State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) holdings & weights
Per-holding contribution · concentration · sector skew — a deep read
399 identified stocks · net exposure / NAV 98.89%. Display weights are normalized to 100%; calculations retain original exposures without an additional leverage multiplier. Cash and unallocated contracts are excluded from stock attribution.
Weight and calculation basis
399 identified stocks · net exposure / NAV 98.89%. Display weights are normalized to 100%; calculations retain original exposures without an additional leverage multiplier. Cash and unallocated contracts are excluded from stock attribution.
We have this ETF's holdings, but the prices for those particular listings are outside our quote coverage (currently Korea- and US-listed securities). So today's contribution and return are not computed — showing 0% would claim it did not move, which is a different statement. The holdings and weights below follow the calculation basis above.
Today's summary
Its top 10 holdings make up about 7.1% of the fund. The concentration index (HHI) is 33 — Low — evenly diversified, and the largest sector is Consumer Discretionary (22%). The higher the concentration, the more one stock or sector drives the whole ETF's return.
Structural health
A five-axis read on how this fund is built. It is not a return forecast or a recommendation, and a low score does not mean a bad fund — leveraged products score low by design. Each axis shows the figure behind it.
Concentration is below 1,500 (33), so no single holding dominates.
The largest sector is Consumer Discretionary at 22% — industries are reasonably spread.
A plain 1x physical fund holding the shares themselves — no structural drift from how long you hold it.
We don't have cost, fund size for State Street SPDR S&P MIDCAP 400 ETF Trust yet, so those axes are excluded and the score is based on the other 3. Scoring a missing figure as zero would grade our data collection, not the fund.
Concentration and diversification
Structural health
A five-axis read on how this fund is built. It is not a return forecast or a recommendation, and a low score does not mean a bad fund — leveraged products score low by design. Each axis shows the figure behind it.
Concentration is below 1,500 (33), so no single holding dominates.
The largest sector is Consumer Discretionary at 22% — industries are reasonably spread.
A plain 1x physical fund holding the shares themselves — no structural drift from how long you hold it.
We don't have cost, fund size for State Street SPDR S&P MIDCAP 400 ETF Trust yet, so those axes are excluded and the score is based on the other 3. Scoring a missing figure as zero would grade our data collection, not the fund.
Top 20 holdings
1 derivative positions are excluded. Stock contributions do not explain the entire ETF return.
Weights are normalized to 100% of absolute exposures across analysed positions, including positions outside this top list. Cash, collateral and unverified assets are excluded. Contributions retain original signed NAV exposures; leverage is not applied twice.
Normalized to 100% of analysed positions
Weights are normalized to 100% of absolute exposures across analysed positions, including positions outside this top list. Cash, collateral and unverified assets are excluded. Contributions retain original signed NAV exposures; leverage is not applied twice.
| # | Holding | Weight |
|---|---|---|
| 1 | OktaOKTA | 0.93% |
| 2 | TechnipFMCFTI | 0.81% |
| 3 | ATIATI | 0.76% |
| 4 | United TherapeuticsUTHR | 0.69% |
| 5 | nVent ElectricNVT | 0.68% |
| 6 | EntegrisENTG | 0.65% |
| 7 | US FoodsUSFD | 0.64% |
| 8 | XPOXPO | 0.64% |
| 9 | Tenet HealthcareTHC | 0.64% |
| 10 | RelianceRS | 0.63% |
| 11 | Permian ResourcesPR | 0.62% |
| 12 | RokuROKU | 0.61% |
| 13 | Royal GoldRGLD | 0.59% |
| 14 | TD SYNNEXSNX | 0.59% |
| 15 | WoodwardWWD | 0.58% |
| 16 | OvintivOVV | 0.57% |
| 17 | HF SinclairDINO | 0.57% |
| 18 | Roivant SciencesROIV | 0.56% |
| 19 | Carpenter TechnologyCRS | 0.56% |
| 20 | MACOM Technology SolutionsMTSI | 0.55% |
Holdings below 0.5% or outside the top list are folded into “Others” and omitted above.
Where the weight sits — sector mix
Listed equity weights summed by sector and normalized to 100%. Each band is one sector's share.
Industry breakdown
HHI sums the squared weights. The more it leans on a few names, the higher it goes — and the more the whole ETF moves with them.
How concentrated is it
Concentration (HHI) is low at 33, with the top 10 holdings at just 7.1% of equity weight. No single name can dominate the fund.
Good for damping single-stock risk — and equally, a big winner inside gets diluted.
HHI squares each weight and sums them: 10,000 means one stock is everything, and the more evenly spread the holdings, the closer it falls to zero.
Where the sector weight sits
Sectors run Consumer Discretionary(22%) · Industrials(19%) · Information Technology(14%), and even the largest is only 22% — no meaningful industry tilt.
This is built to track a market rather than to call a sector.
Weights above sum the individually listed equities and normalize that equity total to 100%.
How much it overlaps others
It shares 65% of its holdings with MDYG (247 names in common) — close to half the same companies.
Own both and the diversification is thinner than it looks.
What it is made of
The fund holds 400 positions in total; this page lists the largest 399 and folds the rest into "Others".
This page is not investment advice. Investment decisions and responsibility are your own.
MDY comments
Leave a one-line take on State Street SPDR S&P MIDCAP 400 ETF Trust. No account — just a nickname and a code to delete it later.
Loading…
Similar ETFs
Picked by how much their actual holdings overlap. The higher the overlap, the less diversification you get from owning both.