IWN vs VIOO: Holdings Overlap
IWNiShares Russell 2000 Value ETF
iShares · 1406 holdings · $14.7B · as of 2026-03-31
VIOOVanguard S&P Small-cap 600 Index Fund
Vanguard · 603 holdings · $4.4B · as of 2026-05-31
Holdings snapshots are 61 days apart (IWN: 2026-03-31, VIOO: 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 IWN and VIOO?
iShares Russell 2000 Value ETF (IWN, by iShares) holds 1406 positions; Vanguard S&P Small-cap 600 Index Fund (VIOO, by Vanguard) holds 603. They have 392 holdings in common, and by portfolio weight the two funds are 41.7% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 41.7%Sum of the smaller weight of each shared holding
- Shared Holdings
- 392IWN holds 1406 · VIOO holds 603
- Weight in Shared Holdings
- IWN 45%·VIOO 56%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 IWN
1014 of 1406 positions (54.4% of the fund) are not held by VIOO. Showing the top 30 by weight.
Sector Breakdown
| Sector | IWN | VIOO |
|---|---|---|
| Financials | 22.4% | 17.6% |
| Industrials | 11.9% | 17.2% |
| Information Technology | 8.0% | 15.9% |
| Consumer Discretionary | 8.7% | 12.9% |
| Health Care | 10.0% | 11.0% |
| Other Sectors | 31.6% | 25.2% |
| Unclassified | 7.1% | 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 (7% of IWN, 0% of VIOO).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IWN | +2.4% | +25.3% | +42.6% | +16.8% | +9.0% | +10.2% | 1.41% |
| VIOO | +2.4% | +24.4% | +36.3% | +14.6% | +7.7% | +10.9% | 1.09% |
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 IWN vs VIOO →
Shared Holdings(392)
The top 10 shared positions account for 9% of the overlap, led by JXN, SM and TRNO.
 JXNJackson Financial, Inc., Class A | 0.50% | 0.43% | 0.43% |
|---|---|---|---|
 SMSM Energy Co. COM | 0.54% | 0.41% | 0.41% |
 TRNOTerreno Realty Corporation COM | 0.43% | 0.40% | 0.40% |
 VSATViaSat, Inc. COM | 0.39% | 0.64% | 0.39% |
 EPRTEssential Properties Realty Trust Inc. COM | 0.42% | 0.38% | 0.38% |
 NENoble Corporation PLC ORD SHS A | 0.43% | 0.34% | 0.34% |
 MACThe Macerich Company COM | 0.34% | 0.36% | 0.34% |
 MATXMatson Inc COM | 0.35% | 0.33% | 0.33% |
 ABCBAmeris Bancorp COM | 0.35% | 0.32% | 0.32% |
 NPOEnpro Inc COM | 0.32% | 0.38% | 0.32% |
 AUBAtlantic Union Bankshares Corp COM | 0.35% | 0.31% | 0.31% |
 HASIHannon Armstrong Sustainable Infrastructure Capital, Inc. | 0.32% | 0.31% | 0.31% |
 HCCWarrior Met Coal Inc COM | 0.33% | 0.29% | 0.29% |
 MGYMagnolia Oil & Gas Corporation CL A | 0.31% | 0.29% | 0.29% |
 AXAxos Financial Inc COM | 0.28% | 0.29% | 0.28% |
 LBRTLiberty Energy, Inc., Class A | 0.31% | 0.28% | 0.28% |
 CRCCalifornia Resources Corporation COM STOCK | 0.35% | 0.27% | 0.27% |
 RDNRadian Group Inc. COM | 0.31% | 0.27% | 0.27% |
 PECOPhillips Edison & Co Inc COMMON STOCK | 0.27% | 0.30% | 0.27% |
 SANMSanmina Corporation | 0.26% | 0.83% | 0.26% |
 MTHMeritage Homes Corp COM | 0.29% | 0.26% | 0.26% |
 ACAArcosa Inc COM | 0.26% | 0.37% | 0.26% |
 REZIResideo Technologies Inc COM | 0.30% | 0.25% | 0.25% |
 FULTFulton Financial Corporation COM | 0.26% | 0.24% | 0.24% |
 CNRCore Natural Resources Inc. COM SHS | 0.24% | 0.27% | 0.24% |
Showing the top 250 of 392 shared holdings by overlap weight.
Frequently Asked Questions
How much do IWN and VIOO overlap?
IWN and VIOO overlap by 41.7% of portfolio weight. They share 392 holdings (IWN holds 1406 positions and VIOO holds 603), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IWN and VIOO?
The two portfolios are 41.7% 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 IWN and VIOO?
The largest positions held by both funds are JXN, SM, TRNO, VSAT and EPRT. Together the top 10 shared positions account for 9% of the total overlap.
What does IWN own that VIOO doesn't?
1014 positions (54.4% of IWN) are unique to IWN, led by ECHO, TTMI and CDE. In the other direction, 211 positions (44.2% of VIOO) are unique to VIOO.