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IBB

GradeANASDAQ Global Market

iShares Biotechnology ETF

Themes · IShares · Inception 2001-02-04 · SEC filings

$206.16−4.65 (−2.21%)

As of Sep 23, 2026, 2:20 PM EDT

Intraday session: down, 59 prints from 210.81 to 206.16. Range 205.84 to 211.31. Use the arrow keys to read each point.$208.00$210.0010 AM12 PM2 PM4 PM
Expense ratio
0.44%
Fund size
$10.5B
1Y return
+47.3%
Yield · Last 12 months
0.16%
Holdings
244
Volume · 30D
1.6M sh
NAV per share
$207.21
52W range
low $138.79high $217.12

The ETF.net IBB Grade

A

74/ 100

Rank 3 of 17 in Biotech & Genomics

Confidence High

Six-pillar profile for IBB. Scores out of 100: Cost 69, Risk 59, Mission 83, Tradability 96, Holdings 50, Durability 89. Strongest: Tradability (96). Weakest: Holdings (50). Leans toward Tradability.
F< 25
D≥ 25
C≥ 40
B≥ 55
A≥ 70

Score 74 of 100 sits in the A band. Bands: A ≥ 70, B ≥ 55, C ≥ 40, D ≥ 25, F < 25; the scale skips E.

  • Cost

    What you pay to own it — the expense ratio plus trading frictions, ranked within its category.
    BScore 69
    Category rank6/17 · top 35%
  • Mission

    How faithfully it does the job it claims — tracking its mandate or index with minimal slippage.
    AScore 83
    Category rank6/9 · mid-pack
  • Risk

    How violently it can move — volatility, drawdown depth, and downside capture versus its category.
    BScore 59
    Category rank9/17 · mid-pack
  • Tradability

    How cheaply and easily you can get in and out — liquidity, spread, and premium/discount stability.
    AScore 96
    Category rank1/17 · top 6%
  • Holdings

    What it actually owns — the quality, breadth, and concentration of the underlying portfolio.
    CScore 50
    Category rank11/17 · mid-pack
  • Durability

    Whether it will still be here — the fund’s assets, age, flows, and issuer staying power.
    AScore 89
    Category rank1/17 · top 6%

Graded as of Sep 22, 2026

Our read on IBB

ETF.net Research

ABiotech's original index fund. Since 2001 IBB has packed the whole US biotech sector, roughly 250 names, into one line item for 0.44% a year, below what the typical biotech fund charges.

Stated mandate

The Fund seeks to track an index composed of U.S.-listed equities focused on the biotechnology sector.

Why people hold it

  1. 01A 2001 launch makes it one of the sector's originals, and it has grown into a multi-billion-dollar fund that trades actively.
  2. 02Roughly 250 stocks, so the whole US biotech bench comes along instead of a few marquee drugmakers.
  3. 030.44% a year, set by the prospectus and below the median fee in its biotech peer group.
  4. 04Sticks closely to the job in its prospectus: US-listed biotech equities, nothing exotic bolted on. That lands it in the upper half of its peer group.ishares.com

Worth knowing

  1. 01Cheaper seats exist in the same aisle: IBBQ at 0.19%, BBP at 0.34%, XBI at 0.35%.
  2. 02One industry carries the whole fund. Trial readouts, FDA decisions and patent expiries drive it, with no other sector to cushion a rough patch.
  3. 03Distributions arrive quarterly, but biotech is a growth sector and payouts are a side effect, not the point.

IBB Holdings

As of Sep 22, 2026, 3:23 AM
Asset class
Stocks
Holdings
244
Top-10 weight
48%
Largest holding
GILD8.4%

Sectors

  • Health Care100.0%

Geography

  • United States86.01%
  • Netherlands4.20%
  • Switzerland2.44%
  • Denmark2.40%
  • United Kingdom1.92%
  • Ireland0.65%
  • Germany0.64%
  • Canada0.62%
  • Other countries (7)1.10%
The fund’s holdings, weight-ordered — page 1 of 17.
#TickerCompanyWeight %SharesMarket valueIn ETFs
001GILDGILEAD SCIENCES8.37%5,810,150$872M482
002VRTXVERTEX PHARMACEUTICALS7.61%1,560,823$793M417
003AMGNAMGEN INC7.31%1,976,674$762M470
004REGNREGENERON PHARMACEUTICALS5.61%745,337$585M401
005MRNAMODERNA4.06%2,747,442$423M240
006ARGXARGENX SE ADR3.97%417,981$414M68
007NTRANATERA3.59%1,012,519$374M223
008RVMDREVOLUTION MEDICINES2.66%1,449,903$277M169
009ILMNILLUMINA INC2.60%1,132,627$271M305
010ALNYALNYLAM PHARMACEUTICALS2.31%1,003,156$240M258
011BIIBBIOGEN2.28%1,102,940$238M331
012ONCBEONE MEDICINES AG2.13%632,735$222M35
013INSMINSMED1.86%1,617,880$194M183
014INCYINCYTE CORP1.82%1,511,277$189M364
015ROIVROIVANT SCIENCES LTD1.50%3,942,104$157M168

Showing 1–15 of 244 holdings

IBB Performance

Shows how $10,000 changes over the selected period, with cash distributions reinvested at the closing price on each ex-dividend date.

