- Quarter end
- 30 Jun 2026
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 3 Aug 2026
- Managers listing it
- 19
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q1 2026 and Q2 2026; 2 listed it in both
- Shares listed
- 3,909,711
- combined, among listed positions
- Reported value
- $619m
- combined, at the quarter end
Among the 91 comparable managers: 15 buyers (opened or added shares) and 5 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,664,172.
Managers listing XBI in Q2 2026
19 of 19 holders
Largest increases and reductions, by shares
Increases
- Two Sigma Investments LPexisting position · 1,497,968 shares now+1,156,799
- Tudor Investment Corpnew position · 502,000 shares now+502,000
- Citadel Advisors LLCnew position · 499,184 shares now+499,184
- Susquehanna International Group LLPexisting position · 391,754 shares now+317,565
- Wellington Management Group LLPnew position · 121,769 shares now+121,769
Reductions
- D. E. Shaw & Co.existing position · 328,794 shares now-1,038,998
- Brevan Howard Capital Management LPexisting position · 3,472 shares now-23,100
- Neuberger Berman Group LLCexisting position · 225,749 shares now-13,005
- Verition Fund Management LLCexisting position · 44,693 shares now-83
New positions and exits
New (7)
Exited (1)
- Hudson Bay Capital Management LPwas $33k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q2 2013 | 2 | $5.4m | n.a. | n.a. |
| Q3 2013 | 2 | $4.3m | n.a. | n.a. |
| Q4 2013 | 1 | $4.4m | n.a. | n.a. |
| Q2 2014 | 1 | $3.0m | n.a. | n.a. |
| Q1 2015 | 2 | $8.0m | n.a. | n.a. |
| Q2 2015 | 2 | $100m | n.a. | n.a. |
| Q3 2015 | 2 | $21m | n.a. | n.a. |
| Q1 2016 | 2 | $22m | n.a. | n.a. |
| Q2 2016 | 3 | $20m | n.a. | n.a. |
| Q3 2016 | 2 | $110m | n.a. | n.a. |
| Q4 2016 | 3 | $26m | n.a. | n.a. |
| Q1 2017 | 2 | $26m | n.a. | n.a. |
| Q2 2017 | 1 | $25m | n.a. | n.a. |
| Q4 2017 | 4 | $135m | n.a. | n.a. |
| Q1 2018 | 3 | $119m | n.a. | n.a. |
| Q2 2018 | 1 | $116m | n.a. | n.a. |
| Q3 2018 | 1 | $79m | n.a. | n.a. |
| Q4 2018 | 1 | $46m | n.a. | n.a. |
| Q1 2019 | 1 | $27m | n.a. | n.a. |
| Q2 2019 | 3 | $220m | n.a. | n.a. |
| Q3 2019 | 3 | $150m | n.a. | n.a. |
| Q4 2019 | 4 | $196m | n.a. | n.a. |
| Q1 2020 | 4 | $254m | n.a. | n.a. |
| Q2 2020 | 2 | $11m | n.a. | n.a. |
| Q3 2020 | 2 | $30m | n.a. | n.a. |
| Q4 2020 | 5 | $374m | n.a. | n.a. |
| Q1 2021 | 3 | $116m | n.a. | n.a. |
| Q2 2021 | 2 | $26m | n.a. | n.a. |
| Q3 2021 | 2 | $133m | n.a. | n.a. |
| Q4 2021 | 4 | $492m | n.a. | n.a. |
| Q1 2022 | 6 | $141m | n.a. | n.a. |
| Q2 2022 | 1 | $7.3m | n.a. | n.a. |
| Q3 2022 | 6 | $268m | n.a. | n.a. |
| Q4 2022 | 7 | $588m | n.a. | n.a. |
| Q1 2023 | 10 | $509m | n.a. | n.a. |
| Q2 2023 | 6 | $229m | n.a. | n.a. |
| Q3 2023 | 8 | $204m | n.a. | n.a. |
| Q4 2023 | 7 | $392m | 4 | 4 |
| Q1 2024 | 8 | $392m | 5 | 2 |
| Q2 2024 | 8 | $273m | 6 | 3 |
| Q3 2024 | 8 | $272m | 5 | 4 |
| Q4 2024 | 5 | $184m | 4 | 2 |
| Q1 2025 | 6 | $246m | 5 | 1 |
| Q2 2025 | 5 | $173m | 3 | 4 |
| Q3 2025 | 2 | $43m | 2 | 0 |
| Q4 2025 | 6 | $356m | 8 | 10 |
| Q1 2026 | 2 | $178m | 9 | 9 |
| Q2 2026 | 5 | $330m | 15 | 5 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own XBI, latest filings →Back to the 13F Explorer →