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GNOM vs XBI: which is really different?

GNOM and XBI hold 20% of their weight in the same names, and GNOM returned +65.7% over the year. Global X Genomics & Biotechnology ETF and State Street(R) SPDR(R) S&P(R) Biotech ETF.

XBI costs 0.15 points a year less; their one-year returns differ by 20.7 points; XBI is far larger, $9.9bn against $104m.

GNOMXBI
Expense ratio0.50%0.35%
Net assets, GNOM as of Oct 9, 2026 and XBI as of Oct 8, 2026$104m$9.9bn
Total return, 1 year+65.7%+45.0%
What it tracksGenomics and gene editingBiotech
Holdings in common20%
S&P 500, total return, 1 year+17.3%
Against the S&P 500, 1 yearahead by 48.5 ptsahead by 27.7 pts
Below its all-time high37.4%, high on Feb 8, 202111.1%, high on Feb 8, 2021

Holdings in common uses holdings dated Oct 8, 2026 and Oct 9, 2026.

23.9%
GNOM in the S&P 500
12.7%
XBI in the S&P 500
+65.7%
GNOM total return, 1 year
+45.0%
XBI total return, 1 year
GNOM · 1 year to Oct 9, 202676% of its weight is outside the S&P 500
76% of its weight is outside the S&P 50024% of GNOM's weight is in S&P 500 companies and 76% is outside the index. Holdings as of Oct 9, 2026.24%76%in the S&P 500of its weight outside the S&P 500active share 98% · top ten 56% of the fund · 50 holdings as published by its issuer for Oct 9, 2026 · Nasdaq-100: 5% in76% of its weight is outside the S&P 50024% of GNOM's weight is in S&P 500 companies and 76% is outside the index. Holdings as of Oct 9, 2026.24%76%inoutside the S&P 500active share 98% · Nasdaq-100: 5% in

24% of GNOM's weight is in S&P 500 companies and 76% is outside the index. Holdings as of Oct 9, 2026.

XBI · 1 year to Oct 9, 202687% of its weight is outside the S&P 500
87% of its weight is outside the S&P 50013% of XBI's weight is in S&P 500 companies and 87% is outside the index. Holdings as of Oct 8, 2026.13%87%inof its weight outside the S&P 500active share 98% · top ten 17% of the fund · 165 holdings as published by its issuer for Oct 8, 2026 · Nasdaq-100: 9% in87% of its weight is outside the S&P 50013% of XBI's weight is in S&P 500 companies and 87% is outside the index. Holdings as of Oct 8, 2026.13%87%inof its weight outside the S&P 500active share 98% · Nasdaq-100: 9% in

13% of XBI's weight is in S&P 500 companies and 87% is outside the index. Holdings as of Oct 8, 2026.

ETFIQ Off-Index Score · XBI scores higherHow much of it is not the index it is sold as an alternative to?
0.1, the lowest in this set92.3, the highest

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, GNOM and XBI hold 20% 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 Oct 8, 2026 and Oct 9, 2026.

half

20% in common

Positions both hold, largest shared weight first
Holding GNOM XBI
MODERNA INC 11.33% 2.20%
TWIST BIOSCIENCE CORP 6.87% 1.84%
NATERA INC 5.40% 1.79%
GILEAD SCIENCES INC 1.59% 1.53%
VERTEX PHARMACEUTICALS INC 3.27% 1.47%
CRISPR THERAPEUTICS AG 2.65% 1.41%
BIOMARIN PHARMACEUTICAL INC 2.83% 1.29%
PRAXIS PRECISION MEDICINES I 2.16% 1.16%
ARROWHEAD PHARMACEUTICALS IN 2.38% 1.11%
VERACYTE INC 2.58% 1.04%
BEAM THERAPEUTICS INC 1.75% 0.87%
CAREDX INC 2.13% 0.84%
Only in GNOM
10X GENOMICS INC-CLASS A 6.67%
ILLUMINA INC 5.97%
GUARDANT HEALTH INC 5.24%
GENSCRIPT BIOTECH CORP 4.49%
BIO-TECHNE CORP 3.46%
QIAGEN N.V. 3.18%
CARIS LIFE SCIENCES INC 2.62%
BIONTECH SE-ADR 2.50%
Only in XBI
ABBVIE INC 1.65%
UNITED THERAPEUTICS CORP 1.59%
AMGEN INC 1.58%
BIOGEN INC 1.57%
HALOZYME THERAPEUTICS INC 1.55%
IOVANCE BIOTHERAPEUTICS INC 1.54%
EXELIXIS INC 1.53%
TG THERAPEUTICS INC 1.48%

