Which hedge funds own ALXN? ALEXION PHARMACEUTICALS INC, Q2 2026 13F holders
0 tracked hedge funds disclosed a position in ALXN (ALEXION PHARMACEUTICALS INC) in their Q2 2026 13F filings, worth $0 in total.
- 0
- Holders
- 0
- New this quarter
- 0
- Exited this quarter
- $0
- Combined value
- –
- Share of managers holding
Holders, Q2 2026
Ownership over time
By quarter
| Quarter | Holders | Managers filing | Share holding | Combined value |
|---|---|---|---|---|
| Q3 2021 | 0 | 71 | 0.0% | $0 |
| Q2 2021 | 10 | 71 | 14.1% | $3.4bn |
| Q1 2021 | 9 | 70 | 12.9% | $2.4bn |
| Q4 2020 | 8 | 71 | 11.3% | $1.6bn |
| Q3 2020 | 5 | 68 | 7.4% | $764m |
| Q2 2020 | 6 | 68 | 8.8% | $725m |
| Q1 2020 | 8 | 68 | 11.8% | $504m |
| Q4 2019 | 4 | 67 | 6.0% | $460m |
| Q3 2019 | 5 | 60 | 8.3% | $378m |
| Q2 2019 | 4 | 60 | 6.7% | $233m |
| Q1 2019 | 2 | 60 | 3.3% | $111m |
| Q4 2018 | 4 | 60 | 6.7% | $142m |
| Q3 2018 | 4 | 59 | 6.8% | $132m |
| Q2 2018 | 3 | 59 | 5.1% | $61.2m |
| Q1 2018 | 3 | 59 | 5.1% | $12.0m |
| Q4 2017 | 5 | 59 | 8.5% | $56.6m |
| Q3 2017 | 8 | 56 | 14.3% | $377m |
| Q2 2017 | 6 | 56 | 10.7% | $313m |
| Q1 2017 | 6 | 56 | 10.7% | $234m |
| Q4 2016 | 6 | 56 | 10.7% | $262m |
| Q3 2016 | 4 | 52 | 7.7% | $195m |
| Q2 2016 | 4 | 52 | 7.7% | $155m |
| Q1 2016 | 2 | 52 | 3.8% | $71.9m |
| Q4 2015 | 2 | 52 | 3.8% | $87.7m |
| Q3 2015 | 2 | 52 | 3.8% | $221m |
| Q2 2015 | 5 | 52 | 9.6% | $164m |
| Q1 2015 | 5 | 52 | 9.6% | $179m |
| Q4 2014 | 5 | 52 | 9.6% | $239m |
| Q3 2014 | 4 | 49 | 8.2% | $562m |
| Q2 2014 | 6 | 49 | 12.2% | $511m |
| Q1 2014 | 4 | 47 | 8.5% | $430m |
| Q4 2013 | 2 | 47 | 4.3% | $497m |
| Q3 2013 | 2 | 45 | 4.4% | $486m |
| Q2 2013 | 3 | 43 | 7.0% | $569m |
| Q1 2013 | 2 | 39 | 5.1% | $872m |
| Q4 2012 | 3 | 40 | 7.5% | $379m |
| Q3 2012 | 0 | 37 | 0.0% | $0 |
| Q2 2012 | 1 | 37 | 2.7% | $427k |
| Q1 2012 | 3 | 37 | 8.1% | $11.9m |
| Q4 2011 | 3 | 37 | 8.1% | $254m |
| Q3 2011 | 2 | 33 | 6.1% | $51.2m |
| Q2 2011 | 1 | 33 | 3.0% | $729k |
| Q1 2011 | 2 | 32 | 6.3% | $10.4m |
| Q4 2010 | 3 | 31 | 9.7% | $9.0m |
| Q3 2010 | 4 | 26 | 15.4% | $33.2m |
| Q2 2010 | 2 | 25 | 8.0% | $10.7m |
| Q1 2010 | 2 | 28 | 7.1% | $19.6m |
| Q4 2009 | 1 | 27 | 3.7% | $6.9m |
| Q2 2009 | 1 | 26 | 3.8% | $7.0m |
| Q2 2007 | 0 | 21 | 0.0% | $0 |
| Q1 2007 | 1 | 21 | 4.8% | $17.3m |
| Q2 2006 | 0 | 20 | 0.0% | $0 |
| Q1 2006 | 1 | 19 | 5.3% | $9.3m |
| Q4 2005 | 1 | 18 | 5.6% | $4.6m |
| Q3 2005 | 1 | 16 | 6.3% | $42.5m |
| Q4 2004 | 0 | 18 | 0.0% | $0 |
| Q3 2004 | 1 | 14 | 7.1% | $7.8m |
| Q1 2004 | 0 | 14 | 0.0% | $0 |
| Q4 2003 | 1 | 13 | 7.7% | $33.5m |
| Q3 2003 | 1 | 12 | 8.3% | $34.3m |
Who discovered ALXN first?
Earliest meaningful positions among the 21 tracked managers seen opening ALXN since Q3 2003.
| Viking Global Investors LP high conviction | Q3 2003 | 2.2% | Exited by Q3 2015 | – |
| RA Capital Management, L.P. high conviction | Q2 2009 | 6.6% | Exited by Q2 2011 | – |
| Alkeon Capital Management LLC | Q2 2013 | 1.3% | Exited by Q4 2017 | +1.4% |
| Sachem Head Capital Management LP | Q4 2016 | 4.4% | Exited by Q2 2017 | −0.9% |
| Senator Investment Group LP | Q2 2016 | 0.6% | Exited by Q4 2017 | +20% |
| Third Point LLC | Q1 2007 | 0.6% | Exited by Q4 2017 | – |
| Avidity Partners Management LP | Q1 2020 | 2.1% | Exited by Q3 2020 | +25% |
| Pentwater Capital Management LP high conviction | Q4 2016 | 0.02% | Exited by Q3 2021 | +350% |
Stock since is the split-adjusted change in the quarter-end price, excluding dividends, from the first reported quarter: the price the 13F filings themselves imply (value ÷ shares), blank across any gap that cannot be accounted for. It describes the stock, not the return any manager earned.
3 already held it when coverage began
Point72 Asset Management, L.P. (Q2 2014), Holocene Advisors, LP (Q4 2017), Woodline Partners LP (Q4 2019)