DFAC vs SPTM overlap - what they share and where they differ
DFAC and SPTM share 71.2% of their weight across 1,338 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.
DFAC and SPTM
71.2%
1,338 shared positions
DFAC
Dimensional U.S. Core Equity 2 ETF
Reported positions cover 100% of the fund, 2,313 positions · Jul 31, 2026
Top 10: 26.9%·Holdings of DFAC
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
Reported positions cover DFAC 100%, SPTM 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
SPTM vs DFAC side by side
DFACDimensional U.S. Core Equity 2 ETF
2,313
stock positions reported to the SEC
6.5% of its weight is in 975 names SPTM does not hold
SPTMState Street(R) SPDR(R) Portfolio S&P 1500(R) Composite Stock Market ETF
1,490
stock positions reported to the SEC
3.1% of its weight is in 152 names DFAC does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: SPTM has 10.8 points more of it.
The figures side by side
| DFAC | SPTM | |
|---|---|---|
| Filing date | Jul 31, 2026 | Jun 30, 2026 |
| Stock positions reported | 2,313 | 1,490 |
| Weight of the ten largest | 26.9% | 34.9% |
| Largest position | NVDA 5.3% | NVDA 6.9% |
| Held alone | 975 positions, 6.5% | 152 positions, 3.1% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In DFAC | In SPTM | Counted |
|---|---|---|---|
| NVDANVIDIA CORPORATION | 5.27% | 6.92% | 5.27% |
| AAPLAPPLE INC. | 5.12% | 6.07% | 5.12% |
| MSFTMICROSOFT CORPORATION | 4.41% | 3.96% | 3.96% |
| AMZNAMAZON.COM, INC. | 3.14% | 3.33% | 3.14% |
| GOOGLALPHABET INC. | 2.78% | 5.38% | 2.78% |
| METAMETA PLATFORMS, INC. | 1.73% | 1.76% | 1.73% |
| AVGOBROADCOM INC. | 1.18% | 2.56% | 1.18% |
| JPMJPMORGAN CHASE & CO. | 1.09% | 1.25% | 1.09% |
| MUMICRON TECHNOLOGY, INC. | 1.09% | 1.86% | 1.09% |
| LLYELI LILLY AND COMPANY | 1.05% | 1.35% | 1.05% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in DFAC
Only in SPTM
Questions people ask
Is DFAC the same as SPTM?
71.2% of their weight sits in the same 1,338 holdings. DFAC also reports SEAGATE TECHNOLOGY HOLDINGS PUBLIC LIMITED COMPANY, AON PUBLIC LIMITED COMPANY, LNG, which the other does not. SPTM also reports STX, WELL, PLD, which the other does not.
How is the overlap between DFAC and SPTM 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 DFAC and 100% of SPTM, so the number cannot exceed the smaller coverage.
Which holds more, SPTM or DFAC?
DFAC reports 2,313 stock positions and SPTM reports 1,490. 6.5% of DFAC's weight sits in names SPTM does not hold, and 3.1% of SPTM's weight in names DFAC does not hold. The ten largest positions are 26.9% of DFAC and 34.9% of SPTM.
How do DFAC and SPTM differ by sector?
The widest gap is Technology: SPTM has 10.8 points more of it. 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
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.