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Free · no sign-up · Q2 2026

Which funds own XBI

SPDR Series SP Biot in the Q2 2026 filings. At least 3 of the 91 current managers on file reported a position, worth $317m between them. It is among the largest positions of fewer than a fifth of the current managers on file. Buying and selling roughly cancelled this quarter, which is what a name looks like when the argument is still live.

Managers holding
3
at least, of 91 current
Combined value
$317m
as reported
Opened
3
new this quarter
Added to
0
already held
Trimmed or sold out
2
2 sold out entirely

Only each manager’s largest 200 positions are listed here, so a smaller holder may be missing.

Managers reporting a position

Largest first. Weight is the share of that manager’s whole reported book, which is the number worth quoting: $400m is a rounding error in one book and a defining bet in another.

ManagerValueWeightSharesChange on the quarterAction
Two Sigma Investments LP
Quantitative · $138bn book
$237m0.2%1,497,968opened1,497,968New
Tudor Investment Corp
Macro · $71.9bn book
$79m0.1%502,000opened502,000New
ARK Investment Management LLC
Long-only · $15.4bn book
$00.0%94opened94New

Sold out of this quarter

Valued at what the position was worth in the previous filing, because by this one it is gone.

Ownership through time

At least 5 of the 95 managers whose filings are on file listed XBI in Q2 2026, against 2 in Q2 2013. 3 managers more than in Q1 2026: 5 started positions; 2 no longer listed it among the positions read, which can mean a holding below the listed range, a filing that reported no holdings, or a filing not yet made.

Each manager’s largest 500 positions a quarter are read, so a small holding in a very large book can be missing, and a manager is counted as leaving only where its own filing shows it.

Managers on file listing it
0510Q2 2013: 2Q3 2013: 2Q4 2013: 1Q2 2014: 1Q1 2015: 215Q2 2015: 2Q3 2015: 2Q1 2016: 216Q2 2016: 3Q3 2016: 2Q4 2016: 3Q1 2017: 217Q2 2017: 1Q4 2017: 4Q1 2018: 318Q2 2018: 1Q3 2018: 1Q4 2018: 1Q1 2019: 119Q2 2019: 3Q3 2019: 3Q4 2019: 4Q1 2020: 420Q2 2020: 2Q3 2020: 2Q4 2020: 5Q1 2021: 321Q2 2021: 2Q3 2021: 2Q4 2021: 4Q1 2022: 622Q2 2022: 1Q3 2022: 6Q4 2022: 7Q1 2023: 1023Q2 2023: 6Q3 2023: 8Q4 2023: 7Q1 2024: 824Q2 2024: 8Q3 2024: 8Q4 2024: 5Q1 2025: 625Q2 2025: 5Q3 2025: 2Q4 2025: 6Q1 2026: 226Q2 2026: 5
  • Q2 2013: 2
  • Q3 2013: 2
  • Q4 2013: 1
  • Q2 2014: 1
  • Q1 2015: 2
  • Q2 2015: 2
  • Q3 2015: 2
  • Q1 2016: 2
  • Q2 2016: 3
  • Q3 2016: 2
  • Q4 2016: 3
  • Q1 2017: 2
  • Q2 2017: 1
  • Q4 2017: 4
  • Q1 2018: 3
  • Q2 2018: 1
  • Q3 2018: 1
  • Q4 2018: 1
  • Q1 2019: 1
  • Q2 2019: 3
  • Q3 2019: 3
  • Q4 2019: 4
  • Q1 2020: 4
  • Q2 2020: 2
  • Q3 2020: 2
  • Q4 2020: 5
  • Q1 2021: 3
  • Q2 2021: 2
  • Q3 2021: 2
  • Q4 2021: 4
  • Q1 2022: 6
  • Q2 2022: 1
  • Q3 2022: 6
  • Q4 2022: 7
  • Q1 2023: 10
  • Q2 2023: 6
  • Q3 2023: 8
  • Q4 2023: 7
  • Q1 2024: 8
  • Q2 2024: 8
  • Q3 2024: 8
  • Q4 2024: 5
  • Q1 2025: 6
  • Q2 2025: 5
  • Q3 2025: 2
  • Q4 2025: 6
  • Q1 2026: 2
  • Q2 2026: 5
Their combined reported value
$0$294m$588mQ2 2013: $5.4mQ3 2013: $4.3mQ4 2013: $4.4mQ2 2014: $3.0mQ1 2015: $8.0m15Q2 2015: $100mQ3 2015: $21mQ1 2016: $22m16Q2 2016: $20mQ3 2016: $110mQ4 2016: $26mQ1 2017: $26m17Q2 2017: $25mQ4 2017: $135mQ1 2018: $119m18Q2 2018: $116mQ3 2018: $79mQ4 2018: $46mQ1 2019: $27m19Q2 2019: $220mQ3 2019: $150mQ4 2019: $196mQ1 2020: $254m20Q2 2020: $11mQ3 2020: $30mQ4 2020: $374mQ1 2021: $116m21Q2 2021: $26mQ3 2021: $133mQ4 2021: $492mQ1 2022: $141m22Q2 2022: $7.3mQ3 2022: $268mQ4 2022: $588mQ1 2023: $509m23Q2 2023: $229mQ3 2023: $204mQ4 2023: $392mQ1 2024: $392m24Q2 2024: $273mQ3 2024: $272mQ4 2024: $184mQ1 2025: $246m25Q2 2025: $173mQ3 2025: $43mQ4 2025: $356mQ1 2026: $178m26Q2 2026: $330m
  • Q2 2013: $5.4m
  • Q3 2013: $4.3m
  • Q4 2013: $4.4m
  • Q2 2014: $3.0m
  • Q1 2015: $8.0m
  • Q2 2015: $100m
  • Q3 2015: $21m
  • Q1 2016: $22m
  • Q2 2016: $20m
  • Q3 2016: $110m
  • Q4 2016: $26m
  • Q1 2017: $26m
  • Q2 2017: $25m
  • Q4 2017: $135m
  • Q1 2018: $119m
  • Q2 2018: $116m
  • Q3 2018: $79m
  • Q4 2018: $46m
  • Q1 2019: $27m
  • Q2 2019: $220m
  • Q3 2019: $150m
  • Q4 2019: $196m
  • Q1 2020: $254m
  • Q2 2020: $11m
  • Q3 2020: $30m
  • Q4 2020: $374m
  • Q1 2021: $116m
  • Q2 2021: $26m
  • Q3 2021: $133m
  • Q4 2021: $492m
  • Q1 2022: $141m
  • Q2 2022: $7.3m
  • Q3 2022: $268m
  • Q4 2022: $588m
  • Q1 2023: $509m
  • Q2 2023: $229m
  • Q3 2023: $204m
  • Q4 2023: $392m
  • Q1 2024: $392m
  • Q2 2024: $273m
  • Q3 2024: $272m
  • Q4 2024: $184m
  • Q1 2025: $246m
  • Q2 2025: $173m
  • Q3 2025: $43m
  • Q4 2025: $356m
  • Q1 2026: $178m
  • Q2 2026: $330m

