ETF comparison
IWY vs VO
US Large Cap Growth vs US Mid Cap.
iShares Russell Top 200 Growth ETF · Vanguard Morningstar Mid-Cap ETF
Holdings overlap
21 positions appear in both funds. Buying equal dollars of IWY and VO would leave roughly 4.5% of each dollar exposed to the same underlying securities.
Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
VO is 17 bps cheaper than IWY. On a $100,000 position that's about $170/yr more in fees for IWY.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with IWY vs VO.
Top shared holdings
21 shared in total| # | Holding | In IWY | In VO | Overlap |
|---|---|---|---|---|
| 1 | WESTERN DIGITAL CORP | 0.74% | 1.06% | 0.74% |
| 2 | VERTIV HOLDINGS COMPANY | 0.44% | 1.22% | 0.44% |
| 3 | QUANTA SERVICES INC | 0.37% | 1.04% | 0.37% |
| 4 | HOWMET AEROSPACE INC | 0.37% | 1.04% | 0.37% |
| 5 | FORTINET INC | 0.32% | 0.46% | 0.32% |
| 6 | BLOOM ENERGY CORP | 0.28% | 0.79% | 0.28% |
| 7 | HILTON WORLDWIDE HOLDINGS INC | 0.25% | 0.36% | 0.25% |
| 8 | DOORDASH INC | 0.24% | 0.66% | 0.24% |
| 9 | CIENA CORP | 0.24% | 0.67% | 0.24% |
| 10 | MONOLITHIC POWER SYSTEMS INC | 0.22% | 0.62% | 0.22% |
| 11 | ROSS STORES INC | 0.20% | 0.66% | 0.20% |
| 12 | CINTAS CORP | 0.20% | 0.28% | 0.20% |
Only in IWY
80 total- NVIDIA CORP 14.16%
- APPLE INC 7.14%
- ALPHABET INC 6.37%
- BROADCOM INC 5.64%
- ALPHABET INC 5.14%
- MICRON TECHNOLOGY INC 4.87%
- TESLA INC 4.59%
- MICROSOFT CORP 4.56%
- META PLATFORMS INC 3.68%
- ELI LILLY & COMPANY 3.35%
Only in VO
261 total- Seagate Technology Holdings PLC 1.05%
- Datadog Inc 0.83%
- Robinhood Markets Inc 0.77%
- Cloudflare Inc 0.76%
- Coherent Corp 0.75%
- Royal Caribbean Cruises Ltd 0.74%
- Teradyne Inc 0.73%
- Marathon Petroleum Corp 0.72%
- CRH PLC 0.69%
- United Rentals Inc 0.69%
Related comparisons
More comparisons with IWY
More comparisons with VO
- VO vs MGV · Vanguard Morningstar Mega Cap Value ETF 4.2%
- VO vs VB · Vanguard Morningstar Small-Cap ETF 3.5%
- VO vs CGDV · Capital Group Dividend Value ETF 3.3%
- VO vs PEY · Invesco High Yield Equity Dividend Achievers ETF 2.6%
- VO vs VBR · Vanguard Morningstar Small-Cap Value ETF 2.4%
- VO vs MGK · Vanguard Morningstar Mega Cap Growth ETF 2.3%
Percentages are holdings overlap with the named fund.
Open IWY 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 methodology and 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.