IBB$14,729
SPY tracks large US stocks. It provides market context, rather than representing this fund’s strategy, asset class or investment benchmark.$11,723
Sep 22, 2025 to Sep 22, 2026. IBB $14,729. SPY $11,723. Use the arrow keys to read each point.$9,081$12,345$15,608Sep 2025Mar 2026Sep 2026

Sep 22, 2025 – Sep 22, 2026

Returns run to the Sep 22, 2026 close, with cash distributions reinvested. Each period starts on the same date that many months or years earlier. Periods over one year show the average yearly return.

Trailing total return for IBB. Periods over one year show the average yearly return.
PeriodIBB
Year to date+25.0%
1 month−1.3%
3 months+19.1%
1 year+47.3%
3 years+20.2%per year
5 years+4.5%per year
10 years+8.0%per year

As of the close, with distributions reinvested.

Calendar-year total return with cash distributions hypothetically reinvested at the ex-dividend date’s closing price. The current year shows year to date.

Annual total returns for IBB
YearReturn barIBB
2026 YTD+25.0%
2025+28.0%
2024−2.4%
2023+3.8%
2022−13.7%
2021+1.0%
2020+26.0%

IBB in the news

IBB Dividends

Adds up every distribution paid per share over the last 12 months, divided by the last completed close. Distributions are counted by ex-date. Data through Sep 22, 2026.
0.16%Last 12 months
Payout per share
$0.34Last 12 months
Last payment
$0.01 per share
Paid on
Shares bought on or after this date do not qualify for this distribution.
Frequency
Quarterly

Distribution history

2017–2026

One bar per payment. 36 payments from 2017 to 2026 YTD. Mar 24, 2017 $0.10; Jun 27, 2017 $0.06; Sep 26, 2017 $0.04; Dec 21, 2017 $0.13; Jun 26, 2018 $0.16; Sep 26, 2018 $0.03; Mar 20, 2019 $0.13; Jun 17, 2019 $0.08; Sep 24, 2019 $0.07; Dec 16, 2019 $0.06; Dec 30, 2019 $0.06; Mar 25, 2020 $0.06; Jun 15, 2020 $0.13; Sep 23, 2020 $0.06; Dec 14, 2020 $0.07; Mar 25, 2021 $0.13; Jun 10, 2021 $0.02; Sep 24, 2021 $0.12; Dec 13, 2021 $0.04; Mar 24, 2022 $0.12; Jun 9, 2022 $0.03; Sep 26, 2022 $0.16; Dec 13, 2022 $0.10; Mar 23, 2023 $0.06; Jun 7, 2023 $0.0062; Sep 26, 2023 $0.15; Dec 20, 2023 $0.12; Mar 21, 2024 $0.13; Sep 25, 2024 $0.20; Dec 17, 2024 $0.06; Mar 18, 2025 $0.12; Sep 16, 2025 $0.08; Dec 16, 2025 $0.18; Mar 17, 2026 $0.12; Jun 15, 2026 $0.02; Sep 15, 2026 $0.01. Use the arrow keys to read each point.2017201820192020202120222023202420252026YTD
Ex-datePay dateAmount per share
Sep 15, 2026Sep 18, 2026$0.01
Jun 15, 2026Jun 18, 2026$0.02
Mar 17, 2026Mar 20, 2026$0.12
Dec 16, 2025Dec 19, 2025$0.18
Sep 16, 2025Sep 19, 2025$0.08
Mar 18, 2025Mar 21, 2025$0.12
Dec 17, 2024Dec 20, 2024$0.06
Sep 25, 2024Sep 30, 2024$0.20
Mar 21, 2024Mar 27, 2024$0.13
Dec 20, 2023Dec 27, 2023$0.12
Sep 26, 2023Oct 2, 2023$0.15
Jun 7, 2023Jun 13, 2023$0.0062

IBB Risk

How much the fund’s monthly returns vary, scaled to a year.
19.0%
Annualised · 36 months to Aug 2026
How it’s calculated: standard deviation

The sample standard deviation of monthly total returns, multiplied by the square root of 12.

Uses up to 36 complete months, with at least 12 required. Total returns include reinvested distributions.

Return above 3-month US Treasury bills per unit of volatility.
0.72
vs 3-month T-bills · to Aug 2026
How it’s calculated: Sharpe ratio

Subtract each month’s Treasury-bill return from the fund’s monthly total return.

Divide the average of those excess returns by their sample standard deviation, then multiply by the square root of 12.

Uses up to 36 complete months, with at least 12 required. Each month uses the Treasury yield quoted at the end of the previous month.

The largest fall from a peak to the low that followed.
−39.0%
Trough Jun 2022
How it’s calculated: maximum drawdown

The largest percentage decline from an earlier peak, using total returns with reinvested distributions.

Uses up to five years through the last close, with at least 12 months required.

How strongly the fund’s returns move with its asset-class index.
0.71
vs its asset-class index
How it’s calculated: beta

The beta figure is supplied by FMP. The comparison index depends on the fund’s broad asset class.

IBB Cost

Expense ratio0.44%
  • The middle half of Biotech & Genomics funds
  • Median 0.47%

4 of the 15 Biotech & Genomics funds charge less.

IBB costs $44.00 a year on $10,000. The median Biotech & Genomics fund costs $47.00.