SPTM vs VTI overlap - what they share and where they differ
SPTM and VTI share 94.9% of their weight across 1,474 common positions, read from what each fund reported to the SEC.
Each week Ploutos reads the reported positions of the largest US equity ETFs and measures, pair by pair, the weight they share: for every stock both funds hold, the smaller of the two weights counts. Two funds tracking the same index land near 100%. A sector fund inside a broad index fund lands at roughly that sector's weight.
SPTM and VTI
94.9%
1,474 shared positions
SPTM
State Street(R) SPDR(R) Portfolio S&P 1500(R) Composite Stock Market ETF
Reported positions cover 100% of the fund, 1,490 positions · Jun 30, 2026
Top 10: 34.9%·Holdings of SPTM
VTI
VANGUARD TOTAL STOCK MARKET INDEX FUND
Reported positions cover 100% of the fund, 3,148 positions · Jun 30, 2026
Top 10: 33.4%·Holdings of VTI
Reported positions cover SPTM 100%, VTI 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
VTI vs SPTM side by side
SPTMState Street(R) SPDR(R) Portfolio S&P 1500(R) Composite Stock Market ETF
1,490
stock positions reported to the SEC
0.3% of its weight is in 16 names VTI does not hold
VTIVANGUARD TOTAL STOCK MARKET INDEX FUND
3,148
stock positions reported to the SEC
4.3% of its weight is in 1,674 names SPTM does not hold
Where each fund's weight sits
Largest sectors for both funds
No sector differs by more than a point between the two.
The figures side by side
| SPTM | VTI | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 1,490 | 3,148 |
| Weight of the ten largest | 34.9% | 33.4% |
| Largest position | NVDA 6.9% | NVDA 6.4% |
| Held alone | 16 positions, 0.3% | 1,674 positions, 4.3% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In SPTM | In VTI | Counted |
|---|---|---|---|
| NVDANVIDIA Corp | 6.92% | 6.36% | 6.36% |
| AAPLApple Inc | 6.07% | 5.87% | 5.87% |
| GOOGLAlphabet Inc | 5.38% | 5.18% | 5.18% |
| MSFTMicrosoft Corp | 3.96% | 3.83% | 3.83% |
| AMZNAmazon.com Inc | 3.33% | 3.19% | 3.19% |
| AVGOBroadcom Inc | 2.56% | 2.47% | 2.47% |
| MUMicron Technology Inc | 1.86% | 1.80% | 1.80% |
| METAMeta Platforms Inc | 1.76% | 1.71% | 1.71% |
| TSLATesla Inc | 1.69% | 1.64% | 1.64% |
| LLYEli Lilly & Co | 1.35% | 1.40% | 1.35% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in SPTM
Only in VTI
Questions people ask
Is SPTM the same as VTI?
94.9% of their weight sits in the same 1,474 holdings. SPTM also reports NXPI, AMCR, PR, which the other does not. VTI also reports SPCX, SNOW, BE, which the other does not.
How is the overlap between SPTM and VTI measured?
For every stock both funds report, the smaller of the two weights counts, and the sum is the overlap. The reported positions cover 100% of SPTM and 100% of VTI, so the number cannot exceed the smaller coverage.
Which holds more, VTI or SPTM?
SPTM reports 1,490 stock positions and VTI reports 3,148. 0.3% of SPTM's weight sits in names VTI does not hold, and 4.3% of VTI's weight in names SPTM does not hold. The ten largest positions are 34.9% of SPTM and 33.4% of VTI.
How do SPTM and VTI differ by sector?
No sector differs by more than a point between the two. Sectors come from each holding's SIC code in its SEC record, summed by the weight the fund reports.
Where do the numbers come from?
From each fund's own N-PORT filing to the SEC, which lists every position and its weight. The comparison uses every equity position the fund reports; cash, futures and bonds are not counted, which is why a coverage figure sits next to every result. Holdings change between filings.
Other pairs with these funds
SPTM against other funds in the table
VTI against other funds in the table
Add a third fund in the tool·All fund pairs
Descriptive data from public SEC filings. Nothing on this page is a recommendation to buy, sell or hold any fund or stock, and holdings change between filings.