20% of the two portfolios are the same securities at the same weight.

Performance, window by window

Total returnvs the S&P 500vs the Nasdaq-100
WindowGNOMXBIGNOMXBIGNOMXBI
3 months+21.4%−3.3%+18.0 pts−6.7 pts+17.7 pts−7.0 pts
6 months+56.8%+18.9%+41.6 pts+3.8 pts+33.6 pts−4.3 pts
1 year+65.7%+45.0%+48.5 pts+27.7 pts+42.1 pts+21.4 pts
3 years+72.0%+114.6%−13.7 pts+28.8 pts−35.2 pts+7.3 pts
Since launch
GNOM Apr 2019 · XBI Feb 2006
+13.7%+890.7%−187.8 pts+92.2 pts−310.8 pts−1,164.7 pts

Source: ETFIQ. Open the live comparison on ETFIQ →

On the same fields

GNOM
Global X Genomics & Biotechnology ETF · Holds 50 stocks in genomics and gene editing, 24% of its weight in S&P 500 companies
XBI
State Street(R) SPDR(R) S&P(R) Biotech ETF · Holds 165 stocks in biotech, 13% of its weight in S&P 500 companies
Issuer Global X State Street
Theme Genomics and gene editing Biotech
In the S&P 500 23.9% 12.7%
Active share vs the S&P 500 97.6% 98.4%
In the Nasdaq-100 4.9% 8.5%
Holdings 50 165
Top ten, share of the fund 55.9% 16.9%
Expense ratio 0.50% 0.35%
Fee for the differing part 0.51% 0.36%
Total return, 1 year +65.7% +45.0%
vs the S&P 500 +48.5 pts +27.7 pts
vs the Nasdaq-100 +42.1 pts +21.4 pts
Below its high −37.4% −11.1%
Net assets, GNOM as of Oct 9, 2026 and XBI as of Oct 8, 2026 $104m $9.9bn

As of Oct 9, 2026. Source: ETFIQ.

GNOM in plain words

By weight, 24% of GNOM'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 56% of the fund across 50 positions, as published by its issuer for Oct 9, 2026. Over the year to Oct 9, 2026 the fund returned +65.7% with distributions reinvested against +17.3% for the S&P 500, so a holder was ahead by 48.5 pts. It sits 37.4% below its all-time high of Feb 8, 2021.

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 GNOM and XBI hold the same stocks?
By their latest filings, 20% 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.
Which is more different from the S&P 500, GNOM or XBI?
GNOM has 24% of its weight in S&P 500 names and XBI has 13%, so XBI differs more from the index.
Which is cheaper, GNOM or XBI?
GNOM charges 0.50% a year and XBI charges 0.35%, so XBI is cheaper. Fees come from each fund's prospectus.
Other comparisons
GNOM vs IBBGNOM vs PBPHGNOM vs IBBQGNOM vs BBPXBI vs IDNAXBI vs ARKGXBI vs GNMXXBI vs XT
GNOM on its own →XBI on its own →How every figure is computed →Standards and sources →
Where these figures came from
GNOM filings on SEC EDGAR ↗GNOM prospectus with the expense ratio (SEC) ↗Global X page for GNOM ↗XBI filings on SEC EDGAR ↗XBI prospectus with the expense ratio (SEC) ↗State Street website ↗

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.

Cite this page

ETFIQ, GNOM against XBI, data as of Oct 9, 2026. https://etfiq.com/compare/themes/gnom-vs-xbi

Open data

Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.