# State Street SPDR S&P Biotech ETF (XBI) — Holdings

XBI · NYSE · Fund

Canonical page: https://www.lighthorse.io/tickers/xbi/holdings

## Top holdings (as of Oct 14, 2026)

The 10 largest positions make up 17.7% of the fund. Want full holdings data source? [Register at AInvest](https://www.ainvest.com/etfs/NYSE-XBI/holdings/).

| Ticker | Weight |
| --- | --- |
| MRNA | 2.47% |
| TWST | 1.87% |
| NTRA | 1.86% |
| IOVA | 1.71% |
| ABBV | 1.69% |
| BIIB | 1.68% |
| UTHR | 1.66% |
| AMGN | 1.64% |
| EXEL | 1.58% |
| HALO | 1.58% |

## 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 (2.5%), TWST (1.9%), NTRA (1.9%), IOVA (1.7%), ABBV (1.7%).

### How concentrated is XBI?

The 10 largest positions make up 17.7% of State Street SPDR S&P Biotech ETF, as reported on Oct 14, 2026.

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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.

Data provided by [AInvest](https://www.ainvest.com).