ETF comparison
SPTM vs SPY
US Total Market vs US Large Cap.
State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF · State Street SPDR S&P 500 ETF Trust
Holdings overlap
470 positions appear in both funds. Buying equal dollars of SPTM and SPY would leave roughly 85.8% 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
SPTM is 6 bps cheaper than SPY. On a $100,000 position that's about $64/yr more in fees for SPY.
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 SPTM vs SPY.
Top shared holdings
470 shared in total| # | Holding | In SPTM | In SPY | Overlap |
|---|---|---|---|---|
| 1 | NVIDIA Corp | 6.92% | 8.50% | 6.92% |
| 2 | Apple Inc | 6.07% | 7.32% | 6.07% |
| 3 | Microsoft Corp | 3.96% | 5.77% | 3.96% |
| 4 | Amazon.com Inc | 3.33% | 3.71% | 3.33% |
| 5 | Alphabet Inc | 2.99% | 3.03% | 2.99% |
| 6 | Broadcom Inc | 2.56% | 2.54% | 2.54% |
| 7 | Alphabet Inc | 2.38% | 2.43% | 2.38% |
| 8 | Micron Technology Inc | 1.86% | 1.82% | 1.82% |
| 9 | Meta Platforms Inc | 1.76% | 2.41% | 1.76% |
| 10 | Tesla Inc | 1.69% | 1.57% | 1.57% |
| 11 | Eli Lilly & Co | 1.35% | 1.37% | 1.35% |
| 12 | Advanced Micro Devices Inc | 1.35% | 1.55% | 1.35% |
Only in SPTM
1,038 total- Exxon Mobil Corp 0.81%
- Linde PLC 0.34%
- Seagate Technology Holdings PLC 0.31%
- Eaton Corp PLC 0.24%
- Chubb Ltd 0.18%
- Trane Technologies PLC 0.16%
- Medtronic PLC 0.15%
- Johnson Controls International plc 0.13%
- Royal Caribbean Cruises Ltd 0.12%
- Accenture PLC 0.11%
Only in SPY
35 total- EXXONMOBIL HOLDINGS CORP 1.01%
- LINDE PLC 0.33%
- SEAGATE TECHNOLOGY HOLDINGS 0.29%
- EATON CORP PLC 0.25%
- ACCENTURE PLC CL A 0.18%
- CHUBB LTD 0.17%
- MEDTRONIC PLC 0.17%
- TRANE TECHNOLOGIES PLC 0.15%
- JOHNSON CONTROLS INTERNATION 0.14%
- BLOOM ENERGY CORP A 0.13%
Related comparisons
More comparisons with SPTM
- SPTM vs ESGV · Vanguard ESG U.S. Stock ETF 80.1%
- SPTM vs AVUS · Avantis US Equity ETF 74.7%
- SPTM vs ESGU · iShares ESG Aware MSCI USA ETF 73.5%
- SPTM vs DFAC · U.S. Core Equity 2 Portfolio-ETF Class Shares 71.0%
- SPTM vs IWD · iShares Russell 1000 Value ETF 57.9%
- SPTM vs IWF · iShares Russell 1000 Growth ETF 54.8%
More comparisons with SPY
- SPY vs VTHR · Vanguard Russell 3000 Index Fund ETF Shares 85.7%
- SPY vs VTI · Vanguard Morningstar Total Stock Market ETF 85.4%
- SPY vs SCHB · Schwab U.S. Broad Market ETF 84.0%
- SPY vs IWV · iShares Russell 3000 ETF 83.2%
- SPY vs ITOT · iShares Core S&P Total U.S. Stock Market ETF 83.2%
- SPY vs DFAU · Dimensional US Core Equity Market ETF 82.7%
Percentages are holdings overlap with the named fund.
Open SPTM or SPY 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.