- Quarter end
- 31 Dec 2025
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 10 Feb 2026
- Managers listing it
- 15
- at least, of 95 tracked, among listed positions
- Comparable managers
- 92
- filed both Q3 2025 and Q4 2025; 1 listed it in both
- Shares listed
- 3,676,318
- combined, among listed positions
- Reported value
- $448m
- combined, at the quarter end
Among the 92 comparable managers: 8 buyers (opened or added shares) and 10 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,387,115.
Managers listing XBI in Q4 2025
15 of 15 holders
Largest increases and reductions, by shares
Increases
- Two Sigma Investments LPexisting position · 1,762,600 shares now+1,754,300
- D. E. Shaw & Co.new position · 737,777 shares now+737,777
- Rokos Capital Management LLPnew position · 81,960 shares now+81,960
- Renaissance Technologies LLCnew position · 41,100 shares now+41,100
- Quantbot Technologies LPnew position · 33,000 shares now+33,000
Reductions
- Susquehanna International Group LLPexisting position · 367,910 shares now-785,927
- Millennium Management LLCexisting position · 9,370 shares now-65,355
- Balyasny Asset Management LLCexisting position · 53,091 shares now-50,384
- Moore Capital Management LPexisting position · 225,000 shares now-25,000
- Neuberger Berman Group LLCexisting position · 243,257 shares now-4,539
New positions and exits
New (5)
Exited (4)
- Schonfeld Strategic Advisors LLCwas $18m
- Squarepoint Ops LLCwas $9.8m
- Marshall Wace LLPwas $3.4m
- Man Group PLCwas $3.3m
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 →