BBP vs XBI: which is really different?
BBP and XBI hold 46% of their weight in the same names. Virtus Biotech ETF and State Street(R) SPDR(R) S&P(R) Biotech ETF.
BBP costs 0.01 points a year less; their one-year returns differ by 0.2 points; XBI is far larger, $9.9bn against $99m.
| BBP | XBI | |
|---|---|---|
| Expense ratio | 0.34% | 0.35% |
| Net assets, BBP as of Jul 31, 2026 and XBI as of Oct 8, 2026 | $99m | $9.9bn |
| Total return, 1 year | +45.2% | +45.0% |
| What it tracks | Biotech | Biotech |
| Holdings in common | 46% | |
| S&P 500, total return, 1 year | +17.3% | |
| Against the S&P 500, 1 year | ahead by 27.9 pts | ahead by 27.7 pts |
| Below its all-time high | 11.1%, high on Feb 8, 2021 | |
Holdings in common uses holdings dated Jul 31, 2026 and Oct 8, 2026.
11% of BBP's weight is in S&P 500 companies and 89% is outside the index. Holdings as of Jul 31, 2026.
13% of XBI's weight is in S&P 500 companies and 87% is outside the index. Holdings as of Oct 8, 2026.
A percentile among the 391 thematic ETFs with a holdings filing. All thematic ETFs ranked by it → How it is computed →
What they hold in common
By the books each fund has filed, BBP and XBI hold 46% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated Jul 31, 2026 and Oct 8, 2026.
half
46% in common
46% of the two portfolios are the same securities at the same weight.
Performance, window by window
| Total return | vs the S&P 500 | vs the Nasdaq-100 | ||||
|---|---|---|---|---|---|---|
| Window | BBP | XBI | BBP | XBI | BBP | XBI |
| 3 months | +4.5% | −3.3% | +1.1 pts | −6.7 pts | +0.8 pts | −7.0 pts |
| 6 months | +24.3% | +18.9% | +9.2 pts | +3.8 pts | +1.1 pts | −4.3 pts |
| 1 year | +45.2% | +45.0% | +27.9 pts | +27.7 pts | +21.6 pts | +21.4 pts |
| 3 years | +110.3% | +114.6% | +24.5 pts | +28.8 pts | +3.0 pts | +7.3 pts |
| Since launch BBP Dec 2014 · XBI Feb 2006 | +308.1% | +890.7% | −63.1 pts | +92.2 pts | −400.3 pts | −1,164.7 pts |
Source: ETFIQ. Open the live comparison on ETFIQ →
On the same fields
As of Oct 9, 2026. Source: ETFIQ.
BBP in plain words
By weight, 11% of BBP's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 99%. The top ten holdings are 20% of the fund across 67 positions, as filed for Jul 31, 2026. Over the year to Oct 9, 2026 the fund returned +45.2% with distributions reinvested against +17.3% for the S&P 500, so a holder was ahead by 27.9 pts.
XBI in plain words
By weight, 13% of XBI's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 98%. The top ten holdings are 17% of the fund across 165 positions, as published by its issuer for Oct 8, 2026. Over the year to Oct 9, 2026 the fund returned +45.0% with distributions reinvested against +17.3% for the S&P 500, so a holder was ahead by 27.7 pts. It sits 11.1% below its all-time high of Feb 8, 2021.
Questions people ask
- Do BBP and XBI hold the same stocks?
- By their latest filings, 46% of their books are the same securities at the same weight, which is a meaningful overlap. Overlap is the sum of the smaller weight of every security they share.
ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.
How this is computed
It is a position in a set, not a rating, and neither end of it is a recommendation.
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed.
Every figure is an ETFIQ calculation with distributions reinvested.
ETFIQ, BBP against XBI, data as of Oct 9, 2026. https://etfiq.com/compare/themes/bbp-vs-xbi
ETFIQ. (Oct 9, 2026). BBP against XBI. Retrieved from https://etfiq.com/compare/themes/bbp-vs-xbi
[BBP against XBI (ETFIQ, Oct 9, 2026)](https://etfiq.com/compare/themes/bbp-vs-xbi)
Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.