IBB iShares Biotechnology ETF
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Over the year to Oct 28, 2026, IBB returned 37.5%.
Promise check: Not measuredIts theme exposure is measured once ETFIQ defines its theme company by company.
IBB risk and return scorecard
vs its own holdings
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records; risk-free rate: U.S. Treasury, Daily Treasury Bill Rates, 13-week coupon equivalent Method · Data
Money in and out
Net fund flows · Oct 23, 2026What you earned
What did you actually buy?
Biotech · holdings as of Oct 27, 2026More on IBB
Every number below is on this page. Open what you need.Price, 1 year
$216.35+2.0%1 day, priceClose, Oct 28, 2026
Price only. Total return over the same days, distributions reinvested, was +37.5%. Computed by ETFIQ from Tiingo daily prices.
Source: Tiingo end-of-day prices. Data as of Oct 28, 2026. Updated every trading night. Last checked Oct 19, 2026. Report a data error
| Window | Total return | S&P 500 (SPY) |
|---|---|---|
| 1M Sep 28 – Oct 28, 2026 | +2.7% | +0.9% |
| 3M Jul 29 – Oct 28, 2026 | +14.8% | +6.1% |
| 6M Apr 29 – Oct 28, 2026 | +30.8% | +9.1% |
| YTD Dec 31, 2025 – Oct 28, 2026 | +28.3% | +14.1% |
| 1Y Oct 28, 2025 – Oct 28, 2026 | +37.5% | +13.6% |
| 3Y Oct 27, 2023 – Oct 28, 2026 | +93.9% | +95.0% |
| 5Y Oct 29, 2021 – Oct 28, 2026 | +37.3% | +79.8% |
| 10Y Oct 28, 2016 – Oct 28, 2026 | +155.6% | +325.8% |
| Since launch Feb 12, 2001 – Oct 28, 2026 | +555.1% | +817.5% |
| Since launch, annualised Feb 12, 2001 – Oct 28, 2026 | +7.6% | – |
Total returns, distributions reinvested.
Source: Tiingo end-of-day prices, with distributions reinvested.
Money in and out
Daily data · as of Oct 23, 2026IBB: in the year to Oct 23, 2026, net $1.8bn came in; in the month to Oct 23, 2026, $199m came in.
Oct 21, 2026 to Oct 23, 2026
Sep 28, 2026 to Oct 23, 2026
Jul 28, 2026 to Oct 23, 2026
Jan 2, 2026 to Oct 23, 2026
Oct 28, 2025 to Oct 23, 2026
SEC filings, then daily counts
IBB, net flow each trading day over the 63 sessions from Jul 28, 2026 to Oct 23, 2026: money came in on 30 days and went out on 24 days.
Money in on 30 of the 63 trading days, out on 24.
IBB, net flow each trading day over the 249 sessions from Oct 28, 2025 to Oct 23, 2026: money came in on 121 days and went out on 107 days.
Money in on 121 of the 249 trading days, out on 107.
IBB, net flow each trading day over the 400 sessions from Mar 24, 2025 to Oct 23, 2026: money came in on 189 days and went out on 178 days.
Money in on 189 of the 400 trading days, out on 178.
Computed by ETFIQ from iShares’s daily data: each day’s change in shares outstanding times the previous day’s net asset value.
How this is computed
Percentages are of net assets at the start of each window. Numbers are net: money in less money out. Checked against the filing: The month’s daily sum and the filing’s B.6 number agree within rounding or, where the filing’s is larger, within rounding plus the fund’s creation and redemption fees. The full rule is in the fund’s flows file. Every day and month ETFIQ holds for IBB, back to Jul 2019, is in its flows file. Flows across every fund · How these flows are computed · Compare IBB with other funds in the flows tool
Every trading day, last 3 months63 days
Most recent first.
Week by week, last year52 weeks
Net flow into IBB each week, Oct 28, 2025 to Oct 23, 2026, most recent first, each week named by its last trading day with data. Computed by ETFIQ.
Month by month, money in and money outNov 2023 to Oct 2026
IBB, money in and money out each month from Nov 2023 to Sep 2026: two bars a month, money in above the line and money out below. Bars for Nov 2023 to Jun 2026 are from IBB’s SEC filings (N-PORT item B.6), and for Jul 2026 to Sep 2026 ETFIQ’s sums of its days. Oct 2026 is still in progress, so it is in the list and not drawn. Of the 36 months listed, money came in on net in 13 and went out in 23.
Bars for Nov 2023 to Jun 2026 are from IBB’s SEC filings (N-PORT item B.6), and for Jul 2026 to Sep 2026 ETFIQ’s sums of its days. Of the 36 months listed, money came in on net in 13 and went out in 23.
Most recent first.
How this is computed
N-PORT months: money in is sales plus reinvestments; money out is redemptions. Months summed from daily data: money in adds the days money came in; money out adds the days it went out.
N-PORT months are the filed sales plus reinvestments less redemptions. Later months add up the daily data; the Source column names any missing day.
Source: ETFIQ, from the fund’s daily share counts and net asset values, and its SEC N-PORT filings. Data as of Oct 23, 2026.
IBB key stats
Trading
as of Oct 27, 2026
IBB top ten by weight, 50.5% of the fund, of its 245 equity positions, from the holdings published by its issuer for Oct 27, 2026. Source: the issuer’s own daily file.
Source: iShares’s daily holdings file. Data as of Oct 27, 2026. Updated each trading day. Last checked Oct 28, 2026.
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About IBB
12 seats on IBB, as of Oct 28, 2026: 1 Supports, 1 Mixed, 6 Challenges, 4 Not enough data.
Questions people ask about IBB
- How much of IBB is in S&P 500 companies?
- By its holdings published by its issuer for Oct 27, 2026, 40% of IBB by weight is stocks the S&P 500 already holds. Its active share against the index is 99%, so that share is the part doing something different.
- What does IBB hold?
- 245 positions as published by its issuer for Oct 27, 2026, with the top ten at 50% of the fund. The largest are GILEAD SCIENCES at 8.6%, AMGEN INC at 8.2%, VERTEX PHARMACEUTICALS at 7.5%.
- Has IBB beaten the S&P 500?
- Over the year to Oct 28, 2026 IBB returned +37.5% with distributions reinvested, against +13.6% for the S&P 500, so it finished ahead of the index by 23.9 points.
- What does IBB cost?
- The prospectus expense ratio is 0.44% a year. Because 99% of the fund differs from the S&P 500, the fee on that differing part works out at 0.44%.
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ETFIQ, IBB, thematic ETFs, data as of Oct 28, 2026. https://etfiq.com/funds/ibb
ETFIQ. (Oct 28, 2026). IBB, thematic ETFs. Retrieved from https://etfiq.com/funds/ibb
[IBB, thematic ETFs (ETFIQ, Oct 28, 2026)](https://etfiq.com/funds/ibb)
The difference bar for IBB, redrawn every trading night.
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<figure style="margin:0;max-width:640px">
<a href="https://etfiq.com/funds/ibb"><img src="https://etfiq.com/assistant/api/embed/themes/ibb.svg" alt="IBB: 40% of IBB's weight is in S&P 500 companies and 60% is outside the index. Holdings as of Oct 27, 2026." width="640" style="max-width:100%;height:auto"></a>
<figcaption style="font:13px/1.5 sans-serif">IBB: 40% of IBB's weight is in S&P 500 companies and 60% is outside the index. Holdings as of Oct 27, 2026. Data: <a href="https://etfiq.com/funds/ibb">ETFIQ</a></figcaption>
</figure>The day's ETF flows, a comparison and one number. Every trading morning. About the Daily
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