ETF · holdings as filed 2026-04-30
What's inside IBRN?
iShares Neuroscience and Healthcare ETF
- Holdings
- 84
- positions in the fund
- Top 10
- 42%
- of fund assets
- Expense ratio
- 0.47%
- net, per year
- Fund size
- $5M
- total net assets
Top 20 holdings
| Rank | Logo | Ticker / Name | Weight | |
|---|---|---|---|---|
| 1 | B  | BISXXBCF INSTITUTIONAL-SL AGNCY | 7.89% | |
| 2 | X  | XENEXENON PHARMACEUTICALS INC | 4.41% | |
| 3 | A  | AXSMAXSOME THERAPEUTICS INC | 4.23% | |
| 4 | A  | ARWRARROWHEAD PHARMACEUTICALS IN | 4.06% | |
| 5 | A  | ALKSALKERMES PLC | 3.87% | |
| 6 | 2  | 260CENTESSA PHARMACEUTICALS-ADR | 3.64% | |
| 7 | A  | ARGXARGENX SE - ADR | 3.58% | |
| 8 | P  | PTCTPTC THERAPEUTICS INC | 3.40% | |
| 9 | N  | NBIXNEUROCRINE BIOSCIENCES INC | 3.39% | |
| 10 | B  | BIIBBIOGEN INC | 3.38% | |
| 11 | S  | SRRKSCHOLAR ROCK HOLDING CORP | 3.38% | |
| 12 | P  | PRAXPRAXIS PRECISION MEDICINES I | 3.37% | |
| 13 | A  | ACAACADIA PHARMACEUTICALS INC | 3.33% | |
| 14 | D  | DNTHDIANTHUS THERAPEUTICS INC | 3.12% | |
| 15 | ? | —CATALYST PHARMACEUTICALS, INC. | 3.03% | |
| 16 | D  | DNLIDENALI THERAPEUTICS INC | 2.60% | |
| 17 | S  | SUPNSUPERNUS PHARMACEUTICALS INC | 2.56% | |
| 18 | E  | EWTXEDGEWISE THERAPEUTICS INC | 2.33% | |
| 19 | D  | DYNDYNE THERAPEUTICS INC | 2.18% | |
| 20 | A  | AXGNAXOGEN INC | 2.15% |
Top holdings — Health Care
Your 10 largest positions in this sector
1
X
XENEXENON PHARMACEUTICALS INC
4.41%2
A
AXSMAXSOME THERAPEUTICS INC
4.23%3
A
ARWRARROWHEAD PHARMACEUTICALS IN
4.06%4
A
ALKSALKERMES PLC
3.87%5
A
ARGXARGENX SE - ADR
3.58%6
P
PTCTPTC THERAPEUTICS INC
3.40%7
N
NBIXNEUROCRINE BIOSCIENCES INC
3.39%8
B
BIIBBIOGEN INC
3.38%9
S
SRRKSCHOLAR ROCK HOLDING CORP
3.38%10
P
PRAXPRAXIS PRECISION MEDICINES I
3.37%Top holdings — United States
Your 10 largest positions in this country
1
B
BISXXBCF INSTITUTIONAL-SL AGNCY
7.89%2
A
AXSMAXSOME THERAPEUTICS INC
4.23%3
A
ARWRARROWHEAD PHARMACEUTICALS IN
4.06%4
P
PTCTPTC THERAPEUTICS INC
3.40%5
N
NBIXNEUROCRINE BIOSCIENCES INC
3.39%6
B
BIIBBIOGEN INC
3.38%7
S
SRRKSCHOLAR ROCK HOLDING CORP
3.38%8
P
PRAXPRAXIS PRECISION MEDICINES I
3.37%9
A
ACAACADIA PHARMACEUTICALS INC
3.33%10
D
DNTHDIANTHUS THERAPEUTICS INC
3.12%Geography reflects each issuer's registered business address per SEC EDGAR filings where available, falling back to the exchange or listing where no SEC filing exists — not necessarily where a company's stock is primarily listed (e.g. TSMC is classified as Taiwan even though its ADR trades on the NYSE).
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Data source: official SEC Form N-PORT filings (as of 2026-04-30); expense ratio from SEC prospectus (risk/return) filings. Fund holdings are disclosed quarterly and may reflect a 60-day reporting delay.
Informational and educational only — not investment advice.
Informational and educational only — not investment advice.