ETF comparison
IVOO vs SPYM
US Mid Cap vs US Large Cap.
Vanguard S&P Mid-Cap 400 Index Fund ETF Shares · State Street SPDR Portfolio S&P 500 ETF
Holdings overlap
1 positions appear in both funds. Buying equal dollars of IVOO and SPYM would leave roughly 0.1% 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
SPYM is 5 bps cheaper than IVOO. On a $100,000 position that's about $50/yr more in fees for IVOO.
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 IVOO vs SPYM.
Top shared holdings
1 shared in total| # | Holding | In IVOO | In SPYM | Overlap |
|---|---|---|---|---|
| 1 | Flex Ltd | 1.58% | 0.09% | 0.09% |
Only in IVOO
399 total- Twilio Inc 0.82%
- TechnipFMC PLC 0.79%
- Curtiss-Wright Corp 0.79%
- nVent Electric PLC 0.77%
- Sterling Infrastructure Inc 0.75%
- XPO Inc 0.72%
- Everpure Inc 0.71%
- Illumina Inc 0.71%
- United Therapeutics Corp 0.68%
- ATI Inc 0.68%
Only in SPYM
505 total- NVIDIA Corp 7.51%
- Apple Inc 6.59%
- Microsoft Corp 4.29%
- Amazon.com Inc 3.62%
- Alphabet Inc 3.25%
- Broadcom Inc 2.77%
- Alphabet Inc 2.59%
- Micron Technology Inc 2.02%
- Meta Platforms Inc 1.92%
- Tesla Inc 1.83%
Related comparisons
More comparisons with IVOO
- IVOO vs IJR · iShares Core S&P Small-Cap ETF 0.1%
- IVOO vs QQQ · Invesco QQQ Trust 0.0%
- IVOO vs VTV · Vanguard Morningstar Value ETF 0.0%
- IVOO vs SPMD · State Street SPDR Portfolio S&P 400 Mid Cap ETF 93.8%
- IVOO vs IJH · iShares Core S&P Mid-Cap ETF 93.8%
- IVOO vs MDY · State Street SPDR S&P MIDCAP 400 ETF Trust 87.1%
More comparisons with SPYM
- SPYM vs VTWO · Vanguard Russell 2000 Index Fund ETF Shares 0.0%
- SPYM vs AVUV · Avantis US Small Cap Value ETF 0.0%
- SPYM vs BBSC · JPMorgan BetaBuilders U.S. Small Cap Equity ETF 0.0%
- SPYM vs DEM · WisdomTree Emerging Markets High Dividend Fund 0.0%
- SPYM vs DGS · WisdomTree Emerging Markets SmallCap Dividend Fund 0.0%
- SPYM vs DVYE · iShares Emerging Markets Dividend ETF 0.0%
Percentages are holdings overlap with the named fund.
Open IVOO or SPYM 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.