Which stocks do IBB and IWO both hold?

111 stocks are in both. The biggest shared positions: KRYS (0.7% of IBB, 0.6% of IWO), PRAX (0.7% of IBB, 0.5% of IWO), PTGX (0.6% of IBB, 0.5% of IWO), ALKS (0.7% of IBB, 0.4% of IWO), SYRE (0.5% of IBB, 0.4% of IWO).

IBBvsIWO

iShares Biotechnology ETF or iShares Russell 2000 Growth ETF, side by side from their own SEC filings. 14% of their stock holdings are the same at the same weight, across 111 stocks in both. IWO costs 0.24% a year against 0.44% for IBB, $20 a year less on $10,000. Over the last twelve months IBB returned +50.6% and IWO +38.6%.

14%of the two portfolios is the same stocks at the same weight

IBB22% in stocks the other holds too

IWO14% in stocks the other holds too

stocks in bothstocks only in that fundbonds, cash and unmatched shares

The two funds

From each fund's latest N-PORT filing and its prospectus.

IBBIWOYearly cost0.44%0.24%Net assets$9.1B$15.4BPositions2521,137Last 12 months+50.6%+38.6%3 years, a year+14.7%+18.3%5 years, a year+3.3%+5.5%Largest holdingBlackRock 12.0%BlackRock 14.8%Main sectorHealthcare 97%Healthcare 27%Holdings as ofJun 30, 2026Jun 30, 2026

Returns are total returns with dividends reinvested, from the funds’ own monthly figures; “(price)” marks a fund whose filing record is younger than a year, whose twelve months are its price change. The stronger figure in each row is set in bold. Past returns say what happened, not what will.

Growth of $100

Both funds from July 2019, the first month both report, dividends reinvested.

IBB$177IWO$204

July 2019June 2026

What they both hold

111 stocks are in both funds: 22% of IBB and 14% of IWO. The biggest shared positions:

Stockin IBBin IWO

KRYSKrystal Biotech, Inc.0.7%0.6%PRAXPraxis Precision Medicines, Inc.0.7%0.5%PTGXProtagonist Therapeutics, Inc.0.6%0.5%ALKSAlkermes plc0.7%0.4%SYRESpyre Therapeutics, Inc.0.5%0.4%COGTCogent Biosciences, Inc.0.4%0.4%TWSTTwist Bioscience Corporation0.5%0.4%RYTMRhythm Pharmaceuticals, Inc.0.6%0.4%DFTXDefinium Therapeutics, Inc.0.4%0.4%KYMRKymera Therapeutics, Inc.0.6%0.4%

Only in IBB

Its biggest stocks the other fund does not hold.

Only in IWO

Its biggest stocks the other fund does not hold.

More comparisons

IBB vs XBI IBB vs VHT IBB vs VBK IBB vs XLV IWM vs IWO IWO vs VTWO IWO vs SPSM IJR vs IWO

From each fund’s Form N-PORT (IBB: June 2026, IWO: June 2026) and prospectus, via the SEC’s public data sets. Overlap counts only the stocks we can match to a listing: stock by stock, the smaller of the two weights, added up.