IBBvsGNMXETF Comparison
VS
iShares Biotechnology ETF (IBB) belongs to the US Health Care segment. Corgi Genomics & Precision Medicine ETF (GNMX) is part of the BioTech & Genomics segment. IBB's top 3 sector exposures are Healthcare, Non-Corporate and Non-Energy Materials. In contrast, GNMX's top sector exposures are Healthcare, IBB is more expensive with a Total Expense Ratio (TER) of 0.44%, versus 0.35% for GNMX. Run a side-by-side ETF comparison of IBB and GNMX below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
Find out how industry players manage ETF portfolios. Discover our library of Model portfolios
IBB vs GNMX performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 07/24/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IBB GNMX | +3.70%+1.85% | +10.81%n/a | +11.58%n/a | +39.33%n/a | +46.64%n/a | +16.63%n/a |
| Flows | IBB GNMX | +$526M- | +$314M- | +$89M- | +$1.44B- | -$939M- | -$1.82B- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IBB GNMX | +22.62%n/a | +20.32%n/a | +20.40%n/a | +22.33%n/a |
| Max drawdown | IBB GNMX | -5.94%n/a | -9.61%n/a | -24.82%n/a | -39.75%n/a |
| Max drawdown duration | IBB GNMX | 17dn/a | 151dn/a | 377dn/a | 1611dn/a |
Trading data
IBB | GNMX | |
Last sale 7/27/2026 at 1:30 PM | $188.36 | |
| Previous close 07/24/2026 | $188.14 | |
| Consolidated volume 07/24/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of June 30, 2026
1-year trailing difference
Create an account to view replication metrics
Join for free
GNMX
is actively managed and doesn’t replicate an indexIBB | GNMX | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
Advertisement
Main metrics
Last update 7/27/2026 at 1:30 PM
Live
Closed
IBB | GNMX | |
|---|---|---|
| Last price | $188.36 | – |
| 1D performance | +0.12% | – |
| AuM | $9.34 B | $1.64 M |
| E/R | 0.44% | 0.35% |
Characteristics
IBB | GNMX | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | iShares | Corgi Funds |
| Benchmark | ICE Biotechnology Index | - |
| N° of holdings | 242 | 57 |
| Asset class | Equities | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | February 5, 2001 | May 6, 2026 |
| ESG | No | No |
Advertisement
Exposure
Countries
IBB
USA
86.15%
Other
13.85%
GNMX
USA
89.37%
Other
10.63%
Sectors
IBB
Healthcare
99.89%
Other
0.11%
GNMX
Healthcare
98.21%
Other
1.79%
Advertisement
Diversification
IBB
Total weight of top 15 holdings out of 15
53.71%
GNMX
Total weight of top 15 holdings out of 15
53.1%
Top 15 holdings
Data as of June 30, 2026
IBB
Vertex Pharmaceuticals, Inc.
8.07%
Amgen, Inc.
7.82%
Gilead Sciences, Inc.
6.83%
Regeneron Pharmaceuticals, Inc.
4.90%
argenx SE
3.75%
Alnylam Pharmaceuticals, Inc.
3.12%
Natera, Inc.
2.89%
Revolution Medicines, Inc.
2.78%
Biogen, Inc.
2.46%
Illumina, Inc.
2.07%
Moderna, Inc.
1.98%
Insmed, Inc.
1.78%
BeOne Medicines Ltd.
1.77%
Incyte Corp.
1.75%
United Therapeutics Corp.
1.73%
GNMX
Thermo Fisher Scientific, Inc.
7.80%
Vertex Pharmaceuticals, Inc.
6.73%
Guardant Health, Inc.
3.85%
Illumina, Inc.
3.84%
Revolution Medicines, Inc.
3.83%
Alnylam Pharmaceuticals, Inc.
3.77%
Moderna, Inc.
3.71%
Incyte Corp.
3.09%
Genmab A/S
2.54%
Bio-Techne Corp.
2.50%
Ionis Pharmaceuticals, Inc.
2.49%
Krystal Biotech, Inc.
2.43%
BioMarin Pharmaceutical, Inc.
2.33%
Arrowhead Pharmaceuticals, Inc.
2.12%
uniQure NV
2.07%
Frequently asked questions about IBB and GNMX
Which ETF is bigger: IBB or GNMX?
As of July 24, 2026, IBB holds $9.34 B in assets under management (AUM), while GNMX manages $1.64 M.
What sectors do the IBB and GNMX ETFs invest in?
IBB leans toward sectors like Healthcare. Meanwhile, GNMX focuses on Healthcare.
What are the top holdings of the IBB ETF and GNMX ETF?
IBB top holdings include Vertex Pharmaceuticals, Inc., Amgen, Inc. and Gilead Sciences, Inc.. GNMX holds in its top three: Thermo Fisher Scientific, Inc., Vertex Pharmaceuticals, Inc. and Guardant Health, Inc..
Which ETF is more diversified: IBB or GNMX?
IBB holds 242 securities with 53.71% of its assets in the top 15. GNMX has 57 securities and a top 15 weight of 53.1%.
Advertisement
Latest news about IBB & GNMX
Small-Cap Biotech ETFs: High-Risk, High-Reward Opportunities
September 18, 2025
IBB
Are Biotechnology ETFs In the Midst of a Comeback?
August 20, 2025
IBB
Investing in the Aging Population: A Look at Bonds and Pharma ETFs
March 27, 2023
IBB
Health is Wealth: A look at the Healthcare Sector
January 24, 2023
IBB
Advertisement
Biotech ETFs – Investing in Health Innovation
July 21, 2022
IBB
Biotech ETFs – Investing in Health Innovation
July 21, 2022
IBB
Advertisement
