ETF comparison
IWRvsVO
Both US Mid Cap.
iShares Russell Mid-Cap ETF · Vanguard Morningstar Mid-Cap ETF
Holdings overlap
230 positions appear in both funds. Buying equal dollars of IWR and VO would leave roughly54.8%of each dollar exposed to the same underlying securities.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — seewhat we don't scorefor why.
Cost difference
VO is 15 bps cheaper than IWR. On a $100,000 position that's about $150/yr more in fees for IWR.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open thecost calculator pre-filled with IWR vs VO.
Top shared holdings
230 shared in total| # | Holding | In IWR | In VO | Overlap |
|---|---|---|---|---|
| 1 | Datadog, Inc. | 0.62% | 0.83% | 0.62% |
| 2 | Royal Caribbean Cruises Ltd. | 0.58% | 0.74% | 0.58% |
| 3 | Cloudflare, Inc. | 0.56% | 0.76% | 0.56% |
| 4 | Robinhood Markets, Inc. | 0.56% | 0.77% | 0.56% |
| 5 | Teradyne, Inc. | 0.55% | 0.73% | 0.55% |
| 6 | Marathon Petroleum Corp. | 0.54% | 0.72% | 0.54% |
| 7 | Simon Property Group, Inc. | 0.52% | 0.67% | 0.52% |
| 8 | United Rentals, Inc. | 0.51% | 0.69% | 0.51% |
| 9 | Coherent Corp. | 0.50% | 0.75% | 0.50% |
| 10 | Comfort Systems USA, Inc. | 0.50% | 0.67% | 0.50% |
| 11 | Phillips 66 | 0.49% | 0.66% | 0.49% |
| 12 | Warner Bros Discovery, Inc. | 0.46% | 0.61% | 0.46% |
Only in IWR
595 total- BlackRock Funds III2.61%
- Credo Technology Group Holding Ltd.0.32%
- Anglogold Ashanti plc0.29%
- Jabil, Inc.0.29%
- Natera, Inc.0.27%
- EMCOR Group, Inc.0.26%
- Revolution Medicines, Inc.0.26%
- Twilio, Inc.0.22%
- MKS, Inc.0.22%
- Carpenter Technology Corp.0.22%
Only in VO
52 total- Vertiv Holdings Co1.22%
- Western Digital Corp1.06%
- Seagate Technology Holdings PLC1.05%
- Quanta Services Inc1.04%
- Howmet Aerospace Inc1.04%
- Cummins Inc0.95%
- Bloom Energy Corp0.79%
- Constellation Energy Corp0.78%
- Valero Energy Corp0.75%
- TransDigm Group Inc0.72%
Open IWR or VO at a brokerage
Both funds trade commission-free at major US brokerages.
Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodologyand funding disclosure.
Holdings overlap is the sum of min(weight_a, weight_b) over positions matched on ISIN (CUSIP fallback). Methodology: see/methodology/.
Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.