Between the quarter ends of Q1 2026 and Q2 2026. Each change in shares is valued at the Q2 2026 price, so the price’s own move is left out; a 13F shows the two quarter ends, not when in between anything was bought or sold.

Largest increases, by shares

Largest decreases, by shares

No manager on file sold part of it.

Left it

No manager on file is shown leaving it.

ManagerValue over timeFirst listedLargestQ2 2026
Two Sigma Investments LPQ2 2019$237m$237m
Tudor Investment CorpQ4 2016$79m$79m
Verition Fund Management LLCQ2 2013$11m$7.1m
Freestone Grove Partners LPQ2 2026$6.3m$6.3m
ARK Investment Management LLCQ2 2026$15k$15k
Susquehanna International Group LLPQ2 2015$284mlast listed Q4 2020
Jane Street Group LLCQ2 2014$281mlast listed Q2 2025
Moore Capital Management LPQ4 2016$264mlast listed Q4 2025
Citadel Advisors LLCQ1 2024$183mlast listed Q1 2024
D. E. Shaw & Co.Q3 2022$175mlast listed Q1 2026
Two Sigma Advisers LPQ1 2019$133mlast listed Q3 2024
AllianceBernstein LPQ4 2017$116mlast listed Q3 2018
Discovery Capital Management LLCQ3 2016$99mlast listed Q3 2016
Millennium Management LLCQ1 2016$90mlast listed Q4 2023
Squarepoint Ops LLCQ4 2019$78mlast listed Q2 2025

Reported as options rather than shares

A put or a call on a name is not a position in it, and the filing states the notional rather than what the option cost. These lines are listed apart for that reason and are not counted in anything above.

What is inside it

Knowing who bought a fund is half the question. The other half is what the fund holds, which is the manager’s actual exposure rather than the wrapper they reached for.

What XBI holds

How much of the picture this is

A Form 13F reports US-listed long equity and nothing else: no shorts, no bonds, no cash and no non-US listings. It arrives forty-five days after the quarter ends, so a manager who sold in July still shows the position in a filing published in August. This page reads the managers on file here rather than every filer in the market, and each manager’s largest positions rather than the whole table, so a small position in a very large book may not appear. Say “their last filing showed” rather than “they own”, and the distinction will do you credit.

What to do with a name the funds are buying

Knowing who owns something is the start of a pitch, not the pitch. The next questions are what it is worth and why they were buying.

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The holdings, every quarter, and the week between

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