% |
|---|---|---|---|
 ESIElement Solutions Inc COM | 0.06% | 0.56% | 0.06% |
 LKQLKQ Corporation COM | 0.06% | 0.81% | 0.06% |
 MTCHMatch Group Inc COM | 0.06% | 0.99% | 0.06% |
 CECelanese Corporation COM | 0.06% | 0.48% | 0.06% |
 MOHMolina Healthcare, Inc. COM | 0.05% | 1.04% | 0.05% |
 QRVOQorvo Inc COM | 0.05% | 0.38% | 0.05% |
 PAYCPaycom Software Inc COM | 0.05% | 0.80% | 0.05% |
 KMXCarmax Inc COM | 0.05% | 0.74% | 0.05% |
| Gates Industrial Corp PLC COM USD0.01 | 0.05% | 0.35% | 0.05% |
 LWLamb Weston Holdings Inc COM | 0.05% | 0.70% | 0.05% |
 MKTXMarketAxess Holdings Inc. COM | 0.04% | 0.26% | 0.04% |
 CZRCaesars Entertainment Inc. COM | 0.04% | 0.69% | 0.04% |
 TFXTeleflex Incorporated COM | 0.04% | 0.66% | 0.04% |
 RITMRithm Capital Corp. COM NEW | 0.04% | 0.60% | 0.04% |
 MHKMohawk Industries, Inc. COM | 0.04% | 0.65% | 0.04% |
 ENPHEnphase Energy Inc COM | 0.04% | 1.04% | 0.04% |
 RALRalliant Corp. COM | 0.04% | 0.39% | 0.04% |
 BFAMBright Horizons Family Solutions Inc Del COM | 0.04% | 0.14% | 0.04% |
 LNCLincoln National Corp. COM | 0.04% | 0.70% | 0.04% |
 MRPMillrose Properties, Inc., Class A | 0.03% | 0.21% | 0.03% |
 MDUMDU Resources Group, Inc. COM | 0.03% | 0.50% | 0.03% |
 AMTMAmentum Holdings, Inc. COM | 0.03% | 0.42% | 0.03% |
 AGOAssured Guaranty Ltd. COM USD0.01 | 0.03% | 0.18% | 0.03% |
 ADTADT Inc COM | 0.03% | 0.31% | 0.03% |
Frequently Asked Questions
How much do IWR and VIOV overlap?
IWR and VIOV overlap by 1.6% of portfolio weight. They share 56 holdings (IWR holds 806 positions and VIOV holds 460), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IWR and VIOV?
The two portfolios are 1.6% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of IWR and VIOV?
The largest positions held by both funds are EMN, ESI, LKQ, MTCH and CE. Together the top 10 shared positions account for 35% of the total overlap.
What does IWR own that VIOV doesn't?
750 positions (98.1% of IWR) are unique to IWR, led by GLW, VRT and HWM. In the other direction, 404 positions (78.8% of VIOV) are unique to VIOV.