FBT vs XBI: holdings overlap, shared companies and scores
As of September 11, 2026, FBT and XBI overlap 20.1% by weight. First Trust NYSE Arca Biotechnology Index Fund (FBT): U.S. biotech stocks. State Street SPDR S&P Biotech ETF (XBI): U.S. biotech industry stocks.
Updated September 11, 2026
How much do FBT and XBI overlap?
As of September 11, 2026, FBT and XBI overlap 20.1% by weight.
62% of FBT is already inside XBI.
20% of XBI is already inside FBT.
FBT holds 30 companies and XBI holds 145; 19 are in both.
Computed by ETF Copilot from both funds' holdings rather than quoted from a data provider, and rebuilt nightly.
How does ETF Copilot score FBT and XBI?
As of September 11, 2026, ETF Copilot scores FBT 4.6 out of 10 and XBI 2.7 out of 10.
They differ most on Growth: FBT 5.4 and XBI 1.6.
The five factor scores behind them are set out below, 0–10 and higher is better, ranked against every US equity ETF we track.
| Factor | FBT | XBI |
|---|---|---|
| Growth | 5.4 | 1.6 |
| Valuation | 4.0 | — |
| Risk | 4.1 | 1.4 |
| Quality | 3.2 | 2.5 |
| Return | 5.4 | 4.7 |
XBI is the cheaper of the two at 0.35% a year
As of September 11, 2026, FBT charges 0.55% a year, yields 0.23% and holds $2.9B in assets across 30 positions.
As of September 11, 2026, XBI charges 0.35% a year, yields 0.15% and holds $11.3B in assets across 145 positions.
| Measure | FBT | XBI |
|---|---|---|
| Expense ratio | 0.55% | 0.35% |
| Dividend yield | 0.23% | 0.15% |
| Assets under management | $2.9B | $11.3B |
| Holdings | 30 | 145 |
Expense ratio, dividend yield and assets under management are reported by the fund and refreshed daily. Every other figure on this page is computed by ETF Copilot.
Where FBT and XBI trade against their own history
FBT trades at 23.8 times earnings, against its own median of 23.6, and is more expensive than 51% of its own 114 monthly readings since 2017.
XBI trades at 23.3 times earnings, against its own median of 17.7, and is more expensive than 79% of its own 114 monthly readings since 2017.
What moved FBT and XBI this week
FBT fell 4.4% in the week to September 11, 2026. The holdings that moved it most were Amgen (−15.0%), Sarepta Therapeutics (−11.0%) and Bruker (−10.1%); Axsome Therapeutics (+6.0%) pushed the other way.
XBI fell 5.0% in the week to September 11, 2026. The holdings that moved it most were Dyne Therapeutics (−27.0%), Sellas Life Sciences (−15.7%) and Amgen (−15.0%); Roivant Sciences (+18.6%) pushed the other way.
What do FBT and XBI each hold?
38% of FBT is its ten largest holdings.
16% of XBI is its ten largest holdings.
Compare with similar funds
Cite this
ETF Copilot, “FBT vs XBI holdings overlap and scores”, as of September 11, 2026.
https://etf-copilot.com/compare/fbt-vs-xbi
Register free to unlock FBT vs XBI prices and holdings on ETF Copilot.
Register free →