State Street SPDR S&P Biotech ETF (XBI) holdings
Top holdings
The 10 largest positions make up 17.3% of the fund, as reported on Oct 14, 2026.
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Frequently asked questions
What are the top holdings of XBI?
As of Oct 14, 2026, the largest positions in State Street SPDR S&P Biotech ETF are MRNA (2.4%), TWST (1.8%), NTRA (1.8%), ABBV (1.7%), IOVA (1.7%).
How concentrated is XBI?
The 10 largest positions make up 17.3% of State Street SPDR S&P Biotech ETF, as reported on Oct 14, 2026.
Fund holdings are reported periodically and are a snapshot of a past date, not a live position list — what the fund holds today may differ. Weights cover only the largest positions shown, not the whole portfolio.
This page is for informational purposes only. Nothing on it is a recommendation, solicitation or offer to buy or sell any security, nor investment, legal or tax advice. Light Horse Securities Inc does not verify third-party data and is not responsible for its accuracy, completeness or timeliness.