SPMD vs XMMO overlap - what they share and where they differ
SPMD and XMMO share 26.6% of their weight across 73 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.
SPMD and XMMO
26.6%
73 shared positions
SPMD
State Street(R) SPDR(R) Portfolio S&P 400(TM) Mid Cap ETF
Reported positions cover 100% of the fund, 400 positions · Jun 30, 2026
Top 10: 7.7%·Holdings of SPMD
XMMO
Invesco S&P MidCap Momentum ETF
Reported positions cover 100% of the fund, 76 positions · Apr 30, 2026
Top 10: 27.9%·Holdings of XMMO
Reported positions cover SPMD 100%, XMMO 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
XMMO vs SPMD side by side
SPMDState Street(R) SPDR(R) Portfolio S&P 400(TM) Mid Cap ETF
400
stock positions reported to the SEC
73.2% of its weight is in 327 names XMMO does not hold
XMMOInvesco S&P MidCap Momentum ETF
76
stock positions reported to the SEC
4.5% of its weight is in 3 names SPMD does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Basic Materials: XMMO has 13.3 points more of it.
The figures side by side
| SPMD | XMMO | |
|---|---|---|
| Filing date | Jun 30, 2026 | Apr 30, 2026 |
| Stock positions reported | 400 | 76 |
| Weight of the ten largest | 7.7% | 27.9% |
| Largest position | TWLO 0.9% | CW 3.9% |
| Held alone | 327 positions, 73.2% | 3 positions, 4.5% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In SPMD | In XMMO | Counted |
|---|---|---|---|
| CRSCarpenter Technology Corp | 0.84% | 1.74% | 0.84% |
| MKSIMKS Inc | 0.83% | 1.92% | 0.83% |
| CWCurtiss-Wright Corp | 0.77% | 3.91% | 0.77% |
| NVENT ELECTRIC PLC | 0.76% | 2.32% | 0.76% |
| ATIATI Inc | 0.74% | 2.63% | 0.74% |
| FTITechnipFMC PLC | 0.73% | 3.60% | 0.73% |
| MTZMasTec Inc | 0.71% | 2.26% | 0.71% |
| STRLSterling Infrastructure Inc | 0.71% | 2.16% | 0.71% |
| WWDWoodward Inc | 0.70% | 2.58% | 0.70% |
| MTSIMACOM Technology Solutions Holdings Inc | 0.69% | 1.49% | 0.69% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in SPMD
Only in XMMO
Questions people ask
Is SPMD the same as XMMO?
26.6% of their weight sits in the same 73 holdings. SPMD also reports TWLO, ENTG, ILMN, which the other does not. XMMO also reports FLEX LTD., WPC, BRINK'S CO. (THE), which the other does not.
How is the overlap between SPMD and XMMO 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 SPMD and 100% of XMMO, so the number cannot exceed the smaller coverage.
Which holds more, XMMO or SPMD?
SPMD reports 400 stock positions and XMMO reports 76. 73.2% of SPMD's weight sits in names XMMO does not hold, and 4.5% of XMMO's weight in names SPMD does not hold. The ten largest positions are 7.7% of SPMD and 27.9% of XMMO.
How do SPMD and XMMO differ by sector?
The widest gap is Basic Materials: XMMO has 13.3 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
SPMD 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.