ETF comparison
ITOT vs SPTM
Both US Total Market.
iShares Core S&P Total U.S. Stock Market ETF · State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF
Holdings overlap
1,501 positions appear in both funds. Buying equal dollars of ITOT and SPTM would leave roughly 95.3% of each dollar exposed to the same underlying securities.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
Expense ratios are effectively identical (0.030% vs 0.030%).
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 ITOT vs SPTM.
Top shared holdings
1,501 shared in total| # | Holding | In ITOT | In SPTM | Overlap |
|---|---|---|---|---|
| 1 | NVIDIA Corp. | 6.69% | 6.98% | 6.69% |
| 2 | Apple, Inc. | 5.88% | 6.13% | 5.88% |
| 3 | Microsoft Corp. | 4.34% | 4.52% | 4.34% |
| 4 | Amazon.com, Inc. | 3.21% | 3.35% | 3.21% |
| 5 | Alphabet, Inc. | 2.64% | 2.75% | 2.64% |
| 6 | Broadcom, Inc. | 2.32% | 2.42% | 2.32% |
| 7 | Alphabet, Inc. | 2.12% | 2.21% | 2.12% |
| 8 | Meta Platforms, Inc. | 1.98% | 2.06% | 1.98% |
| 9 | Tesla, Inc. | 1.65% | 1.72% | 1.65% |
| 10 | Berkshire Hathaway, Inc. | 1.39% | 1.45% | 1.39% |
| 11 | JPMorgan Chase & Co. | 1.25% | 1.31% | 1.25% |
| 12 | Eli Lilly & Co. | 1.15% | 1.20% | 1.15% |
Only in ITOT
989 total- BlackRock Funds III 1.15%
- BlackRock Funds III 0.19%
- Marvell Technology, Inc. 0.14%
- Cloudflare, Inc. 0.10%
- Cheniere Energy, Inc. 0.10%
- Snowflake, Inc. 0.08%
- Ferguson Enterprises, Inc. 0.07%
- Alnylam Pharmaceuticals, Inc. 0.07%
- Strategy, Inc. 0.06%
- ROBLOX Corp. 0.06%
Only in SPTM
7 total- State Street Global Advisors 0.02%
- Corebridge Financial Inc 0.01%
- Pitney Bowes Inc 0.00%
- Preferred Bank/Los Angeles CA 0.00%
- Central Pacific Financial Corp 0.00%
- Hanmi Financial Corp 0.00%
- Central Garden & Pet Co 0.00%
Open ITOT or SPTM 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.