State Street® SPDR® S&P® Biotech ETF (XBI) holdings & weights
Per-holding contribution · concentration · sector skew — a deep read
157 identified stocks · net exposure / NAV 99.86%. 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
157 identified stocks · net exposure / NAV 99.86%. 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 18.1% of the fund. The concentration index (HHI) is 112 — Low — evenly diversified, and the largest sector is Health Care (99%). 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 (112), so no single holding dominates.
Health Care alone is 99%. This is effectively a bet on that one industry — if the sector falls, diversification will not help.
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® Biotech ETF 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 (112), so no single holding dominates.
Health Care alone is 99%. This is effectively a bet on that one industry — if the sector falls, diversification will not help.
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® Biotech ETF 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
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 | MODERNAMRNA | 2.53% |
| 2 | NATERANTRA | 1.87% |
| 3 | ABBVIEABBV | 1.79% |
| 4 | HALOZYME THERAPEUTICSHALO | 1.78% |
| 5 | AMGENAMGN | 1.74% |
| 6 | BIOGENBIIB | 1.74% |
| 7 | GILEAD SCIENCESGILD | 1.69% |
| 8 | EXELIXISEXEL | 1.68% |
| 9 | TWIST BIOSCIENCETWST | 1.66% |
| 10 | UNITED THERAPEUTICSUTHR | 1.65% |
| 11 | IOVANCE BIOTHERAPEUTICSIOVA | 1.63% |
| 12 | TG THERAPEUTICSTGTX | 1.55% |
| 13 | REGENERON PHARMACEUTICALSREGN | 1.54% |
| 14 | VERTEX PHARMACEUTICALSVRTX | 1.51% |
| 15 | SPYRE THERAPEUTICSSYRE | 1.45% |
| 16 | KRYSTAL BIOTECHKRYS | 1.43% |
| 17 | ALKERMESALKS | 1.43% |
| 18 | CRISPR THERAPEUTICSCRSP | 1.42% |
| 19 | ALNYLAM PHARMACEUTICALSALNY | 1.41% |
| 20 | INCYTEINCY | 1.41% |
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 112, with the top 10 holdings at just 18.1% 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
By sector, Health Care alone is 99% — whatever the fund is called, this is a bet on that industry.
Bad news for the sector moves the whole fund. Worth checking against anything else you hold in the same space.
Weights above sum the individually listed equities and normalize that equity total to 100%.
How much it overlaps others
Even its closest peer, PBE, overlaps only 27% (19 shared names).
Funds filed under the same label can hold quite different companies, so pairing this one with another may genuinely spread risk.
This page is not investment advice. Investment decisions and responsibility are your own.
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