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Friday, October 2, 2026The Morning Brief →Sign in
XBISPDRINDEX

SPDR S&P Biotech ETF

$154.51-2.01% vs prior close
10117052-WK

Price through Sep 30 · Flows through Sep 29. Figures use the latest available records, not a live quote. Fund details retrieved Oct 2. Holdings snapshot retrieved Oct 2.

In seeking to track the performance of the S&P Biotechnology Select Industry Index (the "index"), the fund employs a sampling strategy. It generally invests substantially all, but at least 80%, of its total assets in the securities comprising the index. The index represents the biotechnology segment of the S&P Total Market Index ("S&P TMI").

Price & daily flows
154.9135.5116.0154.51DAILY NET FLOWOct 1Jan 30Jun 1Oct 1

SOURCE: MARKET TAPE & DAILY CREATION/REDEMPTION RECORDS · 1Y SHOWN · NET +$1.1B OVER THIS RANGE

The desk’s read

Money is leaving — −$690M in net outflows over the past month, about 6.7% of the fund's asset base, while the price has returned +26.7% so far this year. At 0.35% a year it is not the cheapest way in — AVIE has a reported fee of 0.25%.

COMPOSED FROM THE FUND’S OWN DAILY RECORDS · UPDATED WITH EACH REFRESH

$10.4Bassets under management
0.35%expense ratio · $35 per $10,000 a year
−$690Mnet flow, trailing month
8.6Mavg daily volume, 30 days
135holdings · US-domiciled
2006listed January 30, 2006 · beta 1.04
The book at a glance
MRNA-1.9%TWST-2.7%IOVAGRAL-5.4%NTRA-1.2%HALO-3.1%KOD+3.9%RVMD+0.3%KYMR-1.5%PTGX-1.2%ORKA+0.2%ROIV-2.9%SMMT-1.3%CGON-3.6%PCVX-1.5%REGN-3.1%TVTX-3.4%GILD-1.0%AMGN-3.4%SYRE+1.0%PRAX-1.5%INSM-4.9%RLAY+2.4%IBRX-1.7%VRTX-3.1%DNTH+0.3%ABBV-0.6%TGTX-3.9%BIIB-1.4%CRSP+0.2%INCY-3.5%EXEL-0.8%VKTX-6.4%ERAS-0.5%RYTM-1.9%MDGL-0.8%UTHR+5.4%SRRK-4.5%KRYS-2.2%BMRN-2.6%

CELL SIZE IS PORTFOLIO WEIGHT · COLOR IS THE CHANGE IN THE LATEST AVAILABLE SNAPSHOT · TOP 40 POSITIONS

HoldingsDownload CSV
#HoldingWeightPriceDay52-wk
1MRNAMODERNA1.41%$188.94-1.9%
2TWSTTWIST BIOSCIENCE1.40%$188.05-2.7%
3IOVAIOVANCE BIOTHERAPEUTICS0.56%$14.23-4.0%
4GRALGRAIL INC0.90%$132.56-5.4%
5NTRANATERA1.16%$408.47-1.2%
6HALOHALOZYME THERAPEUTICS1.03%$106.94-3.1%
7KODKODIAK SCIENCES0.54%$98.46+3.9%
8RVMDREVOLUTION MEDICINES1.20%$205.89+0.3%
9KYMRKYMERA THERAPEUTICS1.35%$110.12-1.5%
10PTGXPROTAGONIST THERAPEUTICS1.07%$139.19-1.2%
11ORKAOruka Therapeutics1.37%$83.42+0.2%
12ROIVROIVANT SCIENCES1.15%$35.50-2.9%
13SMMTSUMMIT THERAPEUTICS1.01%$16.69-1.3%
14CGONCG ONCOLOGY INC1.20%$68.35-3.6%
15PCVXVAXCYTE1.18%$56.05-1.5%

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Sector weights
Healthcare100%
Health Technology99.1%
Health Services0.86%
Other0.07%
PORTFOLIO COMPOSITION, LATEST DISCLOSURE
Country weights
United States97.18%
United Kingdom1.29%
Switzerland1.25%
Bermuda0.34%
Ireland0.27%
Netherlands0.23%
PORTFOLIO COMPOSITION, LATEST DISCLOSURE
Performance
1 week-0.3%
1 month-5.4%
3 months-1.3%
6 months+30.1%
YTD+26.7%
1 year+52.4%
3 years—

PRICE RETURN, DISTRIBUTIONS NOT REINVESTED

Net flows
1 week−$326M
1 month−$690M
3 months−$290M
YTD+$285M
1 year+$1.1B

CREATION/REDEMPTION DOLLARS, DAILY RECORDS

Monthly net flows
OctNovDecJanFebMarAprMayJunJulAugSep
DAILY CREATION/REDEMPTION RECORDS, TRAILING TWELVE MONTHS
The risk read
25%realized volatility, 30 days (annualized)
28%realized volatility, 1 year
-10.5%deepest fall from a peak, 1 year
-8.9%latest close versus that peak

The top holding is 1.5% of the book; the top ten carry 13%. Spread across 151+ names, it behaves like roughly 110 equally-weighted positions.

VOLATILITY & DRAWDOWN FROM THE DAILY TAPE · CONCENTRATION FROM THE LATEST DISCLOSED BOOK

Options tape
9Kcalls · latest snapshot
32Kputs · latest snapshot
3.42put/call ratio
11.2Mshares traded
Most-traded holdings, options premiumBullishBearish
MRNA MODERNA$35M$34M
KOD KODIAK SCIENCES$3M$11M
DYN DYNE THERAPEUTICS$8M$2M
NTRA NATERA$3M$6M
AMGN AMGEN$3M$4M

TODAY’S OPTIONS PREMIUM IN THE FUND’S UNDERLYING NAMES

The case against XBI

Due diligence cuts both ways. These funds sit on the same shelf and beat XBI on at least one dimension that matters — the fee, the asset base, or where the money is going.

FundFeeAssetsFlow, 1MThe case
SPDW State Street SPDR Portfolio Developed World ex-US ETF0.03%$41.5B+$286M-32bp on fee · 4× the assets · +$286M in over the monthHead-to-head
SPMD State Street SPDR Portfolio S&P 400 Mid Cap ETF0.03%$18.2B+$199M-32bp on fee · 2× the assets · +$199M in over the monthHead-to-head
IDEV iShares Core MSCI International Developed Markets ETF0.04%$32.9B+$497M-31bp on fee · 3× the assets · +$497M in over the monthHead-to-head
IGSB iShares 1-5 Year Investment Grade Corporate Bond ETF0.04%$23.7B+$575M-31bp on fee · 2× the assets · +$575M in over the monthHead-to-head
IGIB iShares 5-10 Year Investment Grade Corporate Bond ETF0.04%$18.6B+$412M-31bp on fee · 2× the assets · +$412M in over the monthHead-to-head
Sign in to save this to The RecordA timestamped copy for the file — documentation, not advice.
InstrumentsHarvest substitutesTrade cost at $1MClient tearsheetStress this fund
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