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Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.

ETFIQetfiq.com · independent ETF data

IJR vs XBI: how they differ

IJR and XBI hold 3% of their weight in the same names, and XBI returned more over the year.

iShares Core S&P Small-Cap ETF and State Street(R) SPDR(R) S&P(R) Biotech ETF.

What they hold in common

By the books each fund has filed, IJR and XBI hold 3% of their money in the same securities at the same weight.

Positions IJR and XBI both hold, largest shared weight first
HoldingIJRXBI
KRYSTAL BIOTECH INC0.54%1.10%
PROTAGONIST THERAPEUTICS INC0.41%1.08%
TG THERAPEUTICS INC0.40%1.09%
PTC THERAPEUTICS INC0.38%1.03%
VERACYTE INC0.26%0.82%
CATALYST PHARMACEUTICALS INC0.20%0.88%
ACADIA PHARMACEUTICALS INC0.18%0.94%
ARCUS BIOSCIENCES INC0.15%0.74%
VERICEL CORP0.13%0.50%
ADMA BIOLOGICS INC0.11%0.61%
SAREPTA THERAPEUTICS INC0.10%0.75%
VIR BIOTECHNOLOGY INC0.07%0.47%
Largest positions each one holds and the other does not
Only in IJROnly in XBI
FORMFACTOR INC 0.69%Apogee Therapeutics Inc 1.49%
VIASAT INC 0.68%Moderna Inc 1.41%
MOLINA HEALTHCARE INC 0.66%Twist Bioscience Corp 1.41%
ARGAN INC 0.62%Oruka Therapeutics Inc 1.38%
BRIGHTSPRING HEALTH SERVICES INC 0.61%Kymera Therapeutics Inc 1.36%
ELEMENT SOLUTIONS INC 0.61%Viking Therapeutics Inc 1.31%
MAXLINEAR INC 0.60%Praxis Precision Medicines Inc 1.29%
ESCO TECHNOLOGIES INC 0.50%Erasca Inc 1.27%

Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026.

IJR and XBI on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
IJR
iShares Core S&P Small-Cap ETF
XBI
State Street(R) SPDR(R) S&P(R) Biotech ETF
Where it sitsCore index fundCore index fund
IssueriSharesState Street
What it isS&P SmallCap 600SPDR S&P Biotech
Total return, 1 year+19.9%+64.0%
S&P 500 over the same days+17.5%+17.5%
Gap to the S&P 500+2.4 pts+46.5 pts
Expense ratio0.06%0.35%
Already in the S&P 5000.0%8.5%
Holdings603150

IJR in plain words

IJR is an index equity fund tracking the S&P SmallCap 600. Over the year to Sep 11, 2026 it returned +19.9% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.06% a year. By its holdings filed for Jun 30, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 603 positions, with the top ten at 6.0%. It sat 5.5% below its high of Aug 14, 2026 on Sep 11, 2026.

XBI in plain words

XBI is an index equity fund tracking the SPDR S&P Biotech. Over the year to Sep 11, 2026 it returned +64.0% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.35% a year. By its holdings filed for Jun 30, 2026, 8% of the fund by weight is stocks the S&P 500 also holds, across 150 positions, with the top ten at 13.3%. It sat 9.6% below its high of Feb 8, 2021 on Sep 11, 2026.

Questions people ask

Which returned more over the last year, IJR or XBI?
In the year to Sep 12, 2026, with distributions reinvested, IJR returned +19.9% and XBI returned +64.0%, so XBI returned more. One year is one year; the longer windows are in the table.
Which is cheaper, IJR or XBI?
IJR charges 0.06% a year and XBI charges 0.35%, so IJR is cheaper. Fees come from each fund's prospectus.
How much do IJR and XBI overlap with the S&P 500?
By their latest filed holdings, 0% of IJR and 8% of XBI by weight is stocks the S&P 500 already holds. Between the two funds, 3% of their books are the same securities at the same weight.

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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.

IJR against XBI, ETFIQ, data as of Sep 12, 2026. Every figure is arithmetic on a named public source; the method is at etfiq.com/methodology. A comparison is not a recommendation.

Cite this page. ETFIQ, IJR against XBI, data as of Sep 12, 2026. https://etfiq.com/compare/any/IJR-XBI Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources