ETF comparison
SPYM vs VOO
Both US Large Cap.
State Street SPDR Portfolio S&P 500 ETF · Vanguard S&P 500 ETF
Holdings overlap
504 positions appear in both funds. Buying equal dollars of SPYM and VOO would leave roughly 99.7% 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 1 bps cheaper than VOO. On a $100,000 position that's about $10/yr more in fees for VOO.
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 SPYM vs VOO.
Top shared holdings
504 shared in total| # | Holding | In SPYM | In VOO | Overlap |
|---|---|---|---|---|
| 1 | NVIDIA Corp | 7.51% | 7.51% | 7.51% |
| 2 | Apple Inc | 6.59% | 6.59% | 6.59% |
| 3 | Microsoft Corp | 4.29% | 4.30% | 4.29% |
| 4 | Amazon.com Inc | 3.62% | 3.62% | 3.62% |
| 5 | Alphabet Inc | 3.25% | 3.25% | 3.25% |
| 6 | Broadcom Inc | 2.77% | 2.77% | 2.77% |
| 7 | Alphabet Inc | 2.59% | 2.59% | 2.59% |
| 8 | Micron Technology Inc | 2.02% | 2.02% | 2.02% |
| 9 | Meta Platforms Inc | 1.92% | 1.92% | 1.92% |
| 10 | Tesla Inc | 1.83% | 1.84% | 1.83% |
| 11 | Eli Lilly & Co | 1.47% | 1.47% | 1.47% |
| 12 | Advanced Micro Devices Inc | 1.47% | 1.47% | 1.47% |
Only in SPYM
2 total- CONTRA HOLOGIC INCORPO 0.00%
- CONTRA WALGREENS BOOTS 0.00%
Only in VOO
0 totalEvery VOO position is also held by SPYM.
Related comparisons
More comparisons with SPYM
- SPYM vs VV · Vanguard Morningstar Large-Cap ETF 96.2%
- SPYM vs BBUS · JPMorgan BetaBuilders U.S. Equity ETF 92.2%
- SPYM vs SPTM · State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF 92.1%
- SPYM vs SCHX · Schwab U.S. Large-Cap ETF 91.9%
- SPYM vs IWB · iShares Russell 1000 ETF 91.7%
- SPYM vs VONE · Vanguard Russell 1000 Index Fund ETF Shares 90.6%
More comparisons with VOO
- VOO vs IVV · iShares Core S&P 500 ETF 99.6%
- VOO vs VV · Vanguard Morningstar Large-Cap ETF 96.1%
- VOO vs SPY · State Street SPDR S&P 500 ETF Trust 92.2%
- VOO vs SPTM · State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF 92.1%
- VOO vs BBUS · JPMorgan BetaBuilders U.S. Equity ETF 92.0%
- VOO vs SCHX · Schwab U.S. Large-Cap ETF 91.9%
Percentages are holdings overlap with the named fund.
Open SPYM or VOO 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.