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IBB · iShares Biotechnology ETF

IBB tracks the Biotechnology and returned +41.5% over the past year.

Index equity fund · Biotechnology · data as of

Key facts

+41.5%Total return, 1 year
0.44%Expense ratio
233Holdings
−6.5%Below its high

Its ten largest equity positions

IBB top ten by weight, 47.5% of its 233 equity positions, from the holdings published by its issuer for Sep 10, 2026. An index fund holds what the index holds, so this is the index. Source: the issuer’s own daily file.
HoldingTickerWeight
VERTEX PHARMACEUTICALSVRTX7.94%
AMGEN INCAMGN7.85%
GILEAD SCIENCESGILD7.44%
REGENERON PHARMACEUTICALSREGN5.92%
ARGENX SE ADRARGX3.78%
MODERNAMRNA3.67%
NATERANTRA3.30%
REVOLUTION MEDICINESRVMD2.87%
ALNYLAM PHARMACEUTICALSALNY2.44%
BIOGENBIIB2.33%

Compare IBB

Also against BINC, BITO, BND, BNDX, BOND, BOXX, BSV, BWET, CGBL, CGDV, CGGR, COWZ, CTA, DBMF, DFUS, DGRO, DGRW, DIA, DVY, DYNF, EDV, EEM, EFA, EMB, EMXC, EWJ, EWT, EWY, EWZ, EZU, FBCG, FDVV, FENI, FLKR, FNDX, FTEC, FXI, GARP, GLD, GLDM, GOVT, GRNY, HDV, HGER, HYG, HYMB, IALT, IAU, IDEV, IEF, IEFA, IEI, IEMG, IGIB, IGM, IGSB, IJH, IJR, IJS, IJT, ILF, INDA, ITOT, IUSB, IVV, IWB, IWC, IWD, IWF, IWM, IWO, IXUS, IYE, IYR, IYW, JAAA, JNK, KRE, LQD, MAGS, MBB, MDY, MGK, MINT, MOAT, MTUM, MUB, NOBL, ONEQ, PDBC, PFF, PULS, PVAL, QQQ, QQQM, QUAL, RDVY, RSP, SCHB, SCHD, SCHF, SCHG, SCHH, SCHP, SCHX, SDY, SGOV, SHV, SHY, SIVR, SLV, SPHD, SPHQ, SPMO, SPSB, SPY, SPYD, SPYG, SPYM, TIP, TLT, URTH, USFR, USHY, USMV, USO, VB, VBIL, VBK, VBR, VCIT, VCLT, VCSH, VDC, VDE, VEA, VEU, VGIT, VGK, VGLT, VGSH, VGT, VHT, VIG, VLUE, VNQ, VO, VOE, VONG, VOO, VOOG, VOX, VPL, VPU, VT, VTEB, VTI, VTIP, VTV, VTWO, VUG, VUSB, VWO, VXF, VXUS, VYM, VYMI, XBI, XHB, XLB, XLC, XLE, XLF, XLG, XLI, XLK, XLP, XLRE, XLU, XLV, XLY, XOP, XOVR, XRT.

Period by period

IBB over each window to Sep 11, 2026. Every figure is an ETFIQ calculation. Source: ETFIQ.
WindowTotal returnS&P 500Gap to S&P 500Gap to Nasdaq-100
3 months+18.9%+3.3%+15.6 pts+19.7 pts
6 months+22.7%+16.0%+6.7 pts+2.0 pts
1 year+41.5%+17.5%+24.0 pts+18.5 pts
3 years+60.5%+77.9%−17.4 pts−34.6 pts
Since listing+663.1%+804.4%−141.3 pts−1010.8 pts

In plain words

IBB is an index equity fund tracking the Biotechnology. Over the year to Sep 11, 2026 it returned +41.5% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.44% a year. By its holdings filed for Sep 10, 2026, 36% of the fund by weight is stocks the S&P 500 also holds, across 233 positions, with the top ten at 47.5%. It sat 6.5% below its high of Aug 19, 2026 on Sep 11, 2026.

What it tracksBiotechnology
Fund typeIndex equity fund
Expense ratio (485BPOS XBRL, Jul 27, 2026)0.44%
Price$202.93
Listed sinceJan 4, 2010
Net assets (the issuer own daily fund list, as of Sep 11, 2026)$10.3bn
Below its high (ETFIQ)−6.5%
Holdings233
Top ten weight47.5%
Holdings as of (SEC N-PORT)Sep 10, 2026
Already in the S&P 500, by weight (ETFIQ)35.6%
Active share vs the S&P 500 (ETFIQ)99.0%
Already in the Nasdaq-100, by weight (ETFIQ)32.6%

Questions people ask

How has IBB performed?
Over the year to Sep 11, 2026, IBB returned +41.5% with distributions reinvested, against +17.5% for the S&P 500. Over three years the figure is +60.5%.
What does IBB cost?
The prospectus expense ratio is 0.44% a year.
What does IBB hold?
233 positions as filed for Sep 10, 2026, with the top ten at 47.5% of the fund. 36% of its weight is in stocks the S&P 500 also holds.
How far is IBB below its high?
6.5% below its high of Aug 19, 2026, measured on the reinvested series to Sep 11, 2026.

Where these figures came from

ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.

Funds near this one

Where IBB is written about

IBB, core index fund, ETFIQ, data as of Sep 11, 2026. Every figure is arithmetic on a named public source; the method is at etfiq.com/methodology. ETFIQ is an independent publisher, is not a fund issuer, broker-dealer or investment adviser, and makes no recommendations.

Cite this page. ETFIQ, IBB, core index fund, data as of Sep 11, 2026. https://etfiq.com/funds/ibb Free to use with attribution; the underlying files are at Open data.

ETFIQ covers leveraged and inverse, thematic, buffer, option-income, core index and spot crypto ETFs. This fund is here because the other funds here are measured against it and portfolios hold it. ETFIQ is an independent publisher and makes no recommendations. Standards